64 results about "Potassium bicarbonate" patented technology

The invention relates to a composite powder explosion suppressant for suppressing aluminum hydride explosion and a preparation method of the composite powder explosion suppressant, belongs to the technical field of explosion suppressants, and solves the problems of single action mechanism, high required explosion suppression concentration, low efficiency and the like of a traditional explosion suppressant. According to the solution, the composite powder explosion suppressant for suppressing aluminum hydride explosion is prepared through raw material pretreatment, powder mixing and drying in sequence, and the composite powder explosion suppressant is prepared from the following components in parts by mass: 10.2 to 30.2 parts of melamine cyanurate, 20.4 to 40.6 parts of monopotassium phosphate, 15.2 to 25.2 parts of potassium bicarbonate, 8.4 to 13.2 parts of aluminum hydroxide, 6.8 to 11.1 parts of zinc borate, 5.0 to 9.0 parts of fumed silica and 2.0 to 5.3 parts of calcium silicate. The explosion suppressant can act on different combustion areas and combustion stages in the aluminum hydride explosion process, the physical and chemical explosion suppression effects of all the components of the explosion suppressant are fully exerted, and meanwhile, efficient explosion suppression of aluminum hydride explosion can be achieved through the synergistic effect of all the components.

The invention relates to a preparation method and application of carbon nanosphere modified biomass monolithic composite porous carbon, and belongs to the field of energy and chemical industry, and the preparation method comprises the following steps: S1, cutting pine into pine chips, drying, and carbonizing at high temperature to obtain a carbonized product; s2, dipping the carbonized product in a hydrochloric acid solution, then washing the carbonized product to be neutral, dehydrating the carbonized product, and polishing the dehydrated carbonized product; s3, putting the composite porous carbon into a glucose solution, carrying out vacuum-assisted impregnation, transferring into a hydrothermal reaction kettle, carrying out hydrothermal carbonization, drying, and carrying out constant-temperature chemical conversion; and S4, placing the composite porous carbon in a potassium bicarbonate solution for vacuum impregnation, drying and dehydrating, placing in a tubular furnace for constant-temperature chemical conversion to obtain a converted and carbonized product, impregnating in hydrochloric acid, washing, and drying. The specific surface area of the integral composite porous carbon is effectively increased, the electrode / electrolyte interface contact characteristic is remarkably optimized, and the pore channel space utilization rate and the energy storage performance are synchronously improved.

The present disclosure includes a multi-fluid kit for three-dimensional printing. The multi-fluid kit can include a fusing agent comprising water and a radiation absorber that absorbs radiation energy and converts the radiation energy to heat, an acidic agent having a pH from about pH 1 to about pH 6.9 that includes water and an acidic component, and a pore-promoting agent including water and a pore-promoting compound. The pore-promoting compound can chemically react with the acidic component to generate a gas, and can be selected from sodium bicarbonate, potassium bicarbonate, or a combination thereof.

The invention provides a preparation method and application of biomass derived carbon / konjac glucomannan composite flexible aerogel, and relates to the technical field of aerogel. The preparation method comprises the following steps: co-activating potassium bicarbonate and melamine, and pyrolyzing biomass at high temperature to prepare rice husk biochar, dispersing the biochar in an aqueous solution, adding KGM to form composite sol, filling a mold with the composite sol, putting the mold into a refrigerator, pre-freezing overnight, and carrying out vacuum freeze drying to form the biomass derived carbon / konjac glucomannan composite flexible aerogel. The composite flexible aerogel has a high specific surface area and a rich microporous structure, provides a large number of adsorption sites for VOCs molecules, significantly improves the adsorption capacity of the composite flexible aerogel to VOCs, has good compression resilience and excellent flexibility, is slightly influenced by environmental factors in the adsorption process, and has good application prospects. The three-dimensional porous structure is stable, collapse is not prone to occurring, high adsorption performance can still be kept after repeated use, the service life is long, and recycling is convenient.

The application discloses a method and system for recycling dust removal ash of blast furnace manganese iron smelting, and first proposes a technical route for recycling carbon powder, fluorite, manganese fluoride, manganese sulfate, potassium bicarbonate, potassium sulfate, sodium chloride and other valuable resources by water washing of the dust removal ash of blast furnace manganese iron smelting. The water washing slag and washing wastewater of the dust removal ash of blast furnace manganese iron smelting are simultaneously treated in a cooperative manner, the process can be designed according to the characteristics of the washing wastewater and the water washing slag, the multistage recovery of the valuable resources is realized, new impurities are not introduced, and the added value of the recovered resources is improved. In addition, the whole process does not discharge wastewater and waste gas, has high economic value and meets the green and environment-friendly production requirements.

The invention discloses a preparation method of a carbon dioxide slow-release phase change cold storage agent for fruit and vegetable preservation, which comprises the following steps: 1) synthesizing poly (N-isopropylacrylamide) hydrogel, and soaking the poly (N-isopropylacrylamide) hydrogel in a mixed solution to obtain PNIPAM hydrogel loaded with citric acid; (2) synthesizing Sponge hydrogel, and soaking the Sponge hydrogel in a potassium bicarbonate solution to obtain Sponge hydrogel loaded with potassium bicarbonate; and (3) the Sponge hydrogel and the PNIPAM hydrogel are assembled, and the carbon dioxide slow-release phase change cold storage agent is obtained. The two hydrogels are assembled, so that the PNIPAM gel network shrinks when the temperature rises to be higher than LCST in the transportation process, the loaded citric acid solution is diffused into Sponge gel and reacts with KHCO3 to generate CO2, and after the temperature falls back, the reaction is slowed down or stopped, so that the controlled release of CO2 is realized.

The invention provides a preparation method of a copper nano-catalyst, a three-electrode system is adopted and placed in an electroplating solution for electrochemical deposition to prepare the copper nano-catalyst, and the electroplating solution contains bivalent copper salt, potassium bicarbonate, potassium sodium tartrate and villiaumite. The preparation method of the copper nano-catalyst is simple, the preparation period is short, and the selectivity of reducing CO2 to produce ethanol is high.

This invention relates to a novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, belonging to the field of activated carbon technology. The novel honeycomb activated carbon comprises the following raw materials: a composite matrix, a composite activator, cobalt nitrate hexahydrate, zirconium oxynitrate hydrate, platinum nitrate, polyvinylpyrrolidone, and hexadecylamine. This invention uses beet pulp, enoki mushroom residue, and king oyster mushroom residue as the composite matrix to provide a large number of hydroxyl groups. Potassium bicarbonate and triammonium phosphate are used as the composite activator to dehydrate, condense, and interconnect the numerous hydroxyl groups on the composite matrix, effectively increasing the pore structure of the system and providing a large number of adsorption sites, facilitating the adsorption and mass transfer of VOCs. Simultaneously, the introduction of cobalt, zirconium, and platinum metal elements significantly improves the catalytic combustion performance of the system for VOCs. The addition of polyvinylpyrrolidone and hexadecylamine further enhances the catalytic combustion performance of the system.

The application designs a method for preparing optically active methyl fluoropropionate by using diethylamine sulfur trifluoride, comprising the following steps: fluorination reaction: under the protection of nitrogen, methyl S-lactate is added to a dry reaction kettle as raw material, the kettle temperature is cooled to a first reaction temperature, diethylamine sulfur trifluoride is added dropwise into the reaction kettle, after dropping, the reaction kettle is heated to a second reaction temperature, after the reaction is completed, the reaction mixture is added dropwise into saturated sodium / potassium bicarbonate aqueous solution to obtain R-2-fluoropropionic acid methyl ester; the molar ratio of diethylamine sulfur trifluoride to methyl S-lactate is 1-1.5:1, the method is high in efficiency, low in three-waste amount, short in reaction path, suitable for industrial production, and has economic value.

The invention belongs to the field of inorganic chemical industry, and particularly relates to a potassium carbonate production technology, in particular to a method for purifying a copper ion-containing pesticide synthesis byproduct potassium chloride and directly using the copper ion-containing pesticide synthesis byproduct potassium chloride to produce potassium carbonate. The method comprises the following steps: purifying a byproduct potassium chloride to obtain a refined byproduct potassium chloride solution V; conveying the refined byproduct potassium chloride solution V into a cation exchange resin bed, and carrying out ion exchange to respectively obtain a potassium bicarbonate solution and an ammonium chloride solution; the potassium bicarbonate solution and the ammonium chloride solution are subjected to evaporation, concentration, crystallization and centrifugal separation respectively, so that a potassium bicarbonate wet product and an ammonium chloride wet product are correspondingly obtained respectively; and calcining the potassium bicarbonate wet product at high temperature to obtain potassium carbonate. The method has the technical advantages of being low in energy consumption, free of waste water, free of newly-added pollutants and impurities and the like.

The present invention relates to pharmaceutical compositions comprising a therapeutically effective dose of a salt of lenvatinib and a potassium carbonate, in particular potassium bicarbonate, wherein the weight ratio of the salt of lenvatinib to the potassium carbonate is selected from the range of 1:0.3 to 1:3.0.

The present disclosure provides a method for extracting potassium bicarbonate from a mineral mixture. The method includes combining potassium chloride, sodium bicarbonate, and magnesium carbonate trihydrate in an aqueous solution. The aqueous solution is cooled to form Engel's salt comprising potassium bicarbonate magnesium carbonate tetrahydrate. Engel's salt is separated from the aqueous solution and leached with water to produce an aqueous potassium bicarbonate solution and magnesium carbonate trihydrate. The method may further include recycling at least a portion of the magnesium carbonate trihydrate produced from leaching Engel's salt back into the aqueous solution. The aqueous potassium bicarbonate solution can be processed to produce various potassium bicarbonate products.

The invention provides an efficient BC type superfine dry powder extinguishing agent. The efficient BC type superfine dry powder extinguishing agent comprises the following components: 87-92 parts by weight of a base material; 5-8 parts by weight of nano hydrophobic white carbon black; 3-5 parts by weight of modified zeolite; the base material comprises sodium bicarbonate and / or potassium bicarbonate; the modified zeolite is ZSM-5 type zeolite loaded with iron ions. Compared with the prior art, the efficient BC type superfine dry powder extinguishing agent provided by the invention adopts components with specific contents, and realizes relatively good overall interaction: zeolite and an acid solution are mixed, acidizing treatment is performed, and then iron ions are loaded through an ion exchange method, so that the efficient BC type superfine dry powder extinguishing agent is obtained. And finally, the mixture is mixed with bicarbonate and nano hydrophobic white carbon black, and the efficient BC superfine dry powder extinguishing agent is prepared. The ratio of effective fire extinguishing components of the fire extinguishing agent is 87% or above, and the fire extinguishing agent has excellent fire extinguishing performance and is particularly suitable for filling of superfine dry powder fire extinguishing equipment; according to the technical scheme, the efficiency and the application range of the fire extinguishing agent are remarkably improved.

This invention relates to compositions, particularly aqueous compositions, comprising: (a) guanidine and / or at least one unsubstituted guanidine salt, and (b) one or more carbonate compounds selected from sodium bicarbonate, sodium carbonate, potassium bicarbonate, potassium carbonate, ammonium bicarbonate, and ammonium carbonate. The compositions are characterized in that the weight ratio of component (a) to component (b) is in the range of 1:14 to 54:1, and in each case, the weight ratio is determined based on the content of guanidine and carbonate ions in the entire composition. The invention further relates to industrial products comprising the compositions of the invention, and the use of the compositions for stabilizing aqueous industrial products against microbial invasion.

The utility model discloses a sodium-potassium separation system for a potassium-containing sodium carbonate solution. The sodium-potassium separation system comprises an MVR (mechanical vapor recompression) evaporator, a first centrifugal machine, a refrigerator, a second centrifugal machine, a carbonizer and a third centrifugal machine, the method has the advantages that the carbonic acid type sodium sylvite does not need to be transformed into strong acid type sodium sylvite, sodium salt can be separated out through evaporation and concentration, then potassium bicarbonate can be obtained through freezing and carbonization, the separated sodium carbonate and potassium bicarbonate do not need to be crystallized repeatedly, and the separation cost is higher; the obtained sodium carbonate and potassium bicarbonate reach the industrial grade, and have obvious economic value.

A method to produce alkali formate includes introducing a catholyte solution to an electrochemical reaction chamber having a cathode, the catholyte solution comprising a mixture of alkali formate and alkali bicarbonate, introducing carbon dioxide into the electrochemical reaction chamber with a cathode, and applying electricity to the membrane to cause formation and output of alkali formate. A method to produce potassium formate, comprising introducing a catholyte solution to electrochemical reaction chamber, the catholyte solution comprising a mixture of potassium formate and potassium bicarbonate, introducing carbon dioxide into the electrochemical reaction chamber, and applying electricity to the membrane to cause formation and output of potassium formate.

This invention discloses a method for preparing a GLP-1R receptor agonist and a method for preparing its intermediates. The method for preparing the GLP-1R receptor agonist and its intermediates comprises a method for preparing a compound of formula I-1, which includes the following steps: in the presence of an inorganic base, a compound of formula I-1-6 and a compound of formula I-1-7 are subjected to a substitution reaction in a solvent to obtain a compound of formula I-1; wherein the inorganic base includes one or more of potassium carbonate, potassium bicarbonate, sodium carbonate, and sodium bicarbonate. This method has the advantages of high yield and low cost in the preparation of GLP-1R receptor agonists and their intermediates, and shows good application prospects.

According to the method, polyethyleneimine is used as a modifier, corncob is used as a biomass carbon source, potassium bicarbonate is used as an opening agent, water is used as a solvent, and the nitrogen-doped biomass charcoal material is obtained through calcination under inert gas and used for acetylene hydrochlorination reaction. The catalyst has high activity and chloroethylene selectivity in a reaction for preparing chloroethylene through acetylene hydrochlorination in a fixed bed, and has great industrial application value. Under the conditions that the reaction mass space velocity is 2.0 ml / g.min, V (C2H2) / V (HCl) is 1: 1.05 and the reaction temperature is 220 DEG C, the acetylene conversion rate can reach 84.7%, and the vinyl chloride selectivity is greater than 99%. Meanwhile, compared with the activity of a non-nitrogen-doped biomass charcoal material and the activity of nitrogen-doped commercial activated carbon, the activity of the nitrogen-doped biomass charcoal material is improved by 38.2% and 30%, and a novel preparation method of the nitrogen-doped biomass charcoal material is provided for acetylene hydrochlorination reaction.

The present application relates to the technical field of carbon material preparation, in particular to a coal-tar pitch-based heteroatom-doped porous carbon, a preparation method and application thereof, a three-dimensional network boron-nitrogen-phosphorus-doped porous carbon is prepared by taking coal-tar pitch as a precursor, boric acid as a boron source, melamine phosphate as a phosphorus-nitrogen source and potassium bicarbonate as an activating agent. By changing the types of raw materials, the pore structure and morphology of the porous carbon material can be regulated, and a unique three-dimensional porous network structure is constructed. The specific surface area of the obtained porous carbon material is between 522 and 1245 m 2 / g, the addition of boric acid and melamine phosphate realizes the doping of boron, nitrogen and phosphorus elements. The obtained porous carbon material has good rate performance and cycle performance as a zinc ion hybrid capacitor electrode material.

The invention provides a water-based fire extinguishing agent and a preparation method thereof, and belongs to the technical field of fire extinguishing agents. The water-based fire extinguishing agent comprises a component A and a component B, the component A comprises potassium bicarbonate, potassium carbonate, potassium chloride and sodium acetate, and the component B comprises glycerin and water; the water-based fire extinguishing agent disclosed by the invention is clean in components, safe and pollution-free, can exert a remarkable fire extinguishing effect on general fire disasters, oil fire disasters, edible oil fire disasters and other fire disasters occurring in a home environment, and has very good practicability.

The application provides a self-igniting fire extinguishing agent and application thereof, and has the characteristics that the self-igniting fire extinguishing agent comprises the following raw material components in parts by weight: 50-60 parts of potassium nitrate, 5-10 parts of strontium nitrate, 5-10 parts of 5-amino tetrazole, 5-10 parts of azodicarbonamide, 5-10 parts of dicyandiamide, 5-10 parts of melamine, 5-10 parts of phenolic resin, 5-10 parts of shellac resin, 5-10 parts of potassium bicarbonate, 1-5 parts of nitrocellulose and 1-10 parts of vermiculite powder. The self-igniting fire extinguishing agent is applied to fire extinguishing products such as fire extinguishing ropes and fire extinguishing sheets, and has the characteristics of large fire extinguishing range, fast ignition, low-temperature ignition (about 180 DEG C), complete reaction, low turbidity of fire extinguishing gas, low cost, passive temperature-sensing multiple fire extinguishing and the like.

The invention provides a potassium-based carbon capture adsorbent, a preparation method and application, the preparation method comprises the following steps: mixing potassium bicarbonate as a potassium source precursor with deionized water to prepare an impregnation liquid, adding a carrier into the impregnation liquid according to a preset loading capacity, and stirring to obtain a carrier mixture; placing the carrier mixture in a drying oven for heating and drying; extruding, rolling and granulating the dried carrier mixture to obtain adsorbent precursor particles with uniform particle size; the adsorbent precursor particles are subjected to high-temperature calcination, so that potassium bicarbonate is decomposed and converted into potassium carbonate, and the potassium-based carbon capture adsorbent is formed. Potassium bicarbonate is adopted as a potassium source precursor, so that the technical problems of poor forming effect and low mechanical strength caused by deliquescence of potassium carbonate are fundamentally solved, and meanwhile, high mechanical strength and excellent CO2 adsorption performance are achieved.

The invention relates to a comprehensive treatment process for zero-carbon well site petroleum associated gas. Comprising the following steps that 1, associated gas from an oil well and a multifunctional tank is fed into a movable associated gas purification device to be treated, removed water and hydrocarbon return to the multifunctional tank to achieve yield increase and cost reduction, and removed CO2 is guided into a CCUS system; 2, if the amount of removed CO2 is large, the removed CO2 is conveyed to a chemical methanol or potassium bicarbonate preparation process, purified associated gas generates steam through low-temperature catalytic oxidation equipment to push a screw expander to generate power, and high-temperature gas and liquid discharged from the screw expander return to the multifunctional tank to be used for heating crude oil; and thirdly, power is generated through the screw expander, and the generated power is stored in the skid-mounted movable power storage cabinet and can be adjusted and transferred to other power utilization units through the movable energy storage vehicle. Effective comprehensive utilization, micro-grid closed circulation, zero emission and safe production of energy in the island type area of the oil field are achieved, and the problem of remote well site production is solved.

The invention discloses an antibacterial agent, a thermoplastic resin composite material with excellent antibacterial performance and a preparation method of the antibacterial agent, and the preparation method of the antibacterial agent comprises the following steps: dissolving ammonium zinc sulfate, potassium bicarbonate and acetone in deionized water, and carrying out stirring reaction at 40-60 DEG C for 8-12 hours to obtain a solution A; and filtering, washing and drying the solution A, and calcining at 720-780 DEG C to obtain the zinc oxide type antibacterial agent. The antibacterial thermoplastic resin composite material is prepared from the following components in parts by weight: 96.5 to 106.5 parts of thermoplastic resin, 2.5 to 6.5 parts of antibacterial agent and 0.1 to 0.5 part of antioxidant; the antibacterial mechanism of the synthesized zinc oxide type antibacterial agent is that zinc ions can be gradually dissociated, and when the zinc ions are in contact with bacteria, the zinc ions can be combined with active protease in the bacteria to inactivate the active protease, so that the bacteria are killed, and the antibacterial effect is achieved.

The invention relates to a citrus fruit wine fermentation method which comprises the following steps: selecting fresh, mature and non-rotten citrus, cleaning, peeling and pulping to obtain citrus pulp, adding pectinase into the citrus pulp for enzymolysis, and clarifying to obtain citrus clarified juice; the method comprises the following steps: sampling and detecting the total sugar content of the orange clarified juice, adding high fructose corn syrup, adjusting the total sugar content of the orange clarified juice to 16-20%, detecting the pH value of the orange clarified juice, adding potassium bicarbonate or citric acid to adjust the pH value to 3.6-3.8, finally adding 70-90mg / L of potassium metabisulfite, uniformly stirring, standing and sealing for 11-13 hours; adding non-saccharomyces cerevisiae JW14 and saccharomyces cerevisiae DV10 into the orange clarified juice in sequence, performing constant-temperature fermentation at 20 DEG C, and stopping fermentation when the total sugar content is lower than 4g / L; adding 0.8-1g / L naringinase into the fermentation liquor, reacting for 50-60 minutes, and clarifying to obtain the citrus wine; ageing of the citrus wine is accelerated by adopting microwave and irradiation treatment; centrifuging the aged wine, taking supernate, adding a compound clarifying agent for fining, stirring, sealing and storing; and finally filtering the citrus wine, sterilizing and bottling.

The invention relates to a modification method of a graphite negative electrode material, a lithium ion battery negative electrode and a lithium ion battery, the modification method comprises the following steps: precursor preparation: mixing graphite, urea and potassium bicarbonate to obtain a precursor, the mass ratio of the graphite to the urea to the potassium bicarbonate being 3: (2-4): (0-2); performing heat treatment: performing heat treatment on the precursor under the protection of inert gas; and post-treatment: sequentially carrying out acid pickling, water washing, filtering and drying on the precursor subjected to heat treatment to obtain the modified graphite negative electrode material. The method can improve the electrochemical performance of the graphite negative electrode, and has the advantages of simple process, short flow and less pollution in the preparation process.

The application discloses a fine solid-phase sintering method for inhibiting potassium volatilization of potassium niobate ceramic powder, and first, according to the molar ratio of KHCO3:Nb2O5=2-2.02:1, the powder raw materials KHCO3 and Nb2O5 required for preparing different mass of potassium niobate are weighed, and the weighed powder raw materials are subjected to multi-gradient sintering, and according to the quantitative relationship between the mass of the multi-gradient sintered powder raw materials and the sintering time, the potassium niobate powder is preliminarily prepared; then, the preliminarily prepared potassium niobate powder is subjected to second sintering, and the final active potassium niobate powder is obtained; the potassium bicarbonate which is not sensitive to air is used as the raw material to replace the potassium carbonate which is easy to absorb moisture in the air, the volatilization of the K element can be better controlled, the characteristics of the potassium carbonate absorbing moisture and the problem that the prepared potassium niobate ceramic powder deviates from the proportioning are solved; and through controlling the temperature and time when the K element volatilizes, the composition deviation of the potassium niobate caused by the indefinite pre-sintering holding time is avoided, and the powder process for accurately preparing the potassium niobate and other potassium-containing oxide materials is achieved.

The present invention relates to improved phase change material (PCM) formulations for use in temperature-controlled transport packaging. The PCM compositions include one or more inorganic salts selected from sodium sulfate (Na₂SO₄), sodium chloride (NaCl), potassium chloride (KCl), sodium bicarbonate (NaHCO₃), potassium bicarbonate (KHCO₃), magnesium sulfate (MgSO₄), ammonium chloride (NH₄Cl), calcium chloride (CaCl₂), magnesium chloride (MgCl₂), and urea (CO(NH₂)₂), each in controlled concentrations below defined thresholds. The formulations are engineered to undergo phase transitions within a defined temperature range (e.g., 2°C to 8°C) and provide stable thermal buffering over extended periods. The compositions are suitable for integration into passive cooling systems used in the transport of pharmaceuticals, food, and biological materials.

The invention provides a potassium sulfate modified binder for casting and a preparation method thereof, and belongs to the field of casting materials. The potassium sulfate modified binder is composed of the following chemical components: 60 to 65% of core-shell structure potassium sulfate coated gamma-alumina microspheres, 12 to 14% of water glass, 2 to 4% of potassium bicarbonate, 1 to 3% of sublimable urea, 8 to 12% of magnesium potassium silicate fiber, 1 to 2% of boric anhydride, 1 to 3% of a siloxane-terminated polyethylene glycol-polypropylene glycol-block copolymer, 2 to 3% of potassium dihydrogen phosphate, 0.5 to 1.0% of gamma-aminopropyltriethoxysilane, 0.3 to 0.8% of citric acid, 0.5 to 1.0% of tartaric acid, and 0.5 to 1.5% of lithium nitrate. Through precise component selection and function collaborative design, the contradiction that the casting binder adaptive to the intelligent casting island is difficult to balance among room-temperature strength, medium-temperature strength, high-temperature stability and cleaning collapsibility is systematically solved.

The invention relates to the technical field of waste gas treatment and recycling, in particular to a carbon dioxide (CO2) trapping method and system coupled with membrane absorption and crystallization. The method is characterized in that membrane absorption and crystallization are coupled, CO2 in gas is captured by potassium carbonate (K2CO3) absorption liquid to generate potassium bicarbonate (KHCO3), KHCO3 crystals are efficiently extracted by adopting an anti-solvent crystallization technology, pure COgas is separated through high-temperature desorption, a K2CO3 absorbent is regenerated, and meanwhile, an anti-solvent is recycled to realize cyclic utilization. Compared with a traditional tower type CO2 trapping process, the membrane absorption technology used in the method is higher in efficiency, trapping can be achieved at the low temperature and pressure, and the occupied area of equipment is remarkably reduced. In addition, the anti-solvent crystallization process avoids the problems of high energy consumption and low efficiency in KHCO3 separation by a conventional variable-temperature or reactive crystallization method. According to the method, emission reduction and resource utilization of the COgas are achieved, recycling of the K2CO3 absorbent and the anti-solvent is supported, the agent cost of the system and the regeneration energy consumption of the absorbent are remarkably reduced, and good environmental benefits and economic benefits are achieved.