Disclosed in the present application are a lithium adsorbent and a preparation method therefor. The lithium adsorbent is of a porous structure, and comprises an aluminum-series lithium adsorbent active material and a hydrophilic binder; and the lithium adsorbent has an average pore size of 1-10 nm, a pore volume of 0.65-0.8 ml/g, and a specific surface area of 400-600 m2/g. The lithium adsorbent of the present application has a specific average pore size of 1-10 nm, the diameter of lithium ions is 0.3 nm, and the pore size of the lithium adsorbent of the present application is larger than the diameter of the ions by three times or more, whereby the lithium ions can quickly go into or out of pores. Therefore, by means of the structure, a high adsorption efficiency and a high desorption efficiency at a high flow rate can be ensured, the desorption of the lithium adsorbent is more concentrated compared with that of a common lithium adsorbent, and a trailing phenomenon is reduced; therefore, the production efficiency of lithium can be effectively improved. Moreover, since the pore size of the product of the present application is smaller than 10 nm, the lithium adsorbent has a low dissolution loss rate and a long service life; and the lithium adsorbent of the present application still has a high adsorption efficiency and a high desorption efficiency after 1000 adsorption-desorption cycles.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/08 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de l'oxyde ou de l'hydroxyde d'aluminiumCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de la bauxite
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
The present application relates to the field of adsorption method-based lithium extraction, and particularly to a lithium adsorbent and a preparation method therefor. The raw materials of the lithium adsorbent comprise a lithium adsorbent active material and adjuvants, wherein the adjuvants comprise a hydrophilic binder and a reinforcing fiber. The use of the reinforcing fiber and the hydrophilic binder powerfully prevents propagation of brittle cracks caused by volume expansion and shrinkage in the use process of the lithium adsorbent active material, significantly improves the strength of the lithium adsorbent and prolongs the cycle service life of the lithium adsorbent; moreover, the use of the hydrophilic binder increases the adsorption speed and capacity of the lithium adsorbent.
B01J 20/02 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
The present application relates to the technical field of hydrometallurgy, and in particular relates to a preparation method for an adsorption unit for lithium recovery and the use thereof. On the basis of patent CN 102631897 B, the present application innovatively proposes that a crushed lithium adsorbent resin or a lithium adsorbent precursor and an adhesive are extruded and formed to prepare an adsorption unit. The adsorption unit has the high selectivity and adsorption capacity of the lithium adsorbent resin, and can also achieve the high-efficiency adsorption of lithium from water with an ultra-low lithium content; and when the adsorption unit is used for adsorbing lithium from water with an ultra-low lithium content, the whole adsorption process is simple, the desorption efficiency is high, and the cost is low.
The present invention relates to the technical field of biological functions of proteins, and specifically relates to a polypeptide, a fused polymer protein and the use thereof. The polypeptide is selected from: (1) a polypeptide that has a substitution mutation in at least one position selected from positions 16, 25, 29, 49 and 58 compared to the native C domain of protein A as shown in SEQ ID NO. 1, wherein the amino acid at position 16 is subjected to substitution mutation to leucine or valine, the amino acid at position 25 is subjected to substitution mutation to lysine, arginine, histidine or tryptophan, the amino acid at position 29 is subjected to substitution mutation to alanine, leucine or threonine, the amino acid at position 49 is subjected to substitution mutation to arginine or histidine, and the amino acid at position 58 is subjected to substitution mutation to glycine, isoleucine or alanine; and (2) a polypeptide that has at least 80% or more homology to the polypeptide in (1) and retains a substitution mutation in at least one of positions 16, 25, 29, 49 and 58. The polypeptide has high alkali tolerance and high loading capacity.
C07K 14/31 - Peptides ayant plus de 20 amino-acidesGastrinesSomatostatinesMélanotropinesLeurs dérivés provenant de bactéries provenant de Micrococcaceae (F) provenant de Staphylococcus (G)
C07K 16/00 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux
C07K 1/22 - Chromatographie d'affinité ou techniques analogues basées sur des procédés d'absorption sélective
C12N 15/31 - Gènes codant pour des protéines microbiennes, p. ex. entérotoxines
C12N 15/62 - Séquences d'ADN codant pour des protéines de fusion
C12N 15/70 - Vecteurs ou systèmes d'expression spécialement adaptés à E. coli
C12N 1/21 - BactériesLeurs milieux de culture modifiés par l'introduction de matériel génétique étranger
G01N 33/68 - Analyse chimique de matériau biologique, p. ex. de sang ou d'urineTest par des méthodes faisant intervenir la formation de liaisons biospécifiques par ligandsTest immunologique faisant intervenir des protéines, peptides ou amino-acides
B01D 15/38 - Adsorption sélective, p. ex. chromatographie caractérisée par le mécanisme de séparation impliquant une interaction spécifique non couverte par un ou plusieurs des groupes , p. ex. chromatographie d'affinité, chromatographie d'échange par ligand ou chromatographie chirale
An adsorption resin column device, comprising: a vessel body (1), a partition plate (2), a first resin structure (3) and a second resin structure (4). The vessel body (1) is provided with a first circulation port (11) and a second circulation port (12). The partition plate (2) is arranged in the vessel body (1) and partitions the vessel body (1) into a first circulation channel (13) and a second circulation channel (14). The two ends of any circulation channel respectively communicate with the first circulation port (11) and the second circulation port (12). The first resin structure (3) is arranged in the first circulation channel (13), and the second resin structure (4) is arranged in the second circulation channel (14). The arrangement of the partition plate (2) achieves the same pressure drops and the same waste gas flow rates on the two sides of the partition plate (2), thereby ensuring that airflows circulating in the two channels are stable, thus improving the reaction efficiency and capability of a fluid medium and the resin structures. In addition, when volume changes of adsorption towers are not big, the contact area between gases and resin structures and the circulation capacity are multiplied.
B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
B01D 53/82 - Procédés en phase solide avec des réactifs à l'état stationnaire
B01D 15/04 - Procédés de séparation comportant le traitement de liquides par des adsorbants ou des absorbants solidesAppareillages pour ces procédés par des substances échangeuses d'ions comme adsorbants
A resin column device, comprising a container body (1), a heat exchange mechanism, and an isolation support mechanism (3). The container body (1) is provided with a first circulation port (11) and a second circulation port (12); the heat exchange mechanism is mounted in the container body (1) and is arranged close to the side where the first circulation port (11) is located; and the isolation support mechanism (3) is arranged at the side close to the second circulation port (12) relative to the heat exchange mechanism, and the isolation support mechanism (3) comprises a filter screen (31), wherein the filter screen (31) divides the container body (1) into a filler cavity (13) suitable for being filled with a filler (6) and a heat exchange cavity (14) suitable for mounting the heat exchange mechanism.
B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
B01D 53/82 - Procédés en phase solide avec des réactifs à l'état stationnaire
B01D 53/38 - Élimination des composants de structure non définie
The present application discloses a lithium extraction method for an alkaline solution, in which a lithium adsorption material is used in an alkaline environment. Lithium ions in the alkaline solution are adsorbed, the lithium adsorption material is replaced with an alkaline high-lithium low-impurity solution, and then an acid solution is used for desorption, so that a high-lithium salt solution having higher lithium content can be obtained. Lithium concentration can reach 5 g/L or more, and the high-lithium salt solution can enter a bipolar membrane system for electrolysis, thereby preparing an alkaline high-lithium low-impurity solution and an acid solution for replacement and desorption of the lithium adsorption material. In the method provided by the present application, lithium in an alkaline solution is adsorbed by resin, and the lithium is preliminarily separated from sodium and potassium. Then, the sodium and the potassium are gradually removed from the resin according to the difference of the retention characteristics of the lithium, the sodium and the potassium on the resin, so that the function of lithium purification is achieved, and lithium concentration is ensured.
C22B 3/24 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques par adsorption sur des substances solides, p. ex. par extraction avec des résines solides
8.
METHOD FOR LITHIUM ADSORPTION IN CARBONATE- AND/OR SULFATE-CONTAINING SOLUTION
A method for lithium adsorption in a carbonate- and/or sulfate-containing solution, comprising using an aluminum-based lithium adsorbent for adsorption of lithium ions in the carbonate- and/or sulfate-containing solution, after the adsorption is saturated, using a weakly acidic high-concentration salt solution to transform the adsorbent, analyzing the transformed adsorbent by means of a low-concentration salt solution or water, and entering the next cycle for operation.
A multi-way valve, comprising a driver (9), and a first fixing member (1), a first rotating structure (2), a liquid distribution structure (3), a second rotating structure (4), and a second fixing member (5) that are stacked in sequence. The first rotating structure (2) and the second rotating structure (4) are driven by the driver (9) to rotate relative to the first fixing member (1); the first rotating structure (2) has a first passage (21) communicated with a liquid inlet of the first fixing member (1); the liquid distribution structure (3) has a second passage (34) and a third passage (32); the second passage (34) is communicated with the first passage (21); the second passage (34) is communicated with the third passage (32); the second rotating structure (2) has a fourth passage (41) communicated with the third passage (32); and the second fixing member (5) is communicated with the fourth passage (41). In a liquid conveying process, both a liquid inlet and a liquid outlet are fixed members which are fixedly provided, and all passages are directly communicated with one another in an output process, such that the side surface rotating fit of an original device is changed into axial rotating fit, the liquid flowing direction is changed, and the possibility of liquid leakage is greatly reduced.
F16K 11/074 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont toutes les faces d'obturation se déplacent comme un tout comportant uniquement des tiroirs à éléments de fermeture articulés à pivot à faces d'obturation planes
B01J 49/00 - Régénération ou réactivation des échangeurs d'ionsAppareillage à cet effet
B01J 47/00 - Procédés d'échange d'ions en généralAppareillage à cet effet
Disclosed is a sealing device, comprising: a driving member, a sealing body (1), and an expansion member (2). The sealing body (1) is mounted on a housing body, the sealing body (1) is provided with a mounting hole (12), the mounting hole (12) is suitable for matching a pipe body to be sealed, and the sealing body (1) is provided with a mounting cavity (11). The expansion member (2) is mounted in the mounting cavity and is provided with an expansion cavity (21), and the driving member is in communication with the expansion cavity (21). The expansion member (2) has an expansion state in which the area of the expansion cavity expands under the drive of the driving member so as to drive the sealing body to deform toward the side of said pipe body along the radial direction of the mounting hole, and the sealing pressure of the sealing body on said pipe body also increases, thus ensuring that there is no leakage at the connection position of a processing pipeline inside of the multi-way valve body. In addition, when the valve body structure must be switched and rotated, the expansion member does not expand, and the pipeline is sealed by using only the sealing body, thus reducing the rotational frictional resistance at a sealing position, and preventing a rotary valve from experiencing the problem of difficulties with rotation. Further disclosed is a valve body system comprising the described sealing device.
F16K 11/085 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont toutes les faces d'obturation se déplacent comme un tout comportant uniquement des robinets à boisseau à noix cylindrique
11.
RESIN FOR REMOVING PHOSPHORUS FROM WATER BODY, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
A resin for removing phosphorus from water body, and a preparation method therefor and an application thereof. The particle size of the resin is 0.5-0.8 mm; the resin has a porous structure, the specific surface area is 8-25 m2/g, and the pore size distribution is 3-15 nm; the wet apparent density is 0.68-0.74 g/cm3; the wet true density is 1.12-1.18 g/cm3; and the water content of the resin is 43-57% in percentage by weight. The resin is loaded with a functional group having a lanthanum-oxygen bond, so that the resin can selectively adsorb phosphate radicals in the water body. The resin can selectively remove phosphorus in the water body by using a mode of loading lanthanum on weak acid cation resin and utilizing high selectivity of the lanthanum-oxygen bond to phosphate radicals, is easy to resolve and low in synthesis cost, and can be repeatedly used. Phosphorus in eutrophicated water and waste water can be effectively removed, the content of phosphate radicals in the water body can be controlled within 20 ppm, the phosphorus removal cost of the water body is reduced, and the resin has great advantages compared with conventional disposable phosphorus adsorbents.
A method for recovering lithium from a lithium precipitation mother liquor, the method using the following cycle steps including adsorption, displacement, desorption and transformation: a. mounting a lithium-sodium separation resin in a resin column, and adding the lithium precipitation mother liquor to the resin column for adsorption, wherein the adsorption rate can reach 90% or more; b. after adsorption, washing the resin with water, displacing the resin with a lithium-salt-containing solution to wash out residual sodium from the resin; c. after displacement, desorbing the resin by means of an acid solution to obtain a solution with a high lithium content and a low sodium content, which solution has passed desorption criteria; and d. after desorption, carrying out reverse transformation on the resin by means of a transformation solution in order to ensure that no bubbles appear and then reduce the adsorption effect during the adsorption process. During the cycle, the lithium in the lithium precipitation mother liquor is separated from the solution with a high lithium-to-sodium ratio to obtain the solution with the high lithium-to-sodium ratio.
A solid-phase synthesis carrier, a preparation method therefor and the use thereof, wherein a diene cross linking agent with a similar reactivity ratio to styrene and two vinyl groups thereof not on the same benzene ring is selected as a cross linking monomer, and is subjected to suspension polymerization to obtain a porous resin. The porous resin is then functionalized to obtain a porous resin with an amino or hydroxyl functional group. Compared with existing preparation methods, the reactivity ratio of the crosslinking agent and styrene is similar, which is beneficial to improving the uniformity of the chemical structure in the resin, forming uniformly distributed active sites and channels, and is beneficial to improving the reaction efficiency and reducing the mass transfer resistance. The preparation of oligonucleotides by using such a carrier as a solid-phase synthesis carrier can improve the yield and purity of the oligonucleotides.
C08F 257/02 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères de monomères aromatiques tels que définis dans le groupe sur des polymères de styrène ou de styrène substitué par des groupes alkyle
C08J 9/00 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement
B01J 20/285 - Absorbants ou adsorbants poreux à base de polymères
A porous resin used to solid phase synthesis and a preparation method therefor, specifically being a porous resin having functional groups being an amino group or a hydroxyl group and a preparation method therefor. Using an olefin compound containing two cyano groups as a modified monomer, using a high internal phase emulsion as a pore-foaming agent, and performing suspension polymerization to prepare the porous resin. And then functionalizing the porous resin to obtain the porous resin having functional groups being an amino group or a hydroxyl group. Different from the existing preparation method, the modified monomer can make the distribution of the functional groups more uniform, and make the swelling degrees of the porous resin in different solvents close. The high internal phase emulsion pore-foaming agent can make the pore size distribution of the carrier narrower. The porous resin can be used as a solid phase synthesis carrier to prepare an oligonucleotide, and the use of the carrier is beneficial for improving the yield and purity of the oligonucleotide.
C08F 212/14 - Monomères contenant un seul radical aliphatique non saturé contenant un cycle substitué par des hétéro-atomes ou des groupes contenant des hétéro-atomes
C08J 9/28 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement par élimination d'une phase liquide d'un objet ou d'une composition macromoléculaire, p. ex. par séchage du coagulum
C07H 1/00 - Procédés de préparation des dérivés du sucre
C07H 21/00 - Composés contenant au moins deux unités mononucléotide comportant chacune des groupes phosphate ou polyphosphate distincts liés aux radicaux saccharide des groupes nucléoside, p. ex. acides nucléiques
15.
NEW METHOD FOR EXTRACTING METAL NICKEL FROM LATERITE NICKEL ORE LEACHING LIQUOR
Disclosed is a method for extracting metal nickel from a laterite nickel ore leaching liquor. The whole technological process of the method comprises the following steps: enabling laterite nickel ore leaching liquor to enter a resin tower from a raw material tank via a feed pipe, wherein nickel ions in the laterite nickel ore leaching liquor are adsorbed onto and enriched with resin; and after the resin is saturated through adsorption, enabling a leachate to enter the resin tower through a leachate-feeding pipe, and then washing the laterite nickel ore leaching liquor with nickel that is not adsorbed back into the raw material tank to wait for the next adsorption, etc. Compared with a conventional static bed system, the method has the advantages that the utilization rate of the resin can be improved by 20% or more, the use efficiency of the resin can be increased by 40% or more, and the production cost can be reduced by 30-50%. In addition, due to the fact that a channel rotation switching valve system uses full sealing and the interval operation of the extraction liquid adsorption and the water ejection by means of a material, the water consumption and wastewater drainage throughout the whole operation process are reduced, the production reliability is improved, and year-round uninterrupted operation can thus be achieved.
C22B 3/24 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques par adsorption sur des substances solides, p. ex. par extraction avec des résines solides
16.
ADSORBENT RESIN FOR REMOVING PERFLUORINATED POLLUTANTS FROM BODY OF WATER, PREPARATION THEREFOR, AND USE THEREOF
The present invention relates to an adsorbent resin for removing perfluorinated pollutants from a body of water, a preparation therefor and the use thereof. The objective is to solve the problem of traditional adsorbent materials, such as active carbon materials, having a poor effect in terms of removing perfluorooctanoic acid from water, being non-renewable, etc. In the present method, styrene and divinylbenzene are used as framework materials, a suitable pore-forming agent and a suitable dispersant are selected in order to prepare a macroporous resin with a moderate pore size, and an alkylation reaction is carried out at a low hindrance with p-xylylene dichloride (XDC) being used as a post-crosslinking agent, whereby a rigid benzene ring structure is introduced into the resin by means of post-crosslinking, thereby further increasing the hydrophobicity of the resin and increasing the crosslinking degree thereof; in addition, the micropore structure is adjusted in order to obtain an adsorbent resin with a narrow particle size distribution, a uniform pore size and a high specific surface area. The size of micropores in the resin is close to the molecular size of perfluorooctanoates in water, the adsorbate sieving capacity is strong, and the adsorption rate of perfluorinated compounds can be further improved.
C08J 3/24 - Réticulation, p. ex. vulcanisation, de macromolécules
C08J 9/28 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement par élimination d'une phase liquide d'un objet ou d'une composition macromoléculaire, p. ex. par séchage du coagulum
C08L 25/02 - Homopolymères ou copolymères d'hydrocarbures
Disclosed is a new continuous lithium-sodium separation method. A lithium-sodium separation mother solution, a first leacheate, a desorption solution, a second leacheate and a lithium-sodium separation adsorption tail solution respectively pass through a lithium-sodium separation mother solution feeding pipe (2), a first leacheate feeding pipe (3), a desorption solution feeding pipe (4), a second leacheate feeding pipe (5) and an adsorption tail solution top desorption solution feeding pipe (6) that are located above and below a rotary disc of a multi-way change-over valve system (1), respectively enter corresponding resin columns (7) by means of pore channels and channels in the multi-way change-over valve system (1), and then are discharged from an adsorption tail solution discharging pipe (8), a first leacheate discharging pipe (9), a qualified liquid discharging pipe (10), a second leacheate discharging pipe (11) and an adsorption tail solution top desorption solution discharging pipe (12), so as to complete the whole technological process, wherein the resin columns (7) are connected in series or in parallel by means of the channels located in the multi-way change-over valve system (1). The method is simple and easy to operate, the resin utilization rate is improved by 20% or more, the efficiency is improved by 40% or more, and the production cost can be reduced by 30-50%. The production reliability is improved, and all-year continuous operation can be realized.
C22B 3/24 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques par adsorption sur des substances solides, p. ex. par extraction avec des résines solides
18.
NEW METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE BRINE
A new method for extracting lithium from salt lake brine, comprising the following steps: a salt lake old brine raw material, desorption liquid, low-magnesium water, and adsorption tail liquid pass through an old brine feeding pipe (2), a desorption liquid feeding pipe (4), a low-magnesium water top desorption liquid feeding pipe (3), and an adsorption tail liquid top desorption liquid feeding pipe (11), respectively, which are located above and below a rotary disc of a multi-way valve system (1); and after respectively entering corresponding adsorption columns (6) by means of a duct and channel within the multi-way valve system (1), the entire process procedure is completed from an adsorption tail liquid discharge pipe (7), a qualified desorption liquid discharge pipe (10), a lithium-containing old brine discharge pipe (8), and an adsorption tail liquid top desorption liquid discharge pipe (5); and the adsorption columns (6) are connected in series or in parallel by means of channels located in the multi-way valve system (1). The feature in which a multi-way valve device is simple and easy to operate is utilized, and in comparison with a fixed bed operating system, the utilization rate of lithium adsorbent may be increased by over 20%, the utilization efficiency of the lithium adsorbent may be increased by over 40%, and production costs may be reduced by 30-50%. Therefore, the stability of a qualified desorption liquid is improved, stable production is guaranteed, and year-round constant operation may be achieved.
C22B 3/24 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques par adsorption sur des substances solides, p. ex. par extraction avec des résines solides
brevets