Process The present invention relates to operation of polymerisation processes, and in particular provides a process for analysing the liquid phase of a slurry from a reactor for the slurry phase polymerisation of one or more olefins to produce a polyolefin, which process comprises: a. Polymerising one or more olefins in the reactor to produce a polyolefin in the form of a slurry, b. Withdrawing slurry from the reactor through one or more product withdrawal lines, the rate of slurry withdrawal in each product withdrawal line being equivalent to at least 5 tonnes/hour. c. Separately withdrawing a sample of the slurry from the reactor through a sample line, wherein i. The sample line withdraws the slurry from the reactor through a sample line inlet located on the reactor, ii. Slurry is withdrawn through a sampling valve on the sample line, wherein the volume, V, of the sample line from the sample line inlet to the valve is less than 0.1 m3, iii. Slurry is withdrawn through the sample line at a rate which is equivalent to at least 50 kg/hr but below 5 tonnes/hr, wherein the sample of withdrawn slurry is passed from the sample line to a flash vessel to flash the liquid phase to form a gaseous phase and a portion of the gaseous phase is passed to an analyser.
A film oriented in at least the machine direction is described which comprises a polyethylene composition having the following properties: a density of 955-965 kg/m3; a melt index MI2 of 0.1-2 g/lO min; a G′(G″=3000) of 500-1700 Pa; a Mz/G′(G″=3000) at least 500 Da/Pa. The film can form a layer in a multilayer film, which made in turn be made into articles such as stand-up pouches.
B29C 55/00 - Shaping by stretching, e.g. drawing through a dieApparatus therefor
B29C 55/06 - Shaping by stretching, e.g. drawing through a dieApparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
B29K 23/00 - Use of polyalkenes as moulding material
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemical products for industry; Chemical products for
industry, namely chemical products obtained from organic raw
materials; phenol for industrial use; acetone; cumene;
alpha-methylstyrene; chemical catalysts.
The present invention provides a process for the production of a polyolefin, which process comprises: a. Reacting one or more olefins in a polymerisation reactor to produce a polyolefin, b. Withdrawing a polymerisation effluent stream comprising polyolefin solids, c. Passing the effluent to a first degassing vessel in which the polyolefins solids are degassed, said degassing vessel operating at a pressure, P 1, d. Opening a solids inlet of a connecting vessel and passing the polyolefin solids from the first degassing vessel to the connecting vessel via the solids inlet and until there is collected in the connecting vessel a volume of polyolefin solids, and wherein, once the volume of polyolefin solids has been collected: i. the solids inlet of the connecting vessel is closed, ii. the pressure in the connecting vessel is reduced to a pressure, P2, via a vent line of the connecting vessel, iii. after the pressure is reduced, a solids outlet of the connecting vessel is opened and the polyolefin solids are passed to a second degassing vessel via the solids outlet, and iv. after passing the polyolefin solids to the second degassing vessel, the solids outlet is closed, e. Degassing the polyolefin solids in the second degassing vessel, the second degassing vessel operating at a pressure, P3, characterised in that i. the volume of polyolefin solids collected in step (d) prior to steps (i)-(iv) is at least 50% of the volume of the connecting vessel, ii. P2 is at least 20% lower than the pressure, Pl, iii. the connecting vessel has a cylindrical body, with a top section connected to the top of the cylindrical body and a bottom section connected to the bottom of the cylindrical body, wherein the cylindrical body has an H/D of less than 2, H being the height of the vessel and D being the diameter, and iv. the vent line is located on the top section of the connecting vessel or on the upper part of the cylindrical body of the connecting vessel, but above the collected volume of solids.
The present invention relates to a process for the production of polyolefin pellets in an extruder, and in particular provides a process for the production of polyolefin pellets which comprises i) passing polyolefin to a feed hopper of an extruder, ii) passing the polyolefin from the feed hopper to the extruder, and iii) pelletising the polyolefin in the extruder, characterised in that the polyolefin is contacted with water and oxygen prior to pelletising, and that the contact with oxygen takes place by contacting the polyolefin with a gas mixture comprising oxygen in the feed hopper of the extruder, the amount of oxygen being less than 500 ppm by weight relative to the polyolefin, the pressure in the feed hopper being less than 0.05 MPa and the residence time of the polyolefin in the feed hopper being less than 0.2 hours.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29B 9/12 - Making granules characterised by structure or composition
C08J 3/00 - Processes of treating or compounding macromolecular substances
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
212 12 alkyl groups, in order to form a silica supported organomagnesium composition, (2) reacting at least one magnesium halide with at least one organic oxygen- comprising compound of titanium to form a Mg-Ti liquid complex, and contacting the silica supported organomagnesium composition with the formed Mg-Ti liquid complex, and (3) reacting the modified supported organomagnesium composition of step (2) with a titanium halide.
The present invention relates to methods of cracking hydrocarbon feeds, and in particular provides a method for transitioning from a first process cracking a first hydrocarbon feed to a second process cracking a second hydrocarbon feed, wherein: a) The first process comprises a. passing the first hydrocarbon feed to a reactant tube which reactant tube comprises a first zone and a second zone, downstream of the first zone, each zone comprising one or more electrically heated sections. b. heating the first hydrocarbon feed in the first zone in the one or more electrically heated sections to vaporise the first hydrocarbon feed, and c. heating the vaporised first hydrocarbon feed in the second zone in the one or more electrically heated sections to crack the first hydrocarbon feed, wherein the number of heated sections in the first zone is n1, the number of heated sections in the second zone is n2. and n1 + n2 is equal to n, where n it the total number of heated sections. b) The transition comprises stopping the feeding of the first hydrocarbon feed to the reactant tube and starting the feeding of the second hydrocarbon feed to the same reactant tube, and c) The second process comprises a. passing the second hydrocarbon feed to the reactant tube which reactant tube comprises a first zone and a second zone, downstream of the first zone, each zone comprising one or more electrically heated sections, b. heating the second hydrocarbon feed in the first zone in the one or more electrically heated sections to vaporise the second hydrocarbon feed, and c. heating the vaporised second hydrocarbon feed in the second zone in the one or more electrically heated sections to crack the second hydrocarbon feed. wherein the number of heated sections in the first zone is ml, the number of heated sections in the second zone is m2, and m1 + m2 is equal to n, and wherein the second hydrocarbon feed is different to the first hydrocarbon feed, m1 ≠ n1 and m2 ≠ n2.
The present invention relates to methods of cracking hydrocarbon feeds, and in particular provides a method for cracking a hydrocarbon feed, wherein the method comprises a. passing a hydrocarbon feed to a cracking zone of a reactant tube which cracking zone comprises two or more electrically heated sections in series, and b. heating the hydrocarbon feed in the two or more electrically heated sections of the cracking zone to crack the hydrocarbon feed. wherein the heating applied to the last heated section of the cracking zone is less than the heating applied to one or more preceding heated sections of the cracking zone.
The present invention relates to methods of cracking hydrocarbon feeds, and in particular provides a method for cracking of a hydrocarbon feed, which method comprises a) passing the hydrocarbon feed to a reactant tube which reactant tube comprises a first zone and a second zone, downstream of the first zone, each zone comprising one or more electrically heated sections, b) heating the hydrocarbon feed in the first zone in the one or more electrically heated sections to vaporise the hydrocarbon feed, and c) heating the vaporised hydrocarbon feed in the second zone in the one or more electrically heated sections to crack the hydrocarbon feed, characterised in that the hydrocarbon feed is analysed, and the electrical energy provided to the one or more electrically heated sections in the first zone and/or the electrical energy provided to the one or more electrically heated sections in the second zone are controlled based on the results of the analysis.
This invention relates to components useful in propylene polymerization catalysts, and in particular provides a solid, hydrocarbon-insoluble, catalyst component containing magnesium, titanium, and halogen and further comprising a modifier compound with a structure (1), wherein : - R1is selected from H aryl or alkyl groups having 1 to 10 carbon atoms, - R2is selected from alkyl groups having 1 to 10 carbon atoms, - R3to R6are each independently selected from H, alkylaryl, aryl or alkyl groups having 1 to 10 carbon atoms and halogens, but with the proviso that at least one of R4and R5is H, - any alkylaryl, aryl or alkyl groups optionally comprising one or more heteroatoms and/or optionally wherein R3and R4or R5and R6 are joined to form a cyclic group.
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemical products for industry; Chemical products for industry, namely chemical products obtained from organic raw materials; phenol for industrial use; acetone; cumene; alpha-methylstyrene; chemical catalysts.
A composition comprising a polypropylene copolymer containing 0.5-7 mol % ethylene comonomer an having an MFR of 5-50 g/10 min and a relative proportion of isolated and block comonomer sequences in the polypropylene (I(E)) in the range of 5-40 is disclosed, wherein I(E) is defined as I(E)=fPEP/((fEEE+fPEE+fPEP))*100 in which I(E) is the relative content of isolated to block ethylene sequences (in %); fPEP is the mol fraction of propylene/ethylene/propylene sequences (PEP) in the sample; fPEE is the mol fraction of propylene/ethylene/ethylene sequences (PEE) and of ethylene/ethylene/propylene sequences (EEP) in the sample; and fEEE is the mol fraction of ethylene/ethylene/ethylene sequences (EEE) in the sample, all sequence concentrations being based on a statistical triad analysis of 13C-NMR data. The composition preferably comprises a blend of a propylene homopolymer and a propylene-ethylene copolymer, and the propylene-ethylene copolymer is preferably a polypropylene post-consumer resin (PCR).
A composition is disclosed comprising a blend of 90-99 wt %, based on the blend, of a random propylene copolymer having an melt flow rate (MFR 230° C./2.16 kg) of 15-40 g/10 min and containing 1.5-2.5 wt % ethylene, and 1-10 wt %, based on the blend, of an ethylene based plastomer having a density of 860-915 kg/m3 and an MI2 (190° C./2.16 kg) of 0.5 to 25 g/10 min. The blend preferably has an MFR of 15-35 g/10 min and a flexural modulus of 700-1300 MPa.
Polyethylene composition has a density of 949-955 kg/m 3 and a melt index MI2 between 15 and 40 g/10 min, and comprises a low molecular weight fraction (A) and a high molecular weight fraction (B), wherein the amount of (A) is 52-58 wt % based on the weight of (A)+(B), and the melt index MI2 of (A) is 200-600 g/10 min. Injection moulded articles, preferably caps or closures, made from the composition are also described.
12abcdefgxx. The invention also relates to a process for the ammoxidation of an olefin comprising reacting in the vapor phase at an elevated temperature and pressure the olefin with a molecular oxygen containing gas and ammonia in the presence of the catalyst composition.
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
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemical products for industry; chemical products for
industry, namely, chemical products based on biological raw
materials; chemical catalysts; acrylonitrile; acetonitrile.
112525666 are each independently selected from H and alkyl groups having 1 to 4 carbon atoms, and the alkyl groups optionally comprising one or more heteroatoms.
2488 α-olefin and having an MFR of 2 - 50 g/10min; (D) 0-10wt% of other additives, amounts being based on the total weight of the composition, wherein the composition has an MFR of from 3 to 15 g/10min.
22-O-R1, C(=O)-R1and C(=O)-O-R1and Q2 is selected from R2and O-R2; R1to R5 each being independently selected from H, alkyl, aryl, allyl, alkaryl, arylalkyl groups, optionally comprising one or more heteroatoms.
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (France)
THE UNIVERSITE CLAUDE BERNARD LYON 1 (France)
ECOLE SUPERIEURE DE CHIMIE-PHYSIQUE-ELECTRONIQUE DE LYON (France)
Inventor
Boisson, Christophe
Chiari, Vittoria
Pannier, Gaelle
Taoufik, Mostafa
Abstract
The present invention relates to a method for preparing a catalyst, and in particular provides a method for preparing a catalyst suitable for the polymerisation of ethylene and/or propylene, said catalyst comprising a compound of yttrium, neodymium or scandium supported on a silica support, and wherein the method comprises: a) Treating a silica support by heating at a temperature of at least 550° C., b) Contacting the treated silica support with a complex of the following formula: DmMX1X2R wherein M is selected from Y, Sc and Nd, R is a hydrocarbyl group, X1 and X2 are anionic groups, D is a neutral donor group, and m is 0 or greater.
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
(1) Produits chimiques pour l'industrie; produits chimiques pour l'industrie, à savoir, produits chimiques à base de matières premières biologiques; catalyseurs chimiques; acrylonitrile; acétonitrile.
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemicals for use in industry, namely, acrylonitrile and acetonitrile; chemicals for industry, namely, chemicals based on biological and circular raw materials; chemical catalysts being chemical biocatalysts; all for use in the manufacture of plastics, fibre, acrylamide, rubber, and pharmaceuticals
The present invention relates to a filtration device, and in particular said filtration device comprising: a. a first part comprising a frame of a generally cylindrical external profile, b. a connection means suitable to attach the filtration device inside a reactor, c. two of more baffles protruding inwardly from the frame, d. at least one set of filters located on the first part, each set of said filters being fluidly connected to a header pipe. The present invention also relates to a reactor comprising the filtration device and to a process for filtration using the filtration device.
B01D 29/33 - Self-supporting filtering elements arranged for inward flow filtration
B01D 29/52 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
B01D 29/86 - Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
B01J 8/10 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles
B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
B01D 29/96 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor in which the filtering elements are moved between filtering operationsParticular measures for removing or replacing the filtering elementsTransport systems for filters
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemical products for industry; chemical products for
industry, namely, chemical products based on biological raw
materials; chemical catalysts; acrylonitrile; acetonitrile.
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemicals for use in industry, namely, acrylonitrile, acetonitrile; chemicals for industry, namely, chemicals based on biological and/or circular raw materials; chemical catalysts being chemical biocatalysts; acrylonitrile; acetonitrile
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
(1) Produits chimiques pour l'industrie; produits chimiques pour l'industrie, à savoir, produits chimiques à base de matières premières biologiques; catalyseurs chimiques; acrylonitrile; acétonitrile.
A film oriented in at least the machine direction is described which comprises a polyethylene composition having the following properties: a density of 955 - 965 kg/m3; a melt index MI2 of 0.1 - 2 g/lOmin; a G'(G"=3000) of 500-1700 Pa; a Mz/ G'(G"=3000) at least 500 Da/Pa. The film can form a layer in a multilayer film, which made in turn be made into articles such as stand-up pouches.
B29C 55/00 - Shaping by stretching, e.g. drawing through a dieApparatus therefor
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
A film oriented in at least the machine direction is described which comprises a polyethylene composition having the following properties: a density of 955 - 965 kg/m322 of 0.1 - 2 g/lOmin; a G'(G"=3000) of 500-1700 Pa; a Mz/ G'(G"=3000) at least 500 Da/Pa. The film can form a layer in a multilayer film, which made in turn be made into articles such as stand-up pouches.
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemical products for industry; chemical products for
industry, namely, chemical products derived from organic raw
materials; phenol for industrial use; acetone; cumene;
alpha-Methylstyrene; chemical catalysts.
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemicals for industry; chemicals for industry, namely, chemicals derived from organic raw materials and/or circular materials; phenol for industrial use; acetone; cumene; alpha-Methylstyrene being chemicals for use in science and industry; chemical catalysts being biochemical catalysts
Polyethylene composition has a density of 949 – 955 kg/m32 22 of (A) is 200 - 600 g/10 min. Injection moulded articles, preferably caps or closures, made from the composition are also described.
B65D 41/00 - Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge apertureProtective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
A composition is disclosed comprising a blend of 90 - 99 wt%, based on the blend, of a random propylene copolymer having an melt flow rate (MFR 230°C/2.16kg) of 15 - 40 g/10min and containing 1.5 ? 2.5 wt% ethylene, and 1 - 10 wt%, based on the blend, of an ethylene based plastomer having a density of 860 - 915 kg/m3 and an MI2 (190°C/2.16kg) of 0.5 to 25 g/10 min. The blend preferably has an MFR of 15-35 g/10min and a flexural modulus of 700-1300 MPa.
Polyethylene composition has a density of 949 ? 955 kg/m3 and a melt index MI2 between 15 and 40 g/10 min, and comprises a low molecular weight fraction (A) and a high molecular weight fraction (B), wherein the amount of (A) is 52 - 58wt% based on the weight of (A) + (B), and the melt index MI2 of (A) is 200 - 600 g/10 min. Injection moulded articles, preferably caps or closures, made from the composition are also described.
B65D 41/00 - Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge apertureProtective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
A composition is disclosed comprising a blend of 90 - 99 wt%, based on the blend, of a random propylene copolymer having an melt flow rate (MFR 230°C/2.16kg) of 15 - 40 g/10min and containing 1.5 – 2.5 wt% ethylene, and 1 - 10 wt%, based on the blend, of an ethylene based plastomer having a density of 860 - 915 kg/m322 (190°C/2.16kg) of 0.5 to 25 g/10 min. The blend preferably has an MFR of 15-35 g/10min and a flexural modulus of 700-1300 MPa.
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Chemicals; chemical products for use in industry and
manufacture; artificial and synthetic resins; unprocessed
plastics; plasticizers; ethylene, propylene, butadiene,
styrene; polyethylene, polypropylene, polybutenes,
polystyrene; nitriles, acetonitrile, hydrogen cyanide,
acetone cyanohydrin, oxazole, butanediols; oxygenated
solvents, ethanol, glycol ethers and esters;
polyalphaolefins; silica for use as polyolefin catalysts and
carriers; linear alpha olefins; detergents and degreasing
agents, polyolefins and derivatives thereof all being
chemical substances for use in manufacture; chemical
compositions prepared from polyolefins and derivates thereof
all for use in the manufacture of plastics and articles made
from plastics; synthetic fluids for industrial use namely
chemical petroleum additives, hydraulic fluids, heat
transfer fluids, refrigerant fluids, and chemicals for use
in oil drilling processes; fire extinguishing compositions;
tempering and soldering preparations; chemical substances
for preserving foodstuffs; tanning substances; adhesives
used in industry; chemical compositions prepared from the
aforesaid goods all for use in the manufacture of plastics
and articles made from plastics. Plastics and synthetic resins in semi-processed form;
plastic in sheet, rod, film or tube form; plastics in fibre
form (not for textile use); compounds of plastics
(semi-processed); compounds of synthetic resins
(semi-processed); plastic components and assemblies in
moulded form for use in manufacture; packing, stopping and
insulating materials; rubber, gutta-percha, gum, asbestos,
mica; plastics in extruded form for use in manufacture or
packing; flexible pipes, not of metal; plastics in extruded
form; adhesive sealants. Scientific and technological services; product research
services; design services; industrial design; technological
and industrial analysis services; design and development of
polymerization technologies; design and development of
industrial catalysts for use in polyethylene and
polypropylene processes; design and development of computer
hardware and software; engineering services; surveying
services; exploration services; geological surveys;
geological services; environmental research and advice
services; advisory and consultancy services relating to
process technology; providing technological information,
namely providing liaison services to facilitate the exchange
of technical and technological information; support services
in the form of technical consultancy and advisory services
by providing technical and technological assistance to
licensees and franchisees; preparation of engineering
drawings, technical documentation and reports; analytical
services relating to computers; commissioning [testing and
inspection] of plant, machinery and apparatus; advice,
information and consultancy services relating to all the
aforesaid services.
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (France)
THE UNIVERSITE CLAUDE BERNARD LYON 1 (France)
ECOLE SUPERIEURE DE CHIMIE-PHYSIQUE-ELECTRONIQUE DE LYON (France)
Inventor
Boisson, Christophe
Chiari, Vittoria
Pannier, Gaelle
Taoufik, Mostafa
Abstract
mmMX1X2R wherein M is selected from Y, Sc and Nd, R is a hydrocarbyl group, X1and X2 are anionic groups, D is a neutral donor group, and m is 0 or greater.
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
Goods & Services
(1) Chemical products, substances and additives; chemical coatings for industry; artificial resins; catalysts; vinyl acetate; polymeric compounds for use in manufacture; raw polystyrene resins; chemical products in the form of gels; surfactants; silicates; unprocessed plastics.
(2) Plastics in extruded form for use in manufacture or packing operations; semi-processed plastics in the form of films; packing, stopping and insulating materials; synthetic resins and plastics in semi-processed form; semi-processed plastics in sheet, rod, film or tube form; fibers of plastics, other than for textile use; compounds of plastics in semi-processed form; semi-processed plastics; materials made from plastic films for use in manufacture; semi-processed goods made from plastic and plastic materials; parts and fittings for the aforesaid goods.
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Chemical products, substances and additives, namely, unprocessed polymers and polymeric additives for use in the manufacture of industrial products; chemical coatings, namely, industrial chemicals for the manufacture of packaging and wrapping; unprocessed artificial resins; catalysts for chemical and biochemical processes; vinyl acetate; polymeric compounds for use in manufacture of industrial products; raw artificial polystyrene resins; industrial chemicals in the form of gels for packaging and wrapping; non-ionic surfactants as raw materials for use in the manufacture of industrial polymer; silicates; unprocessed plastics Plastics in extruded form for use in further manufacture operations; semi-processed plastics in the form of films; packing and insulating materials; synthetic resins and plastics in semi-processed form; semi-processed plastics in sheet, rod, film or tube form; fibers of plastics, other than for textile use; compounds of plastics in semi-processed form; semi-processed plastics; packaging materials, namely, plastic films for use in commercial or industrial manufacture, namely, plastic sheets for use in the manufacture of packaging; semi-processed plastic, namely, sheeting, boards, rods, tubes and blocks for use in manufacturing
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
Goods & Services
(1) Chemical products, substances and additives; chemical coatings for industry; artificial resins; catalysts; vinyl acetate; polymeric compounds for use in manufacture; raw polystyrene resins; chemical products in the form of gels; surfactants; silicates; unprocessed plastics.
(2) Plastics in extruded form for use in manufacture or packing operations; semi-processed plastics in the form of films; packing, stopping and insulating materials; synthetic resins and plastics in semi-processed form; semi-processed plastics in sheet, rod, film or tube form; fibers of plastics, other than for textile use; compounds of plastics in semi-processed form; semi-processed plastics; materials made from plastic films for use in manufacture; semi-processed goods made from plastic and plastic materials; parts and fittings for the aforesaid goods.
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Chemical products, substances and additives, namely, unprocessed polymers and polymeric additives for use in the manufacture of industrial products; chemical coatings, namely, industrial chemicals for the manufacture of packaging and wrapping; unprocessed artificial resins; catalysts for chemical and biochemical processes; vinyl acetate; polymeric compounds for use in manufacture of industrial products; raw artificial polystyrene resins; industrial chemicals in the form of gels for packaging and wrapping; non-ionic surfactants as raw materials for use in the manufacture of industrial polymer; silicates; unprocessed plastics Plastics in extruded form for use in further manufacture operations; semi-processed plastics in the form of films; packing and insulating materials; synthetic resins and plastics in semi-processed form; semi-processed plastics in sheet, rod, film or tube form; fibers of plastics, other than for textile use; compounds of plastics in semi-processed form; semi-processed plastics; packaging materials, namely, plastic films for use in commercial or industrial manufacture, namely, plastic sheets for use in the manufacture of packaging; semi-processed plastic, namely, sheeting, boards, rods, tubes and blocks for use in manufacturing
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Chemicals used in industry other than the pharmaceutical and agrochemical industries, namely polyolefin catalysts; chemical preparations for use in industry and general industrial manufacture excluding the pharmaceutical and agrochemical industries, namely chemical preparations involving polyolefin catalysts; unprocessed artificial and synthetic resins; unprocessed plastics; plasticizers; ethylene, propylene, butadiene, styrene; unprocessed polyethylene resins, unprocessed polypropylene resins, polybutene being unprocessed polymers, unprocessed polystyrene resins; nitriles being cyanides, acetonitrile being industrial chemicals, hydrogen cyanide being industrial chemicals, acetone cyanohydrin being industrial chemicals, oxazole being industrial chemicals, Butanediols being industrial chemicals; oxygenated solvents being industrial chemicals, ethanol not used as a fuel, glycol ethers and esters for industrial purposes; polyalphaolefins being industrial chemicals; silica gel for use as polyolefin catalysts and carriers for use in industry other than the pharmaceutical and agrochemical industries; linear alpha olefins being industrial chemicals; detergents and degreasing preparations, polyolefins and derivatives thereof all being industrial chemicals for use in manufacture; industrial chemicals prepared from polyolefins and derivates thereof all for use in the manufacture of plastics and articles made from plastics for use in industry other than the pharmaceutical and agrochemical industries; chemicals used in oil drilling being synthetic fluids for industrial use, namely, chemical petroleum additives, hydraulic fluids, heat transfer fluids, refrigerant fluids, and chemicals for use in oil drilling processes; fire extinguishing compositions; tempering and soldering preparations; adhesives used in industry; chemical compositions prepared from the aforesaid goods all for use in the manufacture of plastics and articles made from plastics Plastics and synthetic resins in semi-processed form; semi-processed plastic in sheet, rod, film or tube form; semi-worked synthetic plastics as semi-finished products in fibre form not for textile use; semi-processed compounds of plastics; semi-processed compounds of synthetic resins; plastic components and assemblies in moulded form for use in manufacture, namely, semi-finished injection molded products of plastic for use in a variety of industries; packing and insulating materials; natural rubber, gutta-percha, raw or semi-worked gum, asbestos, mica; plastics in extruded form for use in manufacture or packing; flexible pipes, not of metal; plastics in extruded form used in production; adhesive sealants for general use Scientific and technological services, namely, scientific research in the field of chemicals and plastics; product research services; computer software design services; industrial design; technological and industrial chemical analysis service; design and development of polymerization technologies; design and development of industrial catalysts for use in polyethylene and polypropylene processes; design and development of computer hardware and software; engineering services; surveying services; mineral exploration services; geological surveying; geological research services; environmental protection research and advice services; advisory and consultancy services relating to process technology in the nature of chemical engineering for chemical processing; preparation of engineering drawings, namely, providing technical engineering technical documentation and reports; analytical services relating to computer systems; commissioning, namely, providing quality assurance and quality control services in the field of chemical plant, machinery and apparatus; advice, information and consultancy services relating to all the aforesaid services
The present invention relates to processes and apparatus useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).
PEPEEEPEEPEPPEPPEEEEEEEE is the mol fraction of ethylene/ethylene/ethylene sequences (EEE) in the sample, all sequence concentrations being based on a statistical triad analysis of 13C-NMR data. The composition preferably comprises a blend of a propylene homopolymer and a propylene-ethylene copolymer, and the propylene-ethylene copolymer is preferably a polypropylene post-consumer resin (PCR).
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Chemical products, substances and additives; chemical
coatings for industry; artificial resins; catalysts; vinyl
acetate; polymeric compounds for use in manufacture; raw
polystyrene resins; chemical products in the form of gels;
surfactants; silicates; unprocessed plastics. Plastics in extruded form for use in manufacture or packing
operations; semi-processed plastics in the form of films;
packing, stopping and insulating materials; synthetic resins
and plastics in semi-processed form; semi-processed plastics
in sheet, rod, film or tube form; fibers of plastics, other
than for textile use; compounds of plastics in
semi-processed form; semi-processed plastics; materials made
from plastic films for use in manufacture; semi-processed
goods made from plastic and plastic materials; parts and
fittings for the aforesaid goods.
01 - Chemical and biological materials for industrial, scientific and agricultural use
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Chemical products, substances and additives; chemical
coatings for industry; artificial resins; catalysts; vinyl
acetate; polymeric compounds for use in manufacture; raw
polystyrene resins; chemical products in the form of gels;
surfactants; silicates; unprocessed plastics. Plastics in extruded form for use in manufacture or packing
operations; semi-processed plastics in the form of films;
packing, stopping and insulating materials; synthetic resins
and plastics in semi-processed form; semi-processed plastics
in sheet, rod, film or tube form; fibers of plastics, other
than for textile use; compounds of plastics in
semi-processed form; semi-processed plastics; materials made
from plastic films for use in manufacture; semi-processed
goods made from plastic and plastic materials; parts and
fittings for the aforesaid goods.
46.
Process for operating a polymer powder degasser vessel
The present invention relates to a process for operating a polymer powder degasser vessel, and in particular provides a process for operating a polymer powder degasser vessel which vessel comprises a silo comprising a main vertical cylinder and a hopper at the bottom of the cylinder, there being a polymer powder withdrawal pipe connected to the hopper by which polymer powder is withdrawn from the hopper, and wherein the silo contains a polymer powder which occupies less than 45% of the volume of the silo and the polymer powder passes through the polymer powder degasser vessel in a mass flow manner, further wherein at least one of the following is applied: i) polymer powder is withdrawn from the hopper and recirculated to the silo, wherein the recirculation rate of the polymer powder is at least 30 percent per hour of the polymer powder present in the silo, and ii) a purge gas is provided to the silo via the polymer powder withdrawal pipe or via an inlet located on the hopper at a vertical height which is less than half of height of the hopper from its bottom end.
The present invention relates to a cascade process useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).
A process for cooling quench effluent includes providing a quench column effluent to a quench column aftercooler condensate; cooling the quench column effluent to provide a quench column aftercooler condensate; and recirculating at least a portion of the quench column aftercooler condensate to the quench column aftercooler at a rate to prevent fouling of the quench column aftercooler.
B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
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 53/14 - 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 absorption
A process provides for minimizing an amount of fuel gas utilized in an absorber off-gas incinerator and better control of emissions. The process provides for less temperature deviations in the absorber off-gas incinerator firebox and for less deviation in an amount of oxygen in the absorber off-gas incinerator stack gas.
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
C07C 253/28 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing six-membered aromatic rings, e.g. styrene
C07C 253/24 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
A process is provided for control of an ammoxidation reactor. More specifically, the process includes controlling an amount of oxygen added to the reactor, steam temperature and linear velocity to minimize reactor temperature deviations.
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
C07C 253/24 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
The present invention relates to processes and apparatus useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).
A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising bismuth, molybdenum, iron, cerium and other promoters, with a desirable composition.
3 are disclosed. The copolymers may be suitably prepared by use of metallocene catalyst systems and may be used in film applications, in particular as sealing layers for packaging applications.
C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
The present invention relates to a process for operating a polymer powder degasser vessel, and in particular provides a process for operating a polymer powder degasser vessel which vessel comprises a silo comprising a main vertical cylinder and a hopper at the bottom of the cylinder, there being a polymer powder withdrawal pipe connected to the hopper by which polymer powder is withdrawn from the hopper, and wherein the silo contains a polymer powder which occupies less than 45% of the volume of the silo and the polymer powder passes through the polymer powder degasser vessel in a mass flow manner, further wherein at least one of the following is applied: i) polymer powder is withdrawn from the hopper and recirculated to the silo, wherein the recirculation rate of the polymer powder is at least 30 percent per hour of the polymer powder present in the silo, and ii) a purge gas is provided to the silo via the polymer powder withdrawal pipe or via an inlet located on the hopper at a vertical height which is less than half of height of the hopper from its bottom end.
A process for cooling quench effluent includes providing a quench column effluent to a quench column aftercooler condensate; cooling the quench column effluent to provide a quench column aftercooler condensate; and recirculating at least a portion of the quench column aftercooler condensate to the quench column aftercooler at a rate to prevent fouling of the quench column aftercooler.
B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
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
A catalytic composition and process useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, hydrogen cyanide and acetonitrile and mixtures thereof, wherein the catalyst exhibiting increased selectivity to hydrogen cyanide compared to prior art catalysts.
A catalytic composition and process useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, hydrogen cyanide and acetonitrile and mixtures thereof, wherein the catalyst exhibiting increased selectivity to hydrogen cyanide compared to prior art catalysts.
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
C07C 205/00 - Compounds containing nitro groups bound to a carbon skeleton
B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
C07C 253/18 - Preparation of carboxylic acid nitriles by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
The present invention relates to a cascade process useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).
The present invention relates to a cascade process useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).
A process provides for minimizing an amount of fuel gas utilized in an absorber off-gas incinerator and better control of emissions. The process provides for less temperature deviations in the absorber off-gas incinerator firebox and for less deviation in an amount of oxygen in the absorber off-gas incinerator stack gas.
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
C07C 253/24 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
C07C 253/28 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing six-membered aromatic rings, e.g. styrene
A process is provided for control of an ammoxidation reactor. More specifically, the process includes controlling an amount of oxygen added to the reactor, steam temperature and linear velocity to minimize reactor temperature deviations.
The present invention relates to processes and apparatus useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s). Polymerisation units for ionic polymerisation of a liquid monomer(s) containing reaction mixture comprising a polymerisation loop and a coolant loop and a heat exchanger reactor system ("HERS") which is shared amongst the polymerisation loop and the coolant loop are also disclosed. Ionic polymerisation loop processes for the polymerisation of a liquid monomer(s) containing reaction mixture in a polymerisation unit which comprises a polymerisation loop, a coolant loop and a HERS which is shared amongst the polymerisation loop and the coolant loop wherein the polymerisation loop comprises a polymer withdrawal system and a reaction mixture piping system which comprises a circulating pump and which is connected to an inlet and an outlet of said HERS are also disclosed.
The present invention relates to processes and apparatus useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).
An extractive distillation process includes providing a mixture that includes acrylonitrile and acetonitrile to at least one distillation column; contacting the mixture that includes acrylonitrile and acetonitrile with aqueous solvent to provide an acrylonitrile-water azeotrope; and separating the acrylonitrile-water azeotrope from the acetonitrile to provide an overhead stream and a sidestream. The process includes controlling overhead stream impurities and sidestream impurities using a flow of the aqueous solvent added to the distillation column and a temperature of the distillation column.
A process for separating acrylonitrile from a mixture of acrylonitrile and acetonitrile includes providing a mixture of acrylonitrile and acetonitrile to a recovery column; contacting the mixture of acrylonitrile and acetonitrile with aqueous solvent to provide an acrylonitrile-water azeotrope; and separating the acrylonitrile-water azeotrope from the acetonitrile to provide an overhead stream that includes the acrylonitrile-water azeotrope and about 0.05 weight percent or less acetonitrile, a bottoms stream that includes about 0 to about 0.0075 weight percent acetonitrile, and a sidestream that includes about 5 to about 70 weight % acetonitrile.
A process for separating acrylonitrile from a mixture of acrylonitrile and acetonitrile includes providing a mixture of acrylonitrile and acetonitrile to a recovery column; contacting the mixture of acrylonitrile and acetonitrile with aqueous solvent to provide an acrylonitrile-water azeotrope; and separating the acrylonitrile-water azeotrope from the acetonitrile to provide an overhead stream that includes the acrylonitrile-water azeotrope and about 0.05 weight percent or less acetonitrile, a bottoms stream that includes about 0 to about 0.0075 weight percent acetonitrile, and a sidestream that includes about 5 to about 70 weight % acetonitrile.
A process and system for acrylonitrile and HCN recovery includes a heads column system operated to reduce heads column condenser duty and reduce equipment while maintaining required purity and specifications with minimal increases in reboiler duty. In one aspect, the process includes providing a feed stream that includes acrylonitrile, HCN and water to a heads column; distilling the feed stream in the heads column to produce a heads column overhead stream that includes HCN and a bottom liquid stream that includes acrylonitrile; removing a sidestream from a side draw of the heads column that includes water and organics; separating at least some water and organics from the sidestream to provide an organic stream; returning the organic stream to the heads column; and adjusting a ratio of an amount of sidestream removed from a side draw of the heads column to an amount of organic stream returned to the heads column below the side draw to provide the bottom liquid stream with 500 ppm or less HCN.
A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof, or acrolein/arylic acid, methacrolein/methacrylic acid, and mixtures thereof; also useful for the conversion of an alcohol, selected from the group consisting of methanol, ethanol and mixtures thereof, to hydrogen cyanide (HCN), acetonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising bismuth, molybdenum, iron, cerium, and at least one of samarium, praseodymium and neodymium.
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
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
C07C 253/24 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
C07C 51/25 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
C07C 45/35 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
A process for controlling quench column pH includes adding acid to the quench column to control pH in a quench column effluent from one or more quench columns. In one aspect, the process includes measuring a pH of quench column condensate and adjusting an amount of acid added to the quench column to maintain of pH of about 3.5 to about 7 in the condensate. Measurement of condensate pH provides a consistent and accurate procedure for controlling acid addition to the quench column.
A promoted VPO catalyst for the oxidation of n-butane to maleic anhydride wherein the catalyst comprises the mixed oxides of vanadium and phosphorus, niobium and at least one of antimony and bismuth, wherein the catalyst may be produced in a process comprising impregnating a VPO catalyst with a metal source compound of niobium and a metal source compound of at least one of antimony and bismuth, to form a metal impregnated VPO catalyst, and then drying the metal impregnated VPO catalyst to form the promoted VPO catalyst.
A promoted VPO catalyst for the oxidation of n-butane to maleic anhydride wherein the catalyst comprises the mixed oxides of vanadium and phosphorus, niobium and at least one of antimony and bismuth, wherein the catalyst may be produced in a process comprising impregnating a VPO catalyst with a metal source compound of niobium and a metal source compound of at least one of antimony and bismuth, to form a metal impregnated VPO catalyst, and then drying the metal impregnated VPO catalyst to form the promoted VPO catalyst.
Novel copolymers having a density (D) in the range 0.895 - 0.910 g/cm3, a melt index MI2 (2.16 kg, 190°C) in the range of 0.01 - 6 g/10 min, a Compositional Distribution Branch Index (CDBI) in the range 55-85%, and a sealing initiation temperature (SIT) and density (D) satisfying the relationship SIT ≤ (A x D) - B wherein A is 800°C x cm3/g and B is 650°C, wherein the SIT (°C) is determined on a 70 μm film at 0.5N/15 mm and D Is in units of g/cm3 are disclosed. The copolymers may be suitably prepared by use of metallocene catalyst systems and may be used in film applications, in particular as sealing layers for packaging applications.
C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
2 between 0.2 and 2 g/10 min, and a relationship between spiral flow ‘SF’ (measured in mm at 250° C./1000 bar/100 mm/s) and ESCR ‘E’ (measured in hours) of E>200−SF. The composition contains 48-62 wt % of an ethylene polymer (A) and 38-52 wt % of an ethylene copolymer (B). Copolymer (B) has a higher weight average molecular weight than polymer (A), and both of fractions (A) and (B) have a reverse comonomer distribution such that comonomer content increases with increasing molecular weight in the individual fraction.
B65D 39/00 - Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
B65D 41/00 - Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge apertureProtective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
C08F 4/659 - Component covered by group containing a transition metal-carbon bond
C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
Process for the polymerization of olefins in a polymerization reactor system including (i) a gas phase reactor having a gas outlet and one or more withdrawal lines for withdrawal of a polymer-containing stream, (ii) a recycle loop for recycling gas exiting the reactor through the gas outlet back to the reactor, (iii) a polymer separation system for separating reactants from the polymer product in the withdrawn polymer-containing stream, and (iv) a recycle system for recycling reactants removed from the reactor in the withdrawn polymer-containing stream back to the reactor. A scavenger is introduced directly into one or more of the recycle loop, the polymer separation system and the recycle system.
Process for polymerizing olefins in a polymerization reactor system including at least first and second introduction points by which the same reaction component may be introduced directly at different locations on the reactor system. At a first time, the reaction component is introduced through at least the first introduction point, such that a proportion X of the reaction component which is introduced through the first and second introduction points is introduced through the first introduction point. At a second, later, time the same reaction component is introduced through at least the second introduction point and such that a proportion Y of the reaction component which is introduced through the first and second introduction points is introduced through the first introduction point. Y is less than X, and at least one of the first and second introduction points is located on the reactor system at a location not on the reactor.
Polymerization process for the polymerization of monomer in a polymerization system having at least one component attached thereto which component is flushed with a flush medium which enters the polymerization system. Initially, the component is flushed with a first flush medium, and subsequently the component is flushed with a second flush medium.
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
B01J 8/24 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique
A method includes reacting, at a first pressure and in the presence of a catalyst, ammonia, oxygen, and a hydrocarbon selected from the group consisting of propane, propylene and isobutylene, and combinations thereof, to provide a reactor effluent stream that includes acrylonitrile. The method includes quenching the reactor effluent stream with a first aqueous stream to provide a quenched stream that includes acrylonitrile. The method includes compressing the quenched stream to provide an effluent compressor stream comprising acrylonitrile, and conveying, at a second pressure, the effluent compressor stream to an absorber. The method includes, in the absorber, absorbing acrylonitrile in a second aqueous stream to provide a rich water comprising acrylonitrile, wherein the absorbing is performed at a pressure greater than the first pressure.
C07C 253/24 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
78.
IMPROVED CYCLONE CONFIGURATION FOR AMMOXIDATION REACTOR
An ammoxidation reactor includes an outer ring of sets of multistage cyclones suspended in the reactor. Each multistage set of cyclones includes a first stage cyclone having a first stage inlet configured to receive a reactor stream flowing up from a fluidized catalyst bed in the reactor and separate at least a portion of catalyst from the reactor stream. A ratio of square meter of first stage inlet area per square meter of available cross sectional area of the reactor is about 0.03 to about 0.05. An ammoxidation process includes reacting a hydrocarbon stream in a fluidized catalyst bed in a reactor to produce a reactor stream. The process further includes separating catalyst from the reactor stream in an outer ring of sets of multistage cyclones, each multistage set of cyclones including a first stage cyclone having a first stage inlet configured to receive a reactor stream flowing up from a fluidized catalyst bed in the reactor and separate at least a portion of catalyst from the reactor stream. A ratio of cyclone inlet velocity in meters/second to a reactor effluent velocity in meters/second is 15 or greater.
B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
A method includes reacting, at a pressure of 140 kPa (absolute) or less and a linear velocity of 0.5 to 1.2 meters/second and in the presence of a catalyst, ammonia, oxygen, and a hydrocarbon selected from the group consisting of propane, propylene and isobutylene, and combinations thereof, to provide a reactor effluent stream that includes acrylonitrile. The method includes quenching the reactor effluent stream with a first aqueous stream to provide a quenched stream that includes acrylonitrile. The method includes compressing the quenched stream to provide an effluent compressor stream comprising acrylonitrile, and conveying, at a second pressure, the effluent compressor stream to an absorber. The method includes, in the absorber, absorbing acrylonitrile in a second aqueous stream to provide a rich water comprising acrylonitrile, wherein the absorbing is performed at a pressure greater than the first pressure.
C07C 253/24 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
Process for enhancing the separation of monomer components from light components other than monomer by providing a first stream containing monomer and light components other than monomer and passing the first stream to a first separator at a first pressure to separate a gaseous second stream containing at least some of the light components other than monomer and provide a liquid third stream containing monomer. A portion of the third stream and a fourth stream containing monomer and light components other than monomer is passed to a second separator at a second pressure which is lower than the first pressure to separate a gaseous fifth stream containing at least some of the light components other than monomer from the fourth stream and provide a liquid sixth stream containing monomer.
Process for the polymerization or copolymerization of olefins by bringing the olefins into contact with a catalyst under polymerization or copolymerization conditions in a reactor containing a charge powder. The process includes, prior to introducing the catalyst into the reactor, introducing a scavenger into the reactor which reacts with catalyst poison present. The scavenger is added to the reactor until the charge powder contains a remaining amount of scavenger of between 0.1 and 2.5 moles per ton of charge powder.
A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising rubidium, bismuth, cerium, molybdenum, iron and other promoters, with a desirable composition.
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
B01J 21/10 - MagnesiumOxides or hydroxides thereof
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
C07C 45/35 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
C07C 51/25 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising rubidium, bismuth, cerium, molybdenum, iron and other promoters, with a desirable composition.
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
Process for introducing a fresh feed of fresh comonomer and/or fresh inert hydrocarbon to a polymerization reactor which is part of a polymerization process having high and low pressure recovery systems, the high pressure recovery system being at a pressure of 0.5 MPa (5 bar) or above and the low pressure recovery system being at a pressure of less than 0.5 MPa (5 bar). The process includes passing the fresh feed and a process stream containing a first component of hydrogen, nitrogen and/or methane and a second component of a monomer to a separator which is part of the low pressure recovery system and is at a pressure of 0.4 MPa or less to produce a first stream containing a majority of the first component and a second stream containing the second component and a majority of the fresh feed, and passing the second stream to the polymerization reactor.
3 to produce a first polymer, (b) passing the first polymer to a second reactor and polymerizing monomer in the second reactor to produce a second polymer containing the first polymer and polymer produced in the second reactor, and (c) passing the second polymer to a third reactor and polymerizing monomer in the third reactor to produce a third polymer containing the second polymer and polymer produced in the third reactor. The polymerizations are performed such that between 0.01 and 5 w % of the total mass of the third polymer is polymer produced in the second reactor.
Method for treating a heat exchanger which in operation is used to cool process water which has been in contact with polymer particles. The method includes passing to the process side of the heat exchanger a treatment stream while the heat exchanger is at an elevated temperature compared to the temperature when the heat exchanger is in operation.
B08B 7/00 - Cleaning by methods not provided for in a single other subclass or a single group in this subclass
F28G 9/00 - Cleaning by flushing or washing, e.g. with chemical solvents
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
F28G 13/00 - Appliances or processes not covered by groups Combinations of appliances or processes covered by groups
B08B 3/10 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
A process and system for removing heavy organic impurities from a process stream (196) includes providing a process stream (196) from a distillation column (182) to an evaporator system. The evaporator system including one or more evaporation stages (136, 138, 142) with a first evaporation stage (136) configured to receive the process stream (196) from the distillation column (182). The process includes providing an aqueous condensate (154) and a liquid residue (178) from one or more evaporation stages and conveying (135) aqueous condensate to a quench column and/or light organic stripper.
Processes are provided for quench column operation and bottom processing. A process for providing an ammonium sulfate stream includes conveying a reactor effluent to a quench column; and conveying sulfuric acid to the quench column to provide a quench column bottoms stream having about 10 weight percent or less polymer, and wherein an amount of ammonium sulfate and an amount of polymer are defined by a formula y = -M1x + C1 where y is a weight % of ammonium sulfate, x is a weight % polymer, M1 is 4.6 or less and C1 is 45 or less.
A process and system for removing heavy organic impurities from a process stream includes providing a process stream having water and about 0.5 to about 1.5 weight percent heavy organic impurities. The process includes separating water from the heavy organic impurities in an evaporator system having one or more evaporation stages to provide an aqueous condensate and a liquid residue. The aqueous condensate has about 0.1 weight percent or less heavy organic impurities and the liquid residue has about 3 to about 10 weight percent heavy organic impurities.
A process and system for removing heavy organic impurities from a process stream includes providing a process stream having water and about 0.5 to about 1.5 weight percent heavy organic impurities. The process includes separating water from the heavy organic impurities in an evaporator system having one or more evaporation stages to provide an aqueous condensate and a liquid residue. The aqueous condensate has about 0.1 weight percent or less heavy organic impurities and the liquid residue has about 3 to about 10 weight percent heavy organic impurities.
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
C07C 253/18 - Preparation of carboxylic acid nitriles by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
The present invention relates to vapour-solids separations, and in particular provides a process for the separation of a stream comprising vapour and a stream comprising solids from a stream comprising vapour and solids using a separation vessel, said separation vessel having: a. a first inlet for the stream to be separated, b. a liquid outlet, c. a vapour outlet, d. a demister located on the vapour outlet, and e. a second inlet by which liquid can be passed to the demister said process comprising (i) passing the stream comprising vapour and solids through the first inlet and in to the separation vessel, (ii) recovering from the vapour outlet a vapour stream which comprises vapour from the stream comprising vapour and solids and which vapour stream has passed through the demister in the separation vessel, (iii) passing to the separation vessel, via the second inlet, a first liquid stream which contacts the vapour stream in the demister, and (iv) recovering from the liquid outlet a second liquid stream which comprising the solids from the stream comprising vapour and solids, and liquid from the first liquid stream.
Control of a reaction temperature occurring inside an ammoxidation reactor is achieved by controlling a flowrate of superheated steam allowed to bypass superheat cooling coils of the cooling system of the reactor in response to a measured reaction temperature. In another aspect, control of the reaction temperature is achieved by controlling a pressure inside a steam drum used to supply the superheated steam used for cooling purposes.
A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising bismuth, molybdenum, iron, cerium and other promoters, wherein the ratio of bismuth to cerium ratio in the composition is greater than or equal to 0.45 and less than or equal to 1.5.
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
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
C07C 253/18 - Preparation of carboxylic acid nitriles by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
Process for polymerizing monomer in a reactor by withdrawing an effluent from the reactor which is a slurry of polymer solids in a liquid medium and contacting a first stream containing vapor derived from the effluent withdrawn from the reactor with a feed stream to the reactor. The first stream which has the majority of the vaporized components of the liquid medium in the effluent withdrawn from the reactor is brought into contact with the feedstream to the reactor at a pressure of 0.5 MPa or above and/or the first stream is separated from the polymer withdrawn from the reactor at a pressure of 0.5 MPa or above.
3; b) a fluidization grid plate disposed in said vessel, said fluidization grid plate and having an upper major surface and a lower major surface; c) an array of generally conical depressions in said upper major surface that overlap by less than 17%; and d) an array of holes perforating said fluidization grid plate, said holes extending from at least some of said generally conical depressions through said lower surface.
B01J 8/24 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C08F 4/78 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from metals not provided for in group selected from refractory metals selected from chromium, molybdenum, or tungsten
96.
CONTROL OF AMMONIA AND/OR AIR FEED INTO AN AMMOXIDATION REACTOR
A process and system are provided for controlling an amount of ammonia and/or air provided to an ammoxidation reactor. The process includes maintaining a pH of a quench water bottoms and adjusting an amount of ammonia in a reactor feed to provide an ammonia to hydrocarbon ratio of about 1 to about 2 in the reactor feed. Further, the process may include adjusting an amount of air the reactor feed to provide an air to hydrocarbon ratio of about 9 to about 10 in the reactor feed.
B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
3, a high load melt index HLMI of 7-15 and a melt storage modulus G′ at a dynamic frequency where the loss modulus G″=3000 Pa. G′(G″=3000) of 1400-1800 Pa. The composition has a value of Mz/G′(G″=3000) of at least 900 DA/PA, where Mz is z-average molecular weight.
A method is provided comprising adding acid to a reflux stream, and conveying the reflux stream to an acetonitrile fractionator, wherein the acid reduces fouling in the acetonitrile fractionator.
A process is provided for maintaining storage of a crude acrylonitrile in a crude tank. The process includes conveying the crude acrylonitrile to the crude tank, adding acid to the crude acrylonitrile in the crude tank in an amount effective for maintaining a pH below a target pH, and maintaining a temperature of the crude acrylonitrile in the crude tank below a target temperature.
A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising bismuth, molybdenum, iron, cerium and other promoters, wherein the ratio of bismuth to cerium ratio in the composition is greater than or equal to 0.45 and less than or equal to 1.5.
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
C07C 253/26 - Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
C07C 253/18 - Preparation of carboxylic acid nitriles by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
