Abstract

The present disclosure relates to a copolyamide, and a preparation method therefor and the use thereof. The copolyamide has an adjustable melting point, hardness and other properties, and has photoluminescence and an improved molding processability. By modifying the adjustment of the main chain and side groups, the copolyamide can also exhibit additional functional benefits, such as antistatic, antibacterial, flame retardant and other properties. The method of the present disclosure is simple and efficient, and the selected comonomer can be derived from renewable biological resources, such that the dependence on petroleum resources is effectively reduced, thereby reducing production costs and improving the overall economic benefits.

IPC Classes  ?

• C08G 69/00 - Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
• C08G 69/14 - Lactams
• C08G 69/02 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
• C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
• C08G 69/36 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines, and polycarboxylic acids

Abstract

The present invention relates to the technical field of carbon materials. Disclosed are a mesophase pitch, and a production method and production system therefor. The method comprises: (1) performing a first thermal reaction on a hydrocarbon-containing raw material to obtain a first gas-phase stream and a first liquid-phase stream; and (2) carrying out a second thermal reaction on the first liquid-phase stream to obtain a second gas-phase stream and a second liquid-phase stream, wherein the content of anisotropic components in the first liquid-phase stream is not greater than 10%, and the average particle size of mesophase spheres in the anisotropic components is not greater than 20 μm. The method is simple to operate, and the obtained mesophase pitch has the characteristics of a moderate softening point, good spinnability, etc.

IPC Classes  ?

• C10C 3/02 - Working-up pitch, asphalt, bitumen by chemical means

Abstract

The present invention relates to the field of silver catalysts, and relates to an α-aluminum oxide carrier and a preparation method therefor, and a silver catalyst and a use thereof in preparation of ethylene oxide by ethylene epoxidation. The specific surface area of the α-aluminum oxide carrier is 0.3-4.0 m2/g, the water absorption rate is not lower than 25%, the mechanical strength is not lower than 40 N/particle, and the proportion of the volume of pores having a pore size of greater than or equal to 20 μm to the total pore volume is greater than 4%.

IPC Classes  ?

• B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof

Abstract

A testing device for measuring oil, gas and water contents in rock has a heating desorption unit that has a sample chamber for placing a rock sample to be detected, a crushing mechanism arranged within the sample chamber, and a heating mechanism. The heating desorption unit crushes and heats the rock sample in a sealed manner to achieve gas analysis and desorption analysis of oil and water contained therein, thus obtaining components to be detected. The device further has a cold trap collection unit in communication with the sample chamber, a light hydrocarbon capture unit in communication with the cold trap collection unit, a gas measuring unit in communication with the light hydrocarbon capture unit for measuring and calculating a gas volume; and a central control unit for controlling the testing device.

IPC Classes  ?

• G01N 33/24 - Earth materials

Abstract

Provided are a ZSM-5 molecular sieve, a preparation method, and a lightening method. The total specific surface area of the ZSM-5 molecular sieve is 300-500 m2/g, the external specific surface area of which accounts for 33-45% of the total specific surface area, and the ratio of the peak area of the peak at the chemical shift of 53 ppm in the nuclear magnetic spectrum of 27Al in the ZSM-5 molecular sieve to that of tetracoordinated Al is greater than or equal to 50%. The preparation method for the ZSM-5 molecular sieve comprises: S1, mixing a first silicon source, a first template agent, a first alkali source and water to obtain a seed gel, wherein the first silicon source is a solid silicon source; S2, mixing a second silicon source, an aluminum source, a second template agent, a second alkali source, water and the seed gel to obtain a synthetic liquid; and S3, crystallizing the synthetic liquid to obtain a ZSM-5 molecular sieve. Further provided are a ZSM-5 molecular sieve-based catalyst, a method for lightening light hydrocarbon and naphtha by using the ZSM-5 molecular sieve-based catalyst, and the use thereof. The ZSM-5 molecular sieve has a specific external specific surface area proportion, and the prepared catalyst can improve the yield of the cracking raw material under the conditions of a low hydrogen-oil volume ratio.

IPC Classes  ?

• C01B 39/40 - Type ZSM-5 using at least one organic template directing agent

Abstract

A continuous process for producing adamantane includes the steps of: 1) providing a liquid feed stream comprising endo-tetrahydrodicyclopentadiene; and 2) passing the liquid feed stream through a first reaction zone filled with a hydrogenation protective agent and a second reaction zone filled with an isomerization catalyst sequentially to carry out hydroisomerization reaction and obtain adamantane.

IPC Classes  ?

• C07C 5/29 - Rearrangement of carbon atoms in the hydrocarbon skeleton changing the number of carbon atoms in a ring while maintaining the number of rings

Abstract

A one-step transalkylation process that converts alkylphenols from low or medium temperature coal tar into both phenol and cresols is described. The process involves the separation of the coal tar into at least two fractions: a light cut fraction comprising compounds having a boiling point of 150°C to 250°C cut, and a heavy cut fraction comprising compounds having a boiling point above 250°C. The light cut fraction is used to produce phenolics via extraction. The alkylphenol stream also contains significant amounts of phenol and cresols. The phenol and cresols are separated from the alkylphenol stream prior to transalkylation to minimize yield loss, particularly for cresols. The alkylphenol stream can be purified before or after separation of the phenol and cresols from the alkylphenol stream.

IPC Classes  ?

• C07C 37/00 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
• C07C 37/48 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by exchange of hydrocarbon groups which may be substituted, from other compounds, e.g. transalkylation
• C07C 39/00 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
• C07C 39/04 - Phenol
• C07C 39/07 - Alkylated phenols containing only methyl groups as alkyl groups, e.g. cresols, xylenols

Abstract

A composite separator and a preparation method therefor, as well as a lithium-sulfur battery containing the composite separator are provided. The composite separator has a polymer substrate film and a composite layer disposed on the surface of the polymer substrate film. The composite layer includes a molecular sieve and a conductive carbon material. The molecular sieve contains cobalt and optionally lithium.

IPC Classes  ?

• H01M 50/451 - Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material
• H01M 10/052 - Li-accumulators
• H01M 50/403 - Manufacturing processes of separators, membranes or diaphragms
• H01M 50/417 - Polyolefins
• H01M 50/426 - Fluorocarbon polymers
• H01M 50/434 - Ceramics
• H01M 50/446 - Composite material consisting of a mixture of organic and inorganic materials
• H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties

Abstract

The present invention relates to the technical field of petroleum drilling. Disclosed are a plugging agent, and an oil-based drilling fluid and a use thereof. The plugging agent provided by the present invention has a multi-scale broad-spectrum strong plugging effect on formation micro-fractures, and the addition of the plugging agent into the oil-based drilling fluid can effectively solve the problem of wellbore instability and improve the safety of deep oil and gas exploration.

IPC Classes  ?

• C09K 8/502 - Oil-based compositions
• C09K 8/06 - Clay-free compositions

Abstract

Processes for removing residual impurities from a stream exiting a caustic extraction process are described. The impurities are removed using a sulfonic resin bed or an adsorbent bed containing acidic zeolites or cation exchanged zeolites. The resin technology and adsorbent technology can be used alone or in tandem to eliminate impurities. The impurities to be removed include, but are not limited to, nitrogen containing compounds, sulfur containing compounds, chloride containing compounds, other impurities, or combinations thereof.

IPC Classes  ?

• C07C 37/82 - SeparationPurificationStabilisationUse of additives by physical treatment by solid-liquid treatmentSeparationPurificationStabilisationUse of additives by physical treatment by chemisorption
• C07C 37/00 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
• C07C 39/00 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring

Abstract

A method for olefin polymerization includes the steps of: introducing at least two reaction monomer streams containing olefin sources into at least two parallel tubular reactors respectively, performing one-stage high-pressure polymerization respectively, and then introducing the obtained one-stage high-pressure polymerization product into one or more serial tubular reactors to perform multi-stage high-pressure polymerization. At least one free radical polymerization initiator is introduced respectively to participate in one-stage high-pressure polymerization and/or multi-stage high-pressure polymerization, and the pressure of the reaction monomer stream is greater than or equal to 100 MPa. The reaction monomer stream containing olefin source is introduced into at least two parallel tubular reactors, and performs one-stage high-pressure polymerization respectively to better control the feed temperature, pressure and other parameters of the tubular reactor.

IPC Classes  ?

• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08F 110/02 - Ethene

Abstract

A pseudo-boehmite has a ratio of crystalline sizes D(130) and D(020) at a ratio of D(130)/D(020)=1.0-1.5, preferably, 1.1-1.3. A preparation method of the pseudo-boehmite, a catalytic cracking catalyst containing the pseudo-boehmite, and a preparation method and application of the catalytic cracking catalyst are provided. The pseudo-boehmite is applied to a catalytic cracking catalyst, and can produce a significant mesopore distribution in case that the catalyst strength is qualified, significantly improving the pore structure of the catalyst, which is of great significance for promoting the efficient diffusion of heavy oil macromolecules, reaction intermediates and product molecules in the catalyst, reducing the coke yield, and optimizing the product distribution.

IPC Classes  ?

• C01F 7/142 - Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent with carbon dioxide
• B01J 21/04 - Alumina
• B01J 29/08 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the faujasite type, e.g. type X or Y
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• C10G 11/18 - Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised bed" technique

Abstract

The present application relates to an ethylbenzene deethylation catalyst, an aromatic hydrocarbon isomerization catalyst system comprising same, preparation methods therefor, and use thereof. The ethylbenzene deethylation catalyst comprises a first molecular sieve, a first binder, a regulator, an activity inhibitor, and a first metal, and has a volume-based median pore diameter of 300-1000 nm. The first molecular sieve is lamellar; the size of the first molecular sieve crystal in the b-axis direction is 0.5-5 μm, and the sizes in the a-axis direction and the c-axis direction, which are each 2-15 μm, are larger than the size in the b-axis direction. The regulator is an inert substance having an average particle size of 5-100 μm. The activity inhibitor comprises a Si-containing substance and a C-containing substance. By means of the ethylbenzene deethylation catalyst, during aromatic hydrocarbon isomerization, the ethylbenzene conversion rate can be enhanced, and the loss of dimethylbenzene can be reduced.

IPC Classes  ?

• C07C 7/148 - Purification, separation or stabilisation of hydrocarbonsUse of additives by treatment giving rise to a chemical modification of at least one compound
• C07C 15/08 - Xylenes
• C07C 5/27 - Rearrangement of carbon atoms in the hydrocarbon skeleton
• C07C 4/18 - Catalytic processes
• C07C 15/04 - Benzene
• B01J 29/22 - Noble metals
• B01J 29/80 - Mixtures of different zeolites

Abstract

The present invention relates to the technical field of methane oxidation coupling, and disclosed are a single-atom catalyst comprising a carrier and an active metal loaded on the carrier, and a preparation method therefor and the use thereof. In the single-atom catalyst provided in the present invention, the active metal forms a single-atom active site on the carrier, and a better catalytic effect of methane oxidation coupling reaction is obtained by using the synergistic effects between the active metal and the carrier and between the active metal.

IPC Classes  ?

• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
• C07C 2/84 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen oxidative coupling catalytic
• C07C 11/04 - Ethene
• B01J 37/18 - Reducing with gases containing free hydrogen

Abstract

The present invention relates to the field of olefin polymerization, and discloses polypropylene, and a preparation method therefor and the use thereof. In the polypropylene, the molar content of mm is less than or equal to 97.4%, the molar content of mmmm is greater than or equal to 91.6%, and the ratio of the molar content of mmmm to the molar content of mm is greater than or equal to 95.85%; and the half-peak width of a melting peak of the polypropylene is greater than or equal to 6°C. The polypropylene provided by the present invention has both a relatively high nominal strain at tensile fracture and a relatively high stress at tensile fracture, and when used in the production of spunbond fibers or flat filament products, the obtained products have good spinnability, good elongation at break and good breaking strength.

IPC Classes  ?

• C08F 110/06 - Propene
• C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Abstract

A hydrogenation catalyst, and preparation and use thereof are provided. The catalyst has a support and a hydrogenation active metal component, a phosphorus component and an organic complexing component supported on the support. The hydrogenation active metal component has a Group VIII metal and a Group VIB metal, the organic complexing component has an alcohol, a carboxylic acid, and/or an amine. The catalyst has a spectrum obtained by a temperature-programmed oxidation test exhibiting at least two CO2 release peaks, the first release peak being in the range of 200-300° C., the second release peak being in the range of 300-400° C. The ratio of the peak height of the first release peak to the peak height of the second release peak is in the range of 0.5-5:1.

IPC Classes  ?

• B01J 27/19 - Molybdenum
• B01J 21/04 - Alumina
• B01J 35/30 - Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
• B01J 35/40 - Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
• B01J 35/50 - Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/20 - Sulfiding
• C10G 45/08 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof

Abstract

A catalyst regeneration method is suitable for a fluidized catalytic cracking unit has a catalytic cracking reactor and a catalyst regenerator. The regeneration method has the following steps: 1) providing a biomass-derived biomass charcoal; 2) feeding the biomass charcoal and the catalyst to be regenerated from the catalytic cracking reactor into the catalyst regenerator together or separately; 3) introducing an oxygen-containing gas into the catalyst regenerator, wherein the oxygen content of the oxygen-containing gas is 14-28% by volume; and 4) contacting the catalyst to be regenerated with the biomass charcoal and oxygen-containing gas in the catalyst regenerator for coke-burning regeneration. The method can significantly reduce carbon emissions from the catalytic cracking unit, realize the recycling of carbon elements, and provide energy for other process units.

IPC Classes  ?

• B01J 38/14 - Treating with free oxygen-containing gas with control of oxygen content in oxidation gas
• C10B 53/02 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material

Abstract

A positioning and orientating apparatus for branch well, which has an orientating coupling shaft; a hydraulic cylinder having a guiding sleeve; a setting unit having an anchoring mechanism and a sealing mechanism; a setting actuation unit, having a sealing cylinder, a piston, and a force transmitting cylinder, wherein an upper end of the force transmitting cylinder is fixedly connected to the piston, a sealing chamber in communication with the central flow channel is formed within the sealing cylinder, and the piston is configured to drive the force transmitting cylinder to move downwards when a pressure of the drilling fluid reaches a first pressure; and a releasing unit having a pressure-bearing cylinder, an elastic claw, and a ball seat. The elastic claw is separated from the slot by lifting up the releasing unit when the pressure of the drilling fluid reaches a second pressure, thus completing a releasing procedure.

IPC Classes  ?

• E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes

Abstract

Disclosed are a transition metal-doped iridium-based composite catalyst and its preparation and use. The catalyst is essentially composed of amorphous oxides of iridium and a transition metal. The transition metal is selected from a metal of Group IVB, a metal of Group VB or a combination thereof. In terms of moles, the ratio of the content of iridium to the content of the transition metal in the catalyst is (0.4-0.7):(0.3-0.6). In the XRD spectrum of the catalyst, there is no diffraction peak corresponding to Iridium oxide in rutile phase. There is no diffraction peak corresponding to the crystalline phase of the oxide of the transition metal. The catalyst is in the form of a nano powder, has a uniform bulk structure, high catalytic activity and low usage amount of the precious metal iridium, and has excellent performance when applied to the anode of a proton exchange membrane water electrolyzer.

IPC Classes  ?

• C25B 11/077 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of a single catalytic element or catalytic compound the compound being a non-noble metal oxide
• C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded

Abstract

The present invention relates to the field of heterogeneous catalysts, and disclosed are a supported catalyst, and a preparation method therefor and a use thereof. The catalyst comprises a carrier and a metal supported on the carrier, wherein the carrier is a nitrogen-containing carbide modified oxide, an element N in the nitrogen carbide comprises graphitic N and pyridinic N, and the mass ratio of the graphitic N to the pyridinic N is 0.1-2:1. The nitrogen carbide in the carrier of the supported catalyst comprises the graphitic N and the pyridinic N, and the graphitic N and the pyridinic N satisfy a specific content relationship, so that the reactive metal in the supported catalyst is bonded coordinately to the graphitic N and the pyridinic N to generate a strong electronic interaction, and the reactive metal is dispersed to form active sites. In addition, the catalyst contains a rich mesoporous structure, so that metal atoms are stably dispersed and are not prone to agglomeration, significantly improving the catalytic activity and cycle stability of the catalyst.

IPC Classes  ?

• B01J 27/24 - Nitrogen compounds

Abstract

D1GG=0.1-1.2. The catalyst of the present invention can significantly improve the catalytic efficiency of a palladium-carbon catalyst, and can effectively reduce the residual amount of 4-CBA in a terephthalic acid hydrofining reaction.

IPC Classes  ?

• B01J 23/44 - Palladium
• B01J 21/18 - Carbon
• B01J 27/24 - Nitrogen compounds
• C07C 63/26 - 1,4-Benzenedicarboxylic acid
• C07B 35/02 - Reduction

Abstract

An underground tractor automatic transmission system and a control method. The system comprises a variable-speed transmission device, and a variable-speed reducer connected to a tractor via a variable-speed transmission shaft; the variable-speed transmission shaft is configured to allow, by means of an axial adjustment assembly, changes in the axial position; axial positions of the variable-speed transmission shaft at least comprise a first axial position and a second axial position; the output end of the variable-speed transmission shaft is provided with a first transmission member and a second transmission member; when the variable-speed transmission shaft is located at the first axial position, the variable-speed transmission shaft is connected to the variable-speed reducer by means of the first transmission member, so that the variable-speed transmission device is at a first reduction gear; when the variable-speed transmission shaft is located at the second axial position, the variable-speed transmission shaft is connected to the variable-speed reducer by means of the second transmission member, so that the variable-speed transmission device is at a second reduction gear.

IPC Classes  ?

• F16H 3/70 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
• F16H 37/02 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings

Abstract

The present invention belongs to the technical field of oil and gas development, and specifically relates to a water distribution device, a water distribution measurement method and a layered fracturing-flooding tubing string. The water distribution device comprises: a body, which comprises an outer wall, an inner wall, a cavity formed between the outer wall and the inner wall, and a flow-passing hole formed in the inner wall, wherein an injection hole extending in a radial direction is provided in the outer wall; a water injection mechanism arranged in the cavity, wherein the water injection mechanism is configured to open or close the injection hole in response to the pressure in the flow-passing hole; a measurement mechanism, which is arranged in the flow-passing hole and is configured to measure flow, wherein the measurement mechanism is configured to enable a fluid in the flow-passing hole to flow to the outside of the body by means of the water injection mechanism and the injection hole; a bypass mechanism arranged in the cavity, wherein the bypass mechanism is configured to be capable of being in parallel communication with the flow-passing hole, such that at least part of the fluid can bypass the measurement mechanism and flow downwards out of the water distribution device; and a switching mechanism arranged at the lower end of the body, wherein the switching mechanism is configured to be rotatable relative to the body so as to open or close the bypass mechanism.

IPC Classes  ?

• E21B 43/20 - Displacing by water
• E21B 47/00 - Survey of boreholes or wells

Abstract

1162345166126144 alkylene; and M is selected from H or an alkali metal. The compound can be used as a viscosity reducer applied to thickened oil exploitation, and has the effects of strong high-temperature resistance and a good viscosity reduction effect.

IPC Classes  ?

• C07C 309/15 - Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton containing amino groups bound to the carbon skeleton the nitrogen atom of at least one of the amino groups being part of any of the groups X being a hetero atom, Y being any atom
• E21B 43/22 - Use of chemicals or bacterial activity

Abstract

The present invention relates to the technical field of polybenzimidazoles. Disclosed are a polybenzimidazole, a polymer film, a preparation method, and a use. The polybenzimidazole of the present invention comprises a structural unit A1 and a structural unit A2 and optionally comprises a structural unit B1 and a structural unit B2, wherein the structural unit A1 has a structure represented by formula (A1), the structural unit A2 has a structure represented by formula (A2), the structural unit B1 has a structure represented by formula (B1), and the structural unit B2 has a structure represented by formula (B2). The polybenzimidazole of the present invention has relatively high light transmittance and relatively low haze, and the film has relatively high elongation at break.

IPC Classes  ?

• C08G 73/18 - Polybenzimidazoles
• C08J 5/18 - Manufacture of films or sheets

Abstract

Disclosed are a polymer fluid loss agent, a preparation method therefor, and a use thereof. The polymer fluid loss agent comprises a structural unit A represented by formula (1), a structural unit B represented by formula (2), a structural unit C derived from a carboxylic acid monomer, a structural unit D represented by formula (3), and a structural unit E. Structural unit E is derived from a vinyl monomer containing one or more cyclic structures, the cyclic structure is an aromatic ring or a lactam ring, and the cyclic structure is directly connected to a vinyl group. When the cyclic structure is a lactam ring, a nitrogen atom is connected to the vinyl group. The polymer fluid loss agent has peaks 1 and 2 in a gel permeation chromatography spectrum, and the number average molecular weight of peak 1 is 5×105-9×105, and the number average molecular weight of peak 2 is 4×104-9.9×104. The polymer fluid loss agent has low viscosity, causing an initial consistency of a prepared cement slurry system to be no more than 20 Bc, and not affecting on-site construction due to excessive initial consistency. The polymer fluid loss agent can be used for cementing oil and gas wells.

IPC Classes  ?

• C09K 8/487 - Fluid loss control additivesAdditives for reducing or preventing circulation loss
• C08F 220/58 - Amides containing oxygen in addition to the carbonamido oxygen
• C08F 220/56 - AcrylamideMethacrylamide
• C08F 220/06 - Acrylic acidMethacrylic acidMetal salts or ammonium salts thereof
• C08F 226/10 - N-Vinyl-pyrrolidone
• C08F 226/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a single or double bond to nitrogen

Abstract

Disclosed are a method and a system for continuously preparing lactide by step control. The method includes the steps of (1) reacting a lactic acid oligomer and a depolymerization catalyst in a first depolymerization reaction unit to obtain a first liquid-phase material; (2) circulating the first liquid-phase material in a second depolymerization reaction unit for reaction until the molecular weight of the liquid-phase material is higher than 6,000 to obtain a second liquid-phase material; (3) circulating the second liquid-phase material in a third depolymerization reaction unit for reaction until the molecular weight of the liquid-phase material is higher than 10,000; and (4) collecting gas-phase crude lactide from the first depolymerization reaction unit, the second depolymerization reaction unit and the third depolymerization reaction unit, and then purifying same.

IPC Classes  ?

• C07D 319/12 - 1,4-DioxanesHydrogenated 1,4-dioxanes not condensed with other rings
• B01J 27/135 - HalogensCompounds thereof with titanium, zirconium, hafnium, germanium, tin or lead
• B01J 31/04 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts

Abstract

An adsorbent for trimethylbenzene-based compounds, contains, relative to the total amount of X-type molecular sieve and matrix, 93-99 wt % of X-type molecular sieve and 1-7 wt % of matrix. The matrix is a substance after crystal transformation through in-situ crystallization of clay mineral, the adsorbent is modified with at least one bivalent cation selected from Mg2+, Ca2+, Sr2+, Fe2+, Co2+, Ni2+ and Zn2+ and optionally modified with at least one monovalent cation selected from Li+, Na+, K+, Rb+ and Cs+. A method for preparing the adsorbent, a method of separating trimethylbenzene-based compounds by using the adsorbent, and an apparatus for separating trimethylbenzene-based compounds are provided.

IPC Classes  ?

• B01J 20/18 - Synthetic zeolitic molecular sieves
• B01D 3/14 - Fractional distillation
• B01D 15/14 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the introduction of the feed to the apparatus
• B01D 15/18 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
• B01D 15/20 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the sorbent material
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/284 - Porous sorbents based on alumina
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• B01J 20/34 - Regenerating or reactivating
• C07C 7/13 - Purification, separation or stabilisation of hydrocarbonsUse of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique

Abstract

A high-pressure gas filling and unloading system has a high-pressure gas pipeline for connecting to a gas filling station, a displacement gas pipeline for gas displacement, a plurality of double-channel rotating joints provided in said high-pressure gas pipeline and configured to be rotatable under pressure, and a filling and unloading joint provided at a free end of said high-pressure gas pipeline and comprising a control mechanism. The filling and unloading joint is configured to form a displacement working channel or a filling and unloading working channel therein through the control mechanism. The control mechanism is configured to alternately open the displacement working channel and the filling and unloading working channel, so that the displacement working channel is in communication with the displacement gas pipeline for gas displacement, or the filling and unloading working channel is in communication with the high-pressure gas pipeline for filling and unloading of high-pressure gas.

IPC Classes  ?

• F17C 5/06 - Methods or apparatus for filling pressure vessels with liquefied, solidified, or compressed gases for filling with compressed gases
• F17C 7/00 - Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass

Abstract

Disclosed in the present invention are a hydrocarbon composition, and a preparation method therefor and the use thereof. The hydrocarbon composition contains a bicyclic aromatic hydrocarbon and an aromatic hydrocarbon with three or more rings, wherein based on the total weight of the hydrocarbon composition, the total content of the aromatic hydrocarbons is greater than or equal to 90 wt%, the content of the bicyclic aromatic hydrocarbon is 60-100 wt%, and the content of the aromatic hydrocarbon with three or more rings is 0-40 wt%; the aromatic hydrocarbons have 35-80 carbon atoms; and the mass ratio NP/IP of n-alkane carbon to iso-alkane carbon is 4.0-6.8. The preparation method for the hydrocarbon composition comprises: (1) reacting an aromatic hydrocarbon oil with an olefin oil in the presence of a catalyst, and subjecting the resulting reaction product to sedimentation separation, so as to obtain an oil phase and a catalyst phase; and (2) washing the oil phase, distilling and cutting the washed oil phase, and refining the resulting vacuum residue fraction, so as to obtain the hydrocarbon composition The hydrocarbon composition of the present invention has a high viscosity, a high viscosity index, a low pour point and a good oxidation stability, and is suitable for being used as a high-quality high-viscosity special oil.

IPC Classes  ?

• C10G 57/00 - Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one cracking process or refining process and at least one other conversion process
• C10M 107/00 - Lubricating compositions characterised by the base-material being a macromolecular compound

Abstract

A process for continuously producing 5-hydroxymethylfurfural and 2,5-furandicarboxylic acid includes (1) in a dual liquid phase reaction medium containing a polar organic solvent and an aqueous halogenated quaternary ammonium salt solution, in the presence of a protonic acid catalyst, subjecting a fructose-based carbohydrate to an intramolecular dehydration reaction to produce an organic phase containing 5-hydroxymethylfurfural; and (2) adding water to the organic phase containing 5-hydroxymethylfurfural obtained in step (1), and in the presence of an oxidation catalyst and oxygen gas, subjecting the 5-hydroxymethylfurfural to an oxidation reaction to produce 2,5-furandicarboxylic acid. The process can continuously produce 5-hydroxymethylfurfural and 2,5-furandicarboxylic acid by starting from fructose-based carbohydrates, avoids the separation and purification of 5-hydroxymethylfurfural during the process of producing 2,5-furandicarboxylic acid.

IPC Classes  ?

• C07D 207/333 - Radicals substituted by oxygen or sulfur atoms
• B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
• B01J 21/08 - Silica
• B01J 21/18 - Carbon
• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• B01J 23/52 - Gold
• B01J 35/61 - Surface area
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/08 - Heat treatment
• C07D 207/34 - Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms

Abstract

A composite material includes a plurality of polypropylene sheet layer unit groups that are sequentially stacked; each polypropylene sheet layer unit group comprises at least one of the same or different polypropylene sheet layer units, the structure of each polypropylene sheet layer unit is BiAiB′i; the structure of the polypropylene composite material is . . . i-th group, . . . second group, first group, second group, . . . i-th group, . . . ; the melting point of polypropylene composition Ai is greater than the melting point of polypropylene compositions Bi and B′i; and the average value of the melting points of all outer layers in the i-th group is greater than the average value of the melting points of all outer layers in an (i-1)th group. The polypropylene composite material has a very good tensile property and very good impact resistance, and also has good interlayer stripping strength at a relatively low hot-pressing temperature.

IPC Classes  ?

• B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
• B32B 7/02 - Physical, chemical or physicochemical properties
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 37/10 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure
• B32B 38/00 - Ancillary operations in connection with laminating processes

Abstract

Methods and systems for determining in-situ stresses in anisotropic rocks are presented. The methods consider both anisotropic rock properties, geothermal and tectonic effects. They calculates in-situ stresses for subsurface rocks with anisotropies and non-isothermal effects, so that they can be applied to geothermal energy and geo-energy. Horizontal stresses in the vertical transverse isotropy (VTI) rock and in the horizontal transverse isotropy (HTI) rock are obtained for calculating in-situ stresses in naturally fractured rocks. Compared with the conventional isotropic model, the method applicable to VTI rocks predicts a higher minimum horizontal stress and a higher maximum horizontal stress, which is suitable for shales and other laminated formations. The method applicable to HTI rocks gives a lower minimum horizontal stress than the conventional model. Geothermal temperature effects are also integrated into the methods so that the methods are applied to geothermal energy.

IPC Classes  ?

• G01N 33/24 - Earth materials
• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• E21B 49/02 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil

Abstract

The present invention relates to the technical fields of membrane separation and electrochemistry. Disclosed are an anion exchange membrane, a preparation method therefor and the use thereof, an integrated electrode and a manufacturing method therefor, and an electrosorptive deionization device. The anion exchange membrane comprises a plurality of polyphenylene oxide molecular chains having a structure shown as formula I and a plurality of molecular chains having a structure shown as formula II, wherein Q1 or Q2 is independently a halogen atom or is linked to the molecular chain having the structure shown as formula II to form a bond. The anion exchange membrane uses polyphenylene oxide as a main chain backbone, and the backbone contains a cationic group and long-carbon-chain molecular chains linked to the polyphenylene oxide backbone, such that the anion exchange membrane has excellent thermal stability while achieving high OH- conductivity, stability and excellent durability. In addition, the integrated electrode comprising the anion exchange membrane can remarkably increase the ion transport rate and improve the saturated adsorption capacity of an electrosorption electrode, and when being used in electrosorptive deionization devices, the integrated electrode can remarkably improve the desalination performance of the electrosorptive deionization devices.

IPC Classes  ?

• B01J 41/13 - Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
• C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
• C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
• C08G 65/48 - Polymers modified by chemical after-treatment

Abstract

33. The active component of the catalyst of the present invention contains a high content of nickel. When used for the second-stage hydrogenation of cracked gasoline, the catalyst can be suitable for treating a raw material having a higher diene content, shows relatively strong monoolefin saturation performance and desulfurization and denitrification activity, can effectively inhibit carbon deposition, and has high stability. Therefore, the catalyst of the present invention is particularly suitable for use in industrial production of the second-stage hydrogenation of cracked gasoline or a fraction thereof.

IPC Classes  ?

• C10G 45/08 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
• B01J 23/883 - Molybdenum and nickel
• B01J 23/02 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the alkali- or alkaline earth metals or beryllium
• B01J 21/12 - Silica and alumina
• B01J 27/185 - PhosphorusCompounds thereof with iron group metals or platinum group metals
• B01J 27/186 - PhosphorusCompounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium

Abstract

An interconnectable downhole instrument package has a downhole instrument disposed in a pressure housing; a male connector assembly connecting to a first end of the downhole instrument; and a female connector assembly connecting to a second end of the downhole instrument. The male connector assembly has a first housing and a male rotatable connector that are connected together, while the female connector assembly has a second housing and a female rotatable connector. The second housing is adapted to receive the female rotatable connector.

IPC Classes  ?

• E21B 17/02 - CouplingsJoints
• E21B 47/06 - Measuring temperature or pressure
• E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
• H01R 39/64 - Devices for uninterrupted current collection

Abstract

A composition for preparing a polycaprolactone shape memory material, and a polycaprolactone shape memory material, a preparation method therefor, and a use thereof are provided. The material contains a plurality of modified polyrotaxane macromolecular chains, and a plurality of composite macromolecular chains connected to different modified polyrotaxane macromolecular chains, wherein each of the composite macromolecular chains comprises at least two segments of polycaprolactone macromolecular chains, a reversible linking group between different polycaprolactone macromolecular chains, and a linking modification group for linking cyclodextrin-derived cyclic structures comprised in the polycaprolactone macromolecular chains and the modified polyrotaxane macromolecular chains. The reversible linking group is a photo-reversible linking group or a thermally reversible linking group. The network topology defect of a polymer is adjusted to improve the toughness of the shape memory material to improves its designability and solid remoldability.

IPC Classes  ?

• C08G 63/91 - Polymers modified by chemical after-treatment
• C08G 63/82 - Preparation processes characterised by the catalyst used
• C08G 63/83 - Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
• C08G 83/00 - Macromolecular compounds not provided for in groups
• C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules

Abstract

An olefin polymerization catalyst component, a catalyst system, a prepolymerization catalyst composition and an olefin polymerization method are provided. The catalyst component contains magnesium, titanium, halogen, and an internal electron donor. The internal electron donor includes a compound A, a compound B and a compound C. The compound A is selected from a hydroxybenzoyl compound represented by formula (I), the compound B is selected from one or more of an ester compound other than the compound A and an ether compound, and the compound C is selected from an alkoxysilane represented by formula RnSi(OR6)4-n. A content of the compound A may be zero. The catalyst system contains the catalyst component and a co-catalyst component or a reaction product of the two, or a prepolymerization catalyst composition prepared by further prepolymerization is used for olefin copolymerization.

IPC Classes  ?

• C08F 10/06 - Propene

Abstract

A ZSM-5 molecular sieve, a preparation method therefor and an application thereof, a hydrotreatment catalyst, a hydrodewaxing catalyst, and applications thereof are provided. The ZSM-5 molecular sieve has a pyridine infrared total acid amount being 0.03-0.40 mmol/g, and a di-tert-butylpyridine infrared total acid amount being 0.002-0.02 mmol/g; and the mesoporous pore volume of the ZSM-5 molecular sieve accounts for 10-20% of the total pore volume, and/or in the ZSM-5 molecular sieve, the mesoporous pore volume of 2-10 nm accounts for 70-95% of the total mesoporous pore volume. The molecular sieve can be used as a carrier or an active component, for example, the hydrodewaxing catalyst prepared from the ZSM-5 molecular sieve is used for oil product treatment, such that the quality and the yield of a low-condensation-point oil product can be improved.

IPC Classes  ?

• C01B 39/38 - Type ZSM-5
• B01J 29/46 - Iron group metals or copper

Abstract

A hydrogenation catalyst and a preparation method therefor and the use thereof, and a hydrogenation reaction method for oil products are presented. The hydrogenation catalyst is a sulfurized hydrogenation catalyst and comprises a carrier, a molecular sieve and an active component, wherein the active component comprises at least one of group VIII metal elements and at least one of group VIB metal elements, and is characterized by using a TEM-EDS method. On the basis of the silicon element, the ratio of the amount of the molecular sieve directly acting on a group VIB metal sulfide to the total amount of the molecular sieve is 60-100%. The hydrogenation catalyst provided in the present invention can control a polycyclic aromatic hydrocarbon to realize ring opening without chain scission, generating a monocyclic aromatic hydrocarbon with a long-branched chain, which can be used as both an ethylene cracking raw material and a diesel product.

IPC Classes  ?

• B01J 37/02 - Impregnation, coating or precipitation
• B01J 21/04 - Alumina
• B01J 29/16 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the faujasite type, e.g. type X or Y containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
• B01J 29/48 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
• B01J 29/78 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 37/04 - Mixing
• B01J 37/06 - Washing
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam
• B01J 37/20 - Sulfiding
• C07C 5/11 - Partial hydrogenation

Abstract

A free radical solution polymerization process, a polymer and a use thereof are provided. The polymerization process includes the steps of introducing micro-nano bubbles of gas B into an aqueous solution of vinyl monomer(s), and initiating the free radical solution polymerization of the vinyl monomer(s) by the free radicals generated after the cavitation of the micro-nano bubbles to prepare a polymer. The micro-nano bubbles can generate free radicals through cavitation without an external stimulus, thus initiating the free radical solution polymerization of the vinyl monomer(s) by the cavitation of the micro-nano bubbles.

IPC Classes  ?

• C08F 2/10 - Aqueous solvent
• C08F 2/18 - Suspension polymerisation

Abstract

A separation membrane, a preparation method therefor and a use thereof in magnesium and lithium separation are provided. The separation membrane includes, in sequence, a base material layer, a porous support layer, a polyamide layer and a modification layer. Cross-linked polymers forming the modification layer has structural units provided by polyphenols and polyamines, at least some of the structural units provided by the polyphenols are connected to the polyamide layer via ortho positions of phenolic hydroxyl groups. The preparation method includes sequentially preparing the porous support layer, the polyamide layer and the modification layer on the base material layer. The method of preparing the modification layer includes under a first pressure, bringing one side of the polyamide layer into first contact with the polyphenol solution; then under a second pressure, bringing one side of the polyamide layer into second contact with the polyamine solution, to complete a self-assembly reaction.

IPC Classes  ?

• B01D 71/60 - Polyamines
• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• B01D 69/10 - Supported membranesMembrane supports
• B01D 69/12 - Composite membranesUltra-thin membranes
• B01D 71/48 - Polyesters

Abstract

A metallocene complex and a preparation method therefor, a catalyst composition, an olefin polymerization method and an olefin polymer are provided. The metallocene complex has a structure of formula I. The catalyst composition containing the metallocene complex shows an improved catalytic activity, and also has relatively high structural regularity control capability for a conjugated diene structural unit and a relatively high capability for copolymerizing ethylene and conjugated diene.

IPC Classes  ?

• C08F 36/06 - Butadiene

Abstract

The present application belongs to the field of oil and gas exploration. Provided are a positive mud pulse encoding method, a decoding method, a device and a system. The encoding method comprises: determining the number of bits of binary data to be encoded; in response to the number of bits being greater than a threshold value, splitting the binary data into at least two pieces of sub-binary data on the basis of a splitting rule; on the basis of the number of bits and a numerical value of each piece of the sub-binary data, constructing a corresponding sub-data frame for representing said sub-binary data; and on the basis of the sub-data frames, generating a positive mud pulse signal. Further provided in the present application are the decoding method corresponding to the encoding method, corresponding encoding and decoding devices and a system. Representing different binary numbers on the basis of the combination of features such as the number of pulses, pulse positions, pulse widths and the splitting rule can reduce the waste of transmission bandwidth resources, thereby significantly increasing the transmission rate of positive pulse signals and reducing the power consumption of mud pulse generators.

IPC Classes  ?

• H04B 14/04 - Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation

Goods & Services

Downloadable computer software for use in database management, use as a spreadsheet, word processing, processing and interpretation of well-log curves, geomechanical and in-situ stress modeling including data calculation, simulation and analysis; Downloadable computer software designed to be deployed on web servers for use in database management, use as a spreadsheet, word processing, processing and interpretation of well-log curves, geomechanical and in-situ stress modeling including data calculation, simulation and analysis; Downloadable computer software using artificial intelligence (AI) for use in software development, machine learning, facial and speech recognition, and processing and interpretation of well-log curves, geomechanical and in-situ stress modeling including data calculation, simulation and analysis; Recorded computer software for use in database management, use as a spreadsheet, word processing, processing and interpretation of well-log curves, geomechanical and in-situ stress modeling including data calculation, simulation and analysis; Recorded computer software using artificial intelligence (AI) for use in software development, machine learning, facial and speech recognition, and processing and interpretation of well-log curves, geomechanical and in-situ stress modeling including data calculation, simulation and analysis

Abstract

An iridium-based catalyst, wherein iridium in the catalyst is in the form of crystalline iridium dioxide. Relative to the catalyst as a whole, the content of the iridium element by mass fraction is greater than 70%, and the apparent mass-to-volume ratio of the catalyst is not higher than 0.55 g/cm3. The catalyst has a large specific surface area, a high porosity, and a low apparent mass-to-volume ratio, and therefore has excellent mass transfer performance and apparent catalytic activity. A three-dimensional porous structure of the catalyst can improve the utilization rate of the iridium element, so that the loading capacity of iridium in a membrane electrode is reduced, and the catalyst has excellent stability. The provided preparation method is simple, convenient, and highly economical.

IPC Classes  ?

• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 11/091 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds

Abstract

The present invention relates to an iridium-based catalyst. The catalyst comprises elemental iridium and optionally present iridium oxide. With respect to the entire catalyst, the content of iridium is 70% or above in terms of mass fraction, and the apparent mass-volume ratio of the catalyst is not higher than 0.55 g/cm3. The catalyst has a large specific surface area, a high porosity and a low apparent mass-volume ratio, and therefore has excellent mass transfer performance and an apparent catalytic activity. A three-dimensional porous structure of the catalyst can improve the utilization rate of iridium, such that the loading of iridium in a membrane electrode is reduced, and the catalyst has excellent stability. The preparation method for the catalyst is simple and convenient, and has a relatively high economy.

IPC Classes  ?

• C25B 11/091 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms

Abstract

An iridium-based catalyst. Relative to the total mass of the catalyst, the mass percentage content of an iridium element is 70% or higher. The apparent density of the catalyst is not higher than 0.55 g/cm3. The catalyst has a large specific surface area, high porosity and low apparent density, and therefore has excellent mass transfer performance and apparent catalytic activity. A three-dimensional porous structure of the catalyst can improve the utilization rate of the iridium element, thereby reducing the loading of iridium in a membrane electrode, and the catalyst has excellent stability. A preparation method provided is simple and convenient, and has relatively high economic efficiency.

IPC Classes  ?

• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 11/091 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds

Abstract

1002002,G002,G is the peak intensity of the (002) peak of internal standard graphite in the XRD pattern, and the weight ratio of the carbon material to the graphite during test is 1:10. The carbon material provided by the present invention has a remarkably improved proportion of slope capacity, and slope sections have fast ion transport kinetics and high potential, thus facilitating improvement of rate capacity and cycle performance.

IPC Classes  ?

• C01B 32/312 - Preparation
• C01B 32/354 - After-treatment
• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• H01M 4/04 - Processes of manufacture in general

Abstract

22 generated at the anode.

IPC Classes  ?

• C25B 3/03 - Acyclic or carbocyclic hydrocarbons
• C25B 3/26 - Reduction of carbon dioxide
• C25B 3/25 - Reduction
• C25B 3/00 - Electrolytic production of organic compounds
• C25B 1/23 - Carbon monoxide or syngas
• C25B 1/00 - Electrolytic production of inorganic compounds or non-metals
• C25B 11/031 - Porous electrodes
• C25B 11/03 - ElectrodesManufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
• C25B 11/093 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds at least one noble metal or noble metal oxide and at least one non-noble metal oxide
• C25B 11/069 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of at least one single element and at least one compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of two or more compounds

Abstract

The present invention provides a method for producing olefins by catalytic dehydrogenation of alkanes and an apparatus. The apparatus comprises a reaction unit, a regeneration unit, and a product separation unit; the reaction unit comprises a pre-lift zone, an oil agent contact zone, a reaction zone, a product quenching zone, a reactor outlet zone, an oil agent separation zone, and a stripping zone. The oil agent contact zone is provided with a feeding distributor and a catalyst distributor, and an oil agent contact space is formed between the feeding distributor and the catalyst distributor, enhancing countercurrent contact between an alkane and a catalyst, and better facilitating the initiation of a catalytic dehydrogenation reaction. By bringing an alkane feedstock into contact with a catalyst and then leveraging the shape and parameters of the reactor, the present invention provides a proper reaction environment for a catalytic dehydrogenation reaction, thereby facilitating the catalytic dehydrogenation reaction, and improving the alkane conversion rate. In addition, the method and the apparatus of the present invention allow for alkane dehydrogenation reactions to be conducted under negative pressure, resulting in good safety and further improving alkane conversion rates and olefin selectivity.

IPC Classes  ?

• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
• B01J 3/02 - Feed or outlet devices therefor
• C07C 11/02 - Alkenes

Abstract

A catalyst regeneration method is suitable for use in a fluidized catalytic cracking unit that includes a catalytic cracking reactor and a catalyst regenerator. The regeneration method includes the steps of: 1) providing a bio-based liquid phase fuel; 2) introducing the bio-based liquid phase fuel into a catalyst regenerator or a stripping section of the catalytic cracking reactor; 3) introducing an oxygen-containing gas into the catalyst regenerator; and 4) sending the spent catalyst from the catalytic cracking reactor to the catalyst regenerator, where the spent catalyst is contacted with the bio-based liquid phase fuel or the residue thereof and oxygen-containing gas to carry out coke burning regeneration. This method can greatly reduce the carbon emission of the catalytic cracking unit and can also provide energy for other process units and also converts part of the bio-based liquid phase fuel into chemicals.

IPC Classes  ?

• B01J 29/90 - Regeneration or reactivation
• B01J 38/02 - Heat treatment
• B01J 38/14 - Treating with free oxygen-containing gas with control of oxygen content in oxidation gas
• B01J 38/20 - Plural distinct oxidation stages
• B01J 38/32 - Indirectly heating or cooling material within regeneration zone or prior to entry into regeneration zone
• C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
• C10G 11/18 - Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised bed" technique

Abstract

A catalyst regeneration method is suitable for a fluidized catalytic cracking unit having a catalytic cracking reactor and a catalyst regenerator. The regeneration method has the following steps: 1) providing a gaseous biomass-derived fuel containing hydrogen and/or methane; 2) directly feeding the gaseous fuel into the catalyst regenerator without separation and purification; 3) introducing an oxygen-containing gas into the catalyst regenerator; and 4) feeding the catalyst to be regenerated from the catalytic cracking reactor into the catalyst regenerator, where it contacts the gaseous fuel and the oxygen-containing gas for coke-burning and regeneration. The method introduces a gaseous biomass-derived fuel as energy supply in the catalyst regeneration process to replace fossil fuels, fundamentally changing the energy source of the catalytic cracking unit, significantly reducing the carbon emissions of the catalytic cracking unit, realizing the recycling of carbon elements, and supplying energy to other process units.

IPC Classes  ?

• C10G 11/18 - Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised bed" technique

Abstract

The present invention relates to the field of medical repair materials and particularly to a double-crosslinked hydrogel composite material, a preparation method therefor, and use thereof. The double-crosslinked hydrogel composite material comprises a physical-chemical double-crosslinked copolymer formed by reacting at least one type of acrylic monomer and at least one type of zwitterionic monomer in the presence of nanoparticles and a crosslinking agent. The double-crosslinked hydrogel composite material of the present invention has the characteristics of high mechanical strength, high adhesion strength, and swelling resistance, is low in cost, and features a preparation process that is simple and rapid and easy to regulate. Therefore, the material has very high application value.

IPC Classes  ?

• A61L 27/16 - Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
• A61L 27/52 - Hydrogels or hydrocolloids
• A61L 27/42 - Composite materials, i.e. layered or containing one material dispersed in a matrix of the same or different material having an inorganic matrix
• A61L 27/44 - Composite materials, i.e. layered or containing one material dispersed in a matrix of the same or different material having a macromolecular matrix

Abstract

The present invention relates to a catalytic conversion method and system. The method comprises the following steps: bringing a heavy hydrocarbon raw material into contact with a first regenerated catalyst in a first reactor so as to undergo a first catalytic conversion reaction, and performing first separation on a first material obtained after the first catalytic conversion reaction, so as to obtain a first catalyst to be regenerated and a first reaction oil gas; feeding a fresh second catalyst into a second reactor, bringing a light hydrocarbon raw material into contact with the second catalyst in the second reactor to undergo a second catalytic conversion reaction, so as to obtain a second material containing the second catalyst and a reaction product, and performing second separation on the second material, so as to obtain a second catalyst to be regenerated and a second reaction oil gas; feeding the first catalyst to be regenerated into a first regenerator to undergo regeneration and feeding the fresh first catalyst into the first regenerator, so as to obtain the first regenerated catalyst, and returning same to the first reactor; and introducing at least part of the second catalyst to be regenerated into the first reactor. The method of the present invention can improve the yields of ethylene and propylene.

IPC Classes  ?

• C10G 65/18 - Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural parallel stages only including only cracking steps

Abstract

The present invention belongs to the field of catalytic cracking, and provides a catalyst, more specifically, a catalytic cracking catalyst for mass production of propylene and butene from wax oil distillate and a preparation method therefor. The catalyst comprises 45-80 wt% of a matrix and 20-55 wt% of a molecular sieve, wherein the molecular sieve comprises an MFI type molecular sieve and an optional FAU type molecular sieve, and the MFI type molecular sieve is newly developed particles, and is a ZSM-5 molecular sieve with higher hydrothermal stability, in which secondary particles are formed by the aggregation of primary particles. The catalyst is used for catalytic cracking of wax oil distillate, exhibits good hydrothermal stability and catalytic effect, and can significantly improve the yield of ethylene and propylene.

IPC Classes  ?

• C01B 39/38 - Type ZSM-5
• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11

Abstract

Provided in the present invention are a method and system for producing a light aromatic hydrocarbon. A catalytic cracking cycle oil undergoes a two-stage hydrogenation treatment in the presence of hydrogen and a hydrogenation catalyst, and the hydrogenated oil gas passes through a first rectification tower device to obtain an overhead light fraction, a light aromatic hydrocarbon-rich fraction, a first recycle fraction having a specific distillation range, and a second recycle fraction having a specific distillation range; and the first recycle fraction enters a first reaction zone of a catalytic cracking device for a catalytic cracking reaction, and the second recycle fraction enters a second reaction zone of the catalytic cracking device for a reaction or returns to a second section of the hydrogenation treatment for recycling. Furthermore, a reaction product obtained from catalytic cracking is separated by a second rectification tower device to obtain a first fraction oil gas, a second fraction oil, and an oil slurry, the second fraction oil returns to a first section of the hydrogenation treatment, and optionally, the first fraction oil gas along with the hydrogenated oil gas enters the first rectification tower device for separation. In the present invention, a catalytic conversion product and a hydrogenation product are effectively separated in the same separation system and then undergo catalytic conversion in different zones, thereby saving the separation equipment and device investment while improving the yield of the produced light aromatic hydrocarbon.

IPC Classes  ?

• C10G 69/04 - Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of catalytic cracking in the absence of hydrogen
• C10G 11/14 - Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts
• C10G 45/02 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing

Abstract

An Sn-Y type molecular sieve, a preparation method therefor and the use thereof, and an oxidation reaction method for a cyclic ketone. The surface silicon/tin molar ratio of the molecular sieve is 50-70, and the bulk silicon/tin molar ratio is 200-300; with respect to the Sn-Y type molecular sieve, Sn is mainly intensively distributed on the outer surface of a Y molecular sieve, thus achieving better catalytic performance for the Baeyer-Villiger oxidation reaction of a cyclic ketone.

IPC Classes  ?

• B01J 29/08 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the faujasite type, e.g. type X or Y
• C07D 313/04 - Seven-membered rings not condensed with other rings

Abstract

A Sn-Beta molecular sieve, a preparation method therefor and a use thereof, and an oxidation reaction method for a cyclic ketone. The silicon-to-tin molar ratio of the molecular sieve is 8-15, and the molecular sieve has a Lewis acid content of 600-900 μmol/g as measured by pyridine infrared spectroscopy at a desorption temperature of 200°C. The Sn-Beta molecular sieve has high Sn content and high Lewis acid content, and has excellent catalytic performance for Baeyer-Villiger oxidation reaction of cyclic ketones.

IPC Classes  ?

• C01B 39/48 - Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
• C07D 313/04 - Seven-membered rings not condensed with other rings

Abstract

10509090 is equal to 150-250 μm. The preparation method for the degradable nanomaterial comprises: subjecting a nanomicrosphere lactide raw material to a hydroxylation treatment and an activation treatment, and then mixing and bringing same into contact with a fluorocarbon-chain-containing surfactant. The degradable nanomaterial has excellent degradation performance at relatively low temperatures, which satisfies low-temperature construction requirements, and can effectively block pores having various sizes when used in a fracturing fluid system.

IPC Classes  ?

• C09K 8/68 - Compositions based on water or polar solvents containing organic compounds

Abstract

10509090 is 20-90 μm. The preparation method for the acid-soluble nano material comprises: carrying out hydroxylation treatment on an unsaturated fatty monoacid, and carrying out a contact reaction between the hydroxylated unsaturated fatty monoacid and a nano carbonate raw material; and carrying out amination treatment on a product of the contact reaction, wherein the nano carbonate raw material contains a nano calcium carbonate raw material and/or a nano magnesium carbonate raw material. The acid-soluble nano material has the dissolution performance meeting fracturing construction requirements, can realize multi-size plugging in a compact reservoir and improve the plugging rate of a pore throat, and can enter the pore throat for adsorption and space occupation to reduce the retention amount of the fracturing fluid, thereby reducing damage to the reservoir.

IPC Classes  ?

• C09K 8/66 - Compositions based on water or polar solvents
• C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
• C09K 8/506 - Compositions based on water or polar solvents containing organic compounds
• C01F 11/18 - Carbonates

Abstract

A metal pollution-resistant catalyst, its preparation and application are provided. The catalyst consists of a first alumina comprising a modified metal Mn and a second alumina. The ratio of the integral areas of the two peaks at 3670 cm−1 and 3730 cm−1 in the infrared spectroscopy of the catalyst is 1-5:1. The method for preparing the catalyst comprises a step of forming a slurry of an acid-soluble first alumina, a non-acid-soluble second alumina, water and optionally acid and a modified metal oxide. The metal pollution-resistant catalyst and the particle containing a catalytic cracking active component form a catalytic cracking catalyst, useful for catalytic cracking of hydrocarbon oil containing pollution metals. In the case of nickel pollution, catalytic cracking of hydrocarbon oil can reduce the ratio of hydrogen to methane.

IPC Classes  ?

• B01J 37/02 - Impregnation, coating or precipitation
• B01J 23/34 - Manganese
• B01J 35/40 - Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
• B01J 35/51 - Spheres
• B01J 35/61 - Surface area
• B01J 35/63 - Pore volume
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 37/08 - Heat treatment
• C10G 11/18 - Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised bed" technique

Abstract

The present invention relates to the fracturing technology, and in particular to a nano-material-containing composition and a preparation method therefor and a use thereof, and a fracturing fluid. The composition comprises a nano material and a solvent. The hydrodynamic particle size of molecular aggregates of the composition satisfies: D10<30 μm, D50=50-150 μm, and D90=150-300 μm. The preparation method for the composition comprises: after hydroxylation of gas-phase nanosilicon dioxide in a solvent, making gas-phase nanosilicon dioxide come into contact with a monomer represented by formula (II) in the presence of an initiator, and activating the resulting product and then mixing same with a fluorocarbon surfactant. Also provided are a use of the composition in a fracturing fluid and a fracturing fluid containing the composition. The composition can facilitate rapid flowback of a fracturing fluid from a reservoir, thereby reducing the damage to the reservoir.

IPC Classes  ?

• C09K 8/66 - Compositions based on water or polar solvents
• C09K 8/504 - Compositions based on water or polar solvents
• C09K 8/03 - Specific additives for general use in well-drilling compositions

Abstract

Disclosed is a catalytic packing module suitable for a catalytic rectification device, sequentially comprising, from inside to outside, a solid catalyst layer at the center, a first mesh layer wrapping the catalyst layer, an inert packing layer wrapping the first mesh layer, and a second mesh layer wrapping the inert packing layer. The catalytic packing module uses a special layered structure design, thereby ensuing sufficient contact between reaction materials and a catalyst, and the catalytic packing module further has the advantages of convenient loading/unloading, stable operation, minimal catalyst attrition, flexibility to adjust the use amount of the catalyst and the like.

IPC Classes  ?

• B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
• B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
• B01J 19/32 - Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer

Abstract

The present invention relates to an SCM-3 molecular sieve, a preparation method therefor, and a use thereof. The X-ray diffraction spectrogram of the SCM-53 molecular sieve provided by the present invention comprises a diffraction peak at 2θ of 4.292°±0.40°, and optionally further comprises one or more of diffraction peaks at 2θ of 8.805°±0.50°, 12.119°±0.40°, and 26.036°±0.40°. The SCM-53 molecular sieve of the present invention has a novel skeletal structure and/or chemical composition, and has very important application value.

IPC Classes  ?

• C01B 39/48 - Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
• B01J 20/16 - Alumino-silicates
• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

A modified titanium silicalite molecular sieve, which is characterized by containing titanium, silicon, oxygen and cesium, wherein the 133Cs MAS NMR spectrum thereof at least has resonance absorption peaks at -94±15 ppm, -73±15 ppm and -36±15 ppm. The modified titanium silicalite molecular sieve can be used in the aldol condensation reaction.

IPC Classes  ?

• B01J 29/89 - Silicates, aluminosilicates or borosilicates of titanium, zirconium or hafnium
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam
• C07C 67/343 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisationPreparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by change of size of the carbon skeleton by increase in the number of carbon atoms
• C07C 69/54 - Acrylic acid estersMethacrylic acid esters
• C01B 39/08 - Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements the aluminium atoms being wholly replaced

Abstract

A microwave heating system, comprising a container body (1). The container body (1) comprises at least one heating cavity (11); a microwave shielding element (15) is provided in the heating cavity (11); the microwave shielding element (15) divides the heating cavity (11) into a plurality of sub heating cavities; a microwave heating apparatus (3) and a heated carrier (2) capable of absorbing microwaves to generate heat are provided in each sub heating cavity; the microwave heating apparatus (3) is arranged on the side wall of the sub heating cavity; the microwave heating apparatus (3) comprises a dielectric radiator (33) made of a dielectric material; and the dielectric radiator (33) has a radiation section (331) located in the sub heating cavity and used for radiating the microwaves into the sub heating cavity so as to heat the heated carrier (2). The microwave heating system can effectively improve the uniformity of the microwaves heating a large-size heated carrier (2) and the microwave incident efficiency.

IPC Classes  ?

• B01J 19/12 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor employing electromagnetic waves
• H05B 6/64 - Heating using microwaves
• H05B 6/72 - Radiators or antennas

Abstract

A photocatalytic material, and a preparation method therefor and a use thereof. The preparation method for the photocatalytic material comprises the following steps: 1) providing a photocatalytic material precursor covered by a liquid film; and 2) irradiating rays having a wavelength of 200 nm or less to the photocatalytic material precursor to obtain the photocatalytic material. The photocatalytic material has the advantages of simple preparation method, significant increase of the response value to light having a long wavelength, and the like.

IPC Classes  ?

• B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
• B01J 27/24 - Nitrogen compounds
• B01J 23/60 - Platinum group metals with zinc, cadmium or mercury

Abstract

Disclosed is an unsupported bimetallic hydrogenation catalyst, its preparation and application thereof. The catalyst is composed of a complex formed by bonding a metal central atom or central ion with an organic ligand through a coordination bond, and has a schematic composition represented by formula (I): M1M2Oa[R(COO)x]b (I), in which M1 and M2 represent metals, R(COO)x represents an organic ligand, R represents the hydrocarbyl group of the organic ligand, COO represents the coordinating group of the organic ligand, x represents the number of coordinating groups in the organic ligand, a represents the molar ratio of oxygen atom linked to the metal via a non-coordination bond to the total amount of the metal, and b represents the molar ratio of the organic ligand to the total amount of the metal. When used for hydrogenation of hydrocarbons, the catalyst and composition thereof show high dispersibility in oil phase, high hydrogenation activity and high selectivity to target product.

IPC Classes  ?

• B01J 31/22 - Organic complexes
• B01J 37/04 - Mixing
• C10G 45/48 - Hydrogenation of the aromatic hydrocarbons characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof

Abstract

A ZSM-5 molecular sieve catalyst, a preparation method therefor and an application thereof are provided. In the catalyst, the ratio of the amount of skeleton aluminum located at the intersection of the straight pore channels and the sinusoidal pore channels to the amount of skeleton aluminum inside the straight pore channels and the sinusoidal pore channels is 1.4:1-10:1, the silica-alumina molar ratio SiO2/Al2O3 is 80-1500, and the microporous pore volume may account for 70% to 92% of the total pore volume. When used for producing propylene and ethylene by olefin catalytic cracking, the catalyst has characteristics of a low reaction hydrogen transfer index, a high stability, a high conversion rate of raw material olefin, and a high selectivity of products of propylene and ethylene.

IPC Classes  ?

• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 35/63 - Pore volume
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam

Abstract

A process for preparing succinic anhydride by hydrogenation of maleic anhydride includes the steps of: 1) mixing a maleic anhydride solution with hydrogen to obtain a first liquid phase feed; 2) carrying out a first hydrogenation reaction by passing the first liquid phase feed from bottom to top through fixed bed layer(s) of a first maleic anhydride hydrogenation catalyst arranged in a first reaction unit under first hydrogenation reaction conditions to obtain a first reaction effluent containing succinic anhydride; 3) mixing the first reaction effluent from the first reaction unit with make-up hydrogen to obtain a second liquid phase feed; and 4) carrying out a second hydrogenation reaction by passing the second liquid phase feed from bottom to top through fixed bed layer(s) of a second maleic anhydride hydrogenation catalyst arranged in a second reaction unit under second hydrogenation reaction conditions to obtain a second reaction effluent containing succinic anhydride.

IPC Classes  ?

• C07D 307/60 - Two oxygen atoms, e.g. succinic anhydride
• B01J 8/04 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
• B01J 21/04 - Alumina
• B01J 23/755 - Nickel
• B01J 35/30 - Catalysts, in general, characterised by their form or physical properties characterised by their physical properties

Abstract

A polypropylene microsphere and a preparation method therefor, a 3D printing raw material, and a use are provided. The polypropylene microsphere contains 0.2 wt %-10 wt % of a structural unit derived from ethylene and 90 wt %-99.8 wt % of a structural unit derived from propylene. A melting heat absorption curve of the polypropylene microsphere is obtained by means of a differential scanning calorimeter (DSC), and a half-peak width (Wm) of the melting heat absorption curve of the polypropylene microsphere is 4-10° C. The crystallization sequence distribution of the polypropylene microsphere is uniform, and when the polypropylene microsphere is used for 3D printing, 3D printing melting is uniform.

IPC Classes  ?

• C09D 123/14 - Copolymers of propene
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29K 23/00 - Use of polyalkenes as moulding material
• B29K 105/00 - Condition, form or state of moulded material
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers

Abstract

An annulus monitoring-based kick/loss monitoring system, comprising: an annulus monitoring assembly (107), configured to monitor annulus monitoring information at a fixed depth within a drilling annulus, wherein the annulus monitoring information comprises an annulus fluid velocity measurement value and/or fluid composition information of an annulus fluid; and a controller (101), coupled with the annulus monitoring assembly and configured to: receive the annulus monitoring information and mud logging data; determine drilling conditions associated with kick/loss monitoring; select a corresponding kick/loss monitoring model on the basis of the drilling conditions; determine a theoretical annulus fluid velocity value at a specified depth on the basis of the kick/loss monitoring model; determine whether the annulus fluid velocity measurement value falls within a predetermined range of the theoretical annulus fluid velocity value; and in response to the annulus fluid velocity measurement value deviating beyond the predetermined range of the theoretical annulus fluid velocity value, determine the presence of a kick or loss.

IPC Classes  ?

• E21B 47/103 - Locating fluid leaks, intrusions or movements using thermal measurements
• E21B 47/10 - Locating fluid leaks, intrusions or movements
• E21B 47/00 - Survey of boreholes or wells

Abstract

A catalytic cracking catalyst, on a dry basis, contains 10-35% by weight of a meso and macro pore aluminum oxide based on aluminum oxide, 5-30% by weight of an acidifying binder based on oxide, 2-20% by weight of a second binder based on oxide, 20-60% by weight of a zeolite, and 5-50% by weight of a clay. The meso and macro pore aluminum oxide is an aluminum oxide with a pseudo boehmite structure, which has a total pore volume of 0.5-2.0 mL/g, an average pore size of 5-30 nm, and a specific surface area of 250-450 m2/g. The catalytic cracking catalyst has a total pore volume not less than 0.200 mL/g. The volume of 2-100 nm meso and macro pores accounts for 70% or more of the total pore volume, while the volume of 4-50 nm mesoporous pores accounts for 60% or more of the total pore volume.

IPC Classes  ?

• B01J 29/08 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the faujasite type, e.g. type X or Y
• B01J 21/04 - Alumina
• B01J 21/16 - Clays or other mineral silicates
• B01J 35/63 - Pore volume
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 37/04 - Mixing
• B01J 37/08 - Heat treatment
• C10G 11/05 - Crystalline alumino-silicates, e.g. molecular sieves

Abstract

A method for obtaining elemental concentration and determining the formation density uses a tool having multiple dual-function detectors that can detect both neutrons and gamma rays simultaneously. The method includes emitting neutrons into the formation, detecting neutron and gamma ray signals from the formation and discriminating the neutron signal and the gamma ray signal, obtaining the space, time and energy dependent fluence rates for fast neutrons and thermal neutrons, obtaining gamma ray energy spectra from initial inelastic gamma rays and backscattered inelastic gamma rays from one or more detectors. The formation density can be calculated based on one or more ratios between the gamma ray count rates at the one or more detectors to the gamma ray count rate at the near detector.

IPC Classes  ?

• G01V 5/10 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
• E21B 49/08 - Obtaining fluid samples or testing fluids, in boreholes or wells

Abstract

The wind power generation apparatus has an acquisition unit, a wind turbine, a generator, an electric power storage unit and a controller. The acquisition unit is used acquires a wind power value. The controller selects, according to the wind power value, the wind turbine to perform the following tasks: when the wind power value is between a first threshold value and a second threshold value, the wind turbine only drives the generator to generate power; when the wind power value is greater than the second threshold value, the wind turbine simultaneously drives the generator and the electric power storage unit to charge; when the wind power value is less than the first threshold value, the wind turbine only drives the electric power storage unit to charge or drives the electric power storage unit to output induced electric energy to the outside.

IPC Classes  ?

• F03D 7/04 - Automatic controlRegulation
• F03D 9/11 - Combinations of wind motors with apparatus storing energy storing electrical energy
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator

Abstract

A device for measuring the amount of desorbed gas has a sample desorption tank; a water drain metering assembly that has a metering tube configured to display a liquid level height and receive gas desorbed from the sample desorption tank, the metering tube being connected to a draining and injecting assembly for draining or injecting water, a first pressure monitoring member for monitoring a liquid pressure in the metering tube, and a second pressure monitoring member for monitoring a gas pressure in the metering tube; a gas exhausting assembly that is in communication with the water drain metering assembly and configured to exhaust desorbed gas therein; and a control assembly for controlling the desorbed gas to enter the metering tube, controlling the draining and injecting assembly to drain water, controlling the gas exhausting assembly to exhaust gas, and controlling the draining and injecting assembly to inject water.

IPC Classes  ?

• G01N 7/14 - Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference

Abstract

91212, and an extractant mixture. The method of the present invention comprises the steps of: (1) providing a stream containing vinyltoluene and a saturated C9 aromatic hydrocarbon; and (2) introducing the stream and an extractant mixture into an extractive distillation tower for extractive distillation, so as to obtain an overhead fraction and a bottom fraction, wherein the extractant mixture comprises N,N-dimethylformamide and glycerol, the overhead fraction contains the saturated C9 aromatic hydrocarbon and N,N-dimethylformamide, and the bottom fraction contains vinyltoluene and glycerol. The method of the present invention can be used for separating vinyltoluene and a saturated C9 aromatic hydrocarbon from lightweight cracked C9 aromatic hydrocarbons, thereby realizing a high yield and a high purity.

IPC Classes  ?

• C07C 7/10 - Purification, separation or stabilisation of hydrocarbonsUse of additives by extraction, i.e. purification or separation of liquid hydrocarbons with the aid of liquids
• C07C 7/08 - Purification, separation or stabilisation of hydrocarbonsUse of additives by distillation with the aid of auxiliary compounds by extractive distillation
• C07C 15/02 - Monocyclic hydrocarbons

Abstract

Provided in the present invention is a method for determining the content of a target component in a gas mixture by means of Raman spectroscopy, comprising: performing Raman spectroscopy detection on a gas mixture to obtain a Raman spectrogram; selecting one characteristic peak from the Raman spectrogram as a reference peak, the component corresponding thereto being a reference component, and normalizing characteristic peaks in the Raman spectrogram relative to the reference peak, so as to obtain a relative Raman peak height of each characteristic peak; in combination with the Raman spectrogram of a pure target component, determining the peak position of the characteristic peak of each target component in the Raman spectrogram of the gas mixture; on the basis of the relative Raman peak height of the target component and a regression coefficient obtained on the basis of a training sample set of the gas mixture, determining the molar ratio or volume ratio of the target component to the reference component in the gas mixture; and, on the basis of the molar ratio or volume ratio of the target component to the reference component, determining the molar fraction or volume fraction of each target component in the gas mixture.

IPC Classes  ?

• G01N 21/65 - Raman scattering

Abstract

In seismic data, migration images and inverted models, interesting structures with sharp spatial variations such as faults, channels or caves are embedded in laterally smooth stratigraphic layers, coherent and non-coherent noises etc. One way to enhance these structures is to take advantage of the local strong contrast property and use Sobel filter. However, Sobel filter is a discrete differentiation operator which enhances the edges and may lead to drastic amplitude changes within one feature and add difficulties to interpretation. The method uses histogram equalization after Sobel filter which makes the amplitude of a feature much more homogenous and presents a much clearer image of faults or channels with little background noise.

IPC Classes  ?

• G01V 1/36 - Effecting static or dynamic corrections on records, e.g. correcting spreadCorrelating seismic signalsEliminating effects of unwanted energy
• G06T 7/13 - Edge detection

Abstract

123 33233; 0

IPC Classes  ?

• C08G 59/06 - Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols

Abstract

The present invention relates to the fields of high polymer materials and oil and gas exploitation, and disclosed are a curable resin composition and a use thereof, and a honeycomb resin product and a preparation method therefor and a use thereof. The curable resin composition comprises a component A and a component B; the component A and the component B are each independently present; the component A comprises an aqueous thermosetting resin, a solvent-type thermosetting resin, an emulsifier, and water; the component B comprises a curing agent, and the curing agent is selected from modified nanosilica represented by formula I and/or a bisphenol novolac resin; in the formula I, A is a structural unit from an anhydride-based compound, and B is a structural unit from a polyamino compound; the bisphenol novolac resin comprises a structural unit represented by formula II and a structural unit represented by formula III; and based on the total weight of the bisphenol novolac resin, the content of the structural unit represented by formula II is 0-100 wt%, and the content of the structural unit represented by formula III is 0-100 wt%.

IPC Classes  ?

• C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
• C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
• C09K 8/94 - Foams
• C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used

Abstract

A composite oxide contains 60-95 wt % of aluminum oxide and 5-40 wt % of titanium dioxide. The specific surface area of the composite oxide determined by means of BET method is expressed as X m2/g. The average pore diameter of the composite oxide determined by means of nitrogen adsorption isothermal curve method is expressed as Y nm. The ratio of X to Y is 5-30. By means of the determination of X-ray diffraction method, titanium dioxide in an anatase crystalline phase in the composite oxide accounts for 95-100 wt % of the total titanium dioxide. X is in the range of 50-200, preferably X is in the range of 60-180, more preferably in the range of 80-150, and Y is in the range of 5-25 nm. A hydrogenation catalyst that contains the composite oxide shows a high vinyl acetylene conversion rate and a high 1,3-butadiene selectivity.

IPC Classes  ?

• B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
• B01J 6/00 - CalciningFusing
• B01J 21/04 - Alumina
• B01J 23/755 - Nickel
• B01J 35/61 - Surface area
• B01J 35/64 - Pore diameter
• B01J 37/04 - Mixing
• B01J 37/06 - Washing
• B01J 37/08 - Heat treatment
• C07C 5/08 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds
• C07C 11/167 - 1,3-Butadiene

Abstract

A monolithic catalytic material and a monolithic catalyst, a preparation method therefor and use thereof, and a catalytic oxidation method. The monolithic catalytic material comprises a structured support and a modified alumina coating distributed on the structured support. The modified alumina coating comprises an alumina-containing coating and a manganese-cobalt composite oxide supported on the surface of the alumina-containing coating. The monolithic catalytic material has better catalytic activity.

IPC Classes  ?

• B01J 23/89 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with noble metals
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/03 - PrecipitationCo-precipitation

Abstract

A phase change fracturing method. The phase change fracturing method comprises: injecting a phase change material liquid into a stratum, wherein the phase change material liquid undergoes phase change under the stratum condition to form a honeycomb solid-phase proppant, thereby completing phase change fracturing. According to the fracturing method, the phase change material liquid is injected into the stratum, and the phase change material liquid undergoes phase change to form the honeycomb solid-phase proppant, such that fracturing is implemented without additionally adding any proppant. Moreover, the formed honeycomb solid-phase proppant has high compressive strength, low deformation, and excellent flow conductivity.

IPC Classes  ?

• E21B 43/267 - Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
• C09K 8/68 - Compositions based on water or polar solvents containing organic compounds

Abstract

A top drive control system based on bi-directional transmission, relating to the technical field of petroleum drilling. The system comprises: a power-receiving end, a coupler, and a power-transmitting end. In the coupled power supply process, the power-transmitting end inverts first direct current to alternating current, and transmits the alternating current to the power-receiving end by means of the coupler; and the power-receiving end rectifies the alternating current to obtain second direct current, so as to supply power to sensors, located at the lower portion of a top drive rotating head, of a hydraulic elevator and a drilling elevator link. In the coupled communication process, the power-receiving end modulates acquired sensor data of the sensors into modulated signals, and transmits the modulated signals to the power-transmitting end by means of the coupler. By means of coupled power supply, power is supplied to the sensors mounted at the lower portion of the top drive rotating head, and by means of coupled communication, signals of the sensors at the lower portion of the rotating head are transmitted to a top drive electrical control house, thereby achieving stable power supply to the sensors and reliable transmission of signals.

IPC Classes  ?

• E21B 3/02 - Surface drives for rotary drilling

Abstract

Process for producing phenol, cresol and xylenes from a coal-derived feed are described. The processes combine dealkylation of alkylphenols from coal derived liquids followed by benzene and/or toluene transalkylation to reduce the production of non-ideal alkylbenzenes and reduce the usage of benzene/toluene. Alkylphenols from the coal derived liquids are converted in a dealkylation reaction zone comprising a dealkylation reactor to make phenol. The unconverted alkylphenols and an aromatic compound, such as benzene or toluene, are fed to a transalkylation reaction zone comprising a transalkylation reactor to make more phenol. Cresols and xylenes can also be produced.

IPC Classes  ?

• C07C 37/50 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms
• C07C 6/12 - Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond of exclusively hydrocarbons containing a six-membered aromatic ring
• C07C 37/48 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by exchange of hydrocarbon groups which may be substituted, from other compounds, e.g. transalkylation
• C07C 37/68 - SeparationPurificationStabilisationUse of additives

Abstract

A flame arrester structure, comprising: a housing (1) provided with a pressure relief intake end (11), a pressure relief exhaust end (12) and a chamber (13) connecting the pressure relief intake end and the pressure relief exhaust end; a fire resistant structure arranged at the pressure relief exhaust end, the fire resistant structure comprising a plurality of fire resistant layers (2) successively arranged at intervals in the axial direction of the pressure relief exhaust end; and a flow guide structure arranged inside the housing, located upstream of the fire resistant structure in the flowing direction of a pressure relief airflow inside the housing, and used for dividing the pressure relief airflow inside the housing into multiple regional airflows that flow towards different regions of the fire resistant structure. When accidents such as fire occur in pressure relief positions of storage tanks of petrochemical devices, the flame arrester structure can provide long-duration fire resistance protection, thus preventing the accidents from further escalating and allowing more readiness time for emergency rescue.

IPC Classes  ?

• A62C 4/00 - Flame traps allowing passage of gas but not of flame or explosion wave
• A62C 3/06 - Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products

Abstract

The present invention belongs to the technical field of fine chemical engineering, and specifically relates to a method for producing diphenylamine. The method comprises: in the presence of an olefin, allowing aniline to come into contact with a catalyst, and performing a condensation reaction, wherein therea re 2-4 carbon atoms in the olefin. By means of introducing an olefin into a reaction system, the method for producing diphenylamine provided in the present invention can effectively improve the conversion rate of aniline and the stability of the reaction, where the conversion rate of aniline can reach a maximum of 40.2 mol% while maintaining relatively high selectivity.

IPC Classes  ?

• C07C 209/62 - Preparation of compounds containing amino groups bound to a carbon skeleton by cleaving carbon-to-nitrogen, sulfur-to-nitrogen, or phosphorus-to-nitrogen bonds, e.g. hydrolysis of amides, N-dealkylation of amines or quaternary ammonium compounds
• C07C 209/02 - Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of hydrogen atoms by amino groups
• C07C 209/16 - Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups with formation of amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings
• C07C 211/55 - Diphenylamines
• C07C 211/06 - Monoamines containing only n- or iso-propyl groups
• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups

Abstract

A method for determining a near-critical region of impurity-containing carbon dioxide transported via a pipeline, comprising: on the basis of the composition of impurity-containing carbon dioxide transported via a pipeline, calculating the critical temperature and critical pressure of the impurity-containing carbon dioxide, and on the basis of the maximum working temperature and maximum working pressure of the pipeline, determining a supercritical pipeline transportation temperature range and a supercritical pipeline transportation pressure range; within the supercritical pipeline transportation temperature range and the supercritical pipeline transportation pressure range, calculating the physical property parameters of the impurity-containing carbon dioxide; respectively determining the temperature range of drastic change of the physical property parameters under a constant pressure condition and the pressure range of drastic change of the physical property parameters under a constant temperature condition, and recording the temperature range and the pressure range as a first range and a second range; and on the basis of the first range and the second range, obtaining a near-critical region corresponding to the impurity-containing carbon dioxide transported via the pipeline.

IPC Classes  ?

• F17D 3/01 - Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
• F17D 3/00 - Arrangements for supervising or controlling working operations
• F17D 5/00 - Protection or supervision of installations
• F17D 1/02 - Pipe-line systems for gases or vapours

Abstract

The present invention belongs to the technical field of fine chemical engineering, and particularly relates to a method for co-producing diphenylamine and quinolone. The method comprises: subjecting aniline and a catalyst to a contact reaction in the presence of propylene, so as to obtain a reaction product containing diphenylamine and quinoline. In the method provided in the present invention, by introducing propylene into a reaction system, diphenylamine and quinoline can be co-produced, the conversion rate of aniline is high, and the total selectivity of the diphenylamine and quinoline is high.

IPC Classes  ?

• C07C 209/62 - Preparation of compounds containing amino groups bound to a carbon skeleton by cleaving carbon-to-nitrogen, sulfur-to-nitrogen, or phosphorus-to-nitrogen bonds, e.g. hydrolysis of amides, N-dealkylation of amines or quaternary ammonium compounds
• C07C 209/60 - Preparation of compounds containing amino groups bound to a carbon skeleton by condensation or addition reactions, e.g. Mannich reaction, addition of ammonia or amines to alkenes or to alkynes or addition of compounds containing an active hydrogen atom to Schiff's bases, quinone imines, or aziranes
• C07C 211/55 - Diphenylamines
• C07D 215/00 - Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems

Abstract

A modified molecular sieve and a preparation method therefor, a catalyst and the use thereof, and a method for synthesizing diphenylamine from aniline. The modified molecular sieve comprises a β molecular sieve and an auxiliary component, and the auxiliary component is selected from at least one alkali metal. The indicative constant k of the modified molecular sieve is not less than 100. The catalyst prepared from the modified molecular sieve has a relatively high diphenylamine selectivity and a longer one-way operation period.

IPC Classes  ?

• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
• C07C 211/55 - Diphenylamines

Abstract

An approach for calibrating prestack seismic inversion is provided. This method includes selecting various features from inverted elastic properties to generate reservoir properties; fully connected neural network models are used to learn the mapping between the features and ground truth data at well locations; and the prediction is applied to generate one or more final models for the reservoir characterization of the whole survey region.

IPC Classes  ?

• G01V 1/50 - Analysing data
• E21B 47/00 - Survey of boreholes or wells
• G01V 1/20 - Arrangements of receiving elements, e.g. geophone pattern
• G01V 1/30 - Analysis
• G06F 18/20 - Analysing
• G06N 3/02 - Neural networks

Abstract

A polyacrylonitrile fiber pre-oxidized fiber, a preparation method therefor and the use thereof. The pre-oxidized fiber comprises a core part and a skin part wrapping the core part, wherein the characteristic tensile parameter of the polyacrylonitrile pre-oxidized fiber is 475.0-580.0 cN/μm. Polyacrylonitrile-based carbon fibers prepared from the polyacrylonitrile pre-oxidized fibers reduce or eliminate chemical defects and structural defects, thereby improving the mechanical properties of carbon fibers.

IPC Classes  ?

• D01F 9/22 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles

Abstract

The present invention relates to a high-molecular-weight polymer monofilament with an ultra-low residual solvent content, and a manufacturing method therefor and the use thereof. The method for manufacturing a high-molecular-weight polymer monofilament of the present invention comprises exposing a protofilament comprising a high-molecular-weight polymer and a solvent to the following environmental atmosphere: the environmental atmosphere has an elevated temperature, and the concentration of the solvent in the environmental atmosphere is 50 vol% or higher, based on the total volume of the environmental atmosphere being 100 vol%. The high-molecular-weight polymer monofilament of the present invention has the characteristic of an ultra-low residual solvent content, and is particularly suitable for use in the manufacture of medical products.

IPC Classes  ?

• D01D 5/04 - Dry spinning methods

Abstract

The invention relates to the technical field of membrane separation, and discloses a hollow fiber membrane and preparation method and use thereof. The hollow fiber membrane includes a support, a selective layer, and a transition layer between the support and the selective layer, wherein at least a portion of the transition layer is embedded in the support. The hollow fiber membrane has a high selectivity and good mechanical properties.

IPC Classes  ?

• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• B01D 53/00 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
• B01D 53/047 - Pressure swing adsorption
• B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 69/08 - Hollow fibre membranes
• B01D 69/10 - Supported membranesMembrane supports
• B01D 71/62 - Polycondensates having nitrogen-containing heterocyclic rings in the main chain
• C01B 23/00 - Noble gasesCompounds thereof

Abstract

A method for estimating source wavelet for seismic survey includes multiple steps. First, seismic data are collected using seismic data recording sensors and well log data are collected using a well logging tool in a well site in a survey region. The seismic data and the well log data are stored and processed in a computer system. The time-migrated seismic data thus collected and processed is the observed data. The well log data is processed to obtain one or more earth models that represent one or more formation properties; reflectivity modeling is performed to obtain a reflectivity, a band pass filter and time-migrated reflectivity to produce a band-limited reflectivity; the band-limited reflectivity is cross-correlated with the observed data to obtain a weight; and inversion is performed to obtain a source wavelet based on the weight, the reflectivity, and the observed data.

IPC Classes  ?

• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection
• G01V 1/50 - Analysing data
• G01V 11/00 - Prospecting or detecting by methods combining techniques covered by two or more of main groups

Abstract

Cu/M2+M3+oxide or CuO/M2+M3+oxide catalysts have been developed for use in producing isobutanol in propanol-methanol, ethanol-methanol and propanol/ethanol mixture-methanol Guerbet reactions. The catal sts can also be used in makin n-butanol in ethanol-ethanol reactions. The Cu/M2+M3+oxide or CuO/M2M3oxide catalyst has an average Cu or CuO particle size greater than or equal to 20 nm. M2+may comprise divalent magnesium, calcium, strontium, barium, zinc, or combinations thereof. M3+ may comprise trivalent aluminum, gallium, chromium, or combinations thereof. Catalysts, methods of making the catalysts, and methods of using the catalysts are described.

IPC Classes  ?

• B01J 35/40 - Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
• B01J 35/45 - Nanoparticles
• B01J 35/30 - Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
• B01J 23/78 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with alkali- or alkaline earth metals or beryllium
• B01J 23/825 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with gallium, indium or thallium
• B01J 23/80 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with zinc, cadmium or mercury
• B01J 23/86 - Chromium
• C07C 29/34 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of hydroxy groups by condensation involving hydroxy groups or the mineral ester groups derived therefrom, e.g. Guerbet reaction
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/03 - PrecipitationCo-precipitation
• B01J 37/08 - Heat treatment
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam
• B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
• B01J 21/04 - Alumina
• B01J 21/10 - MagnesiumOxides or hydroxides thereof

Abstract

An approach for calibrating prestack seismic inversion is provided. This method includes selecting various features from inverted elastic properties to generate reservoir properties; fully connected neural network models are used to learn the mapping between the features and ground truth data at well locations; and the prediction is applied to generate one or more final models for the reservoir characterization of the whole survey region.

IPC Classes  ?

• G01V 13/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups
• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection
• G01V 1/30 - Analysis

Abstract

An interconnectable downhole instrument package has a downhole instrument disposed in a pressure housing; a male connector assembly connecting to a first end of the downhole instrument; and a female connector assembly connecting to a second end of the downhole instrument. The male connector assembly has a first housing and a male rotatable connector that are connected together, while the female connector assembly has a second housing and a female rotatable connector. The second housing is adapted to receive the female rotatable connector.

IPC Classes  ?

• E21B 17/02 - CouplingsJoints
• E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
• E21B 47/06 - Measuring temperature or pressure