119 results about "Potassium bicarbonate" patented technology

The invention discloses a nitrogen-doped carbon-supported transition metal monatomic material as well as a preparation method and application thereof, and belongs to the technical field of inorganic catalyst materials. The preparation method provided by the invention comprises the following steps: (1) grinding a mixture containing a transition metal precursor, a nitrogen source and a carbon source to obtain an initial mixture; and (2) pyrolyzing the initial mixture in an inert gas atmosphere to obtain the nitrogen-doped carbon-supported transition metal monatomic material. The material provided by the invention can efficiently catalyze carbon dioxide to be reduced into carbon monoxide in a carbon dioxide saturated potassium bicarbonate electrolyte, and the selectivity is higher than 90% or above. The preparation method provided by the invention has universality, is easy for large-scale production, and can be used for synthesizing other similar monatomic materials. The nitrogen-doped carbon-supported transition metal monatomic material prepared by the invention is applied to electrochemical carbon dioxide reduction as an electrocatalyst, and can show excellent catalytic activity, selectivity and stability.

The invention relates to the technical field of explosion suppression, in particular to a composite powder explosion suppressant and a design method and a preparation method thereof. The composite powder explosion suppressant is prepared from the following components in parts by mass: 20 to 25 parts of aluminum oxide, 10 to 20 parts of magnesium oxide, 20 to 30 parts of silicon dioxide, 1 to 3 parts of cerium oxide, 10 to 15 parts of potassium bicarbonate, 10 to 15 parts of sodium bicarbonate, 3 to 8 parts of gas-phase hydrophobic white carbon black and 2 to 6 parts of talcum powder. The composite powder explosion suppressant disclosed by the invention is high in explosion suppression efficiency; the metal oxide component screened through quantum chemistry calculation has good explosion suppression performance, and all the components in the composite powder explosion suppressant have a synergistic effect, so that hydrogen explosion can be effectively inhibited.

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 invention provides a membrane-method carbon capture and solidification method. The membrane-method carbon capture and solidification method comprises a multivalent separation electrodialysis system, a cationic resin column, a bipolar membrane electrodialysis system, a carbon dioxide membrane enrichment device, an absorption tower, a pregnant solution pump, a desorption tower and four-compartment replacement electrodialysis. Alkali produced by bipolar membrane electrodialysis is used as absorption liquid, and acid produced by bipolar membrane electrodialysis is used as desorption liquid. According to the invention, the use cost of the adsorbent and the desorption agent is reduced, the internal balance of the agent system is realized, and meanwhile, the preparation of high-purity potassium bicarbonate can be realized by combining with four-compartment replacement electrodialysis. The system can be used for capturing and purifying carbon dioxide in atmosphere or industrial production and refining a potassium bicarbonate product, and compared with traditional carbon capture, absorption liquid and desorption liquid in the system can achieve circulation in the system, and zero emission is achieved.

The invention provides a method for extracting tantalum and niobium through tantalum-niobium ore alkali reduction. The method comprises the steps that tantalum-niobium concentrate is ground, and tantalum-niobium ore powder is obtained; dilute sulphuric acid and a reducing agent are added into the tantalum-niobium ore powder for reduction acid leaching impurity removal, solid-liquid separation is conducted, and tantalum-niobium ore obtained after impurity removal is collected; grinding the tantalum-niobium ore subjected to impurity removal to obtain activated tantalum-niobium ore powder; uniformly mixing the activated tantalum-niobium ore powder, potassium sulfite and potassium bicarbonate according to a preset proportion, adding a fluxing agent, and carrying out reduction roasting in a microwave-assisted heating manner; and leaching the roasted product by using pure water to obtain a tantalate-niobate aqueous solution. Iron and manganese in the tantalum-niobium ore are removed by using an acid reduction impurity removal method under a high-temperature condition; and then the tantalum-niobium concentrate is subjected to secondary mechanical activation through a ball mill, alkali reduction roasting is conducted on the tantalum-niobium concentrate added with the fluxing agent through a microwave-assisted heating method, and finally a roasted product is mixed with a leaching aid and leached in sulfuric acid to obtain the tantalum-niobium leaching solution. The whole process is free of fluorination, and harm to the environment can be reduced.

The utility model discloses a technology for immobilizing carbon dioxide by microorganisms, and particularly relates to a technology for treating and purifying carbon dioxide in hazardous waste incineration waste gas by utilizing a photobioreactor, and the concentration of finally discharged carbon dioxide is close to that of carbon dioxide in the atmosphere. The flue gas treatment amount of the process system is 100m < 3 > / h, and the main process flow of the treatment is as follows: flue gas passes through a condensing heat exchanger, a spray tower, a chemical regulating tank, a photobioreactor and discharge (gas) / recovery (biomass); wherein a spraying agent in the spraying tower is potassium carbonate which reacts with carbon dioxide in the flue gas to generate a potassium bicarbonate solution, and the potassium bicarbonate solution is collected into the chemical adjusting tank and finally flows into the photobioreactor to serve as a supplementary carbon source; algae liquid discharged by the photobioreactor is collected and then subjected to filter pressing treatment, filtrate is circulated to a spray tower water collecting tank and used for preparing spray liquid, and water circulation of the whole system is achieved.

Disclosed herein are clay swelling inhibitor compositions and methods for using them to treat oil and gas wells and subterranean formations. In a specific embodiment, the clay swelling inhibitor composition includes: calcium chloride from about 40 wt % to about 60 wt %; potassium bicarbonate from about 15 wt % to about 25 wt %; potassium formate from about 25 wt % to about 35 wt %; and additives. In another specific embodiment, the clay swelling inhibitor composition includes: potassium citrate from about 50 wt % to about 60 wt %; cesium formate from about 20 wt % to about 30 wt %; potassium acetate from about 15 wt % to about 25 wt %; and additives.

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 present invention provides a polyamide 66 resin and a preparation method thereof. The polyamide 66 resin comprises the following components in parts by weight: 100 parts of polyamide 66, 0.0002-0.01 parts of a stabilizer and 0.0005-0.005 parts of a lubricant; the polyamide 66 comprises the following raw material components in parts by weight: 115 parts of polyamide 66 salt, 0.0001-0.002 parts of a first catalyst and 0.00034-0.0014 parts of a second catalyst; the first catalyst is selected from any one of sodium bicarbonate, potassium bicarbonate or sodium carbonate or a combination of at least two; the second catalyst is selected from sodium hypophosphite and / or acetic acid. The polyamide 66 resin provided by the present invention has good high temperature resistance, lubricity and fluidity.

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 discloses a preparation method of copper modified lignin carbon nanospheres, which comprises the following steps: adding lignin into tetrahydrofuran, uniformly dissolving, adding water, stirring to remove tetrahydrofuran, and carrying out hydrothermal reaction to obtain lignin nanospheres; zinc nitrate and copper chloride are added into water, and a solution A is obtained; adding adenine into DMF (Dimethyl Formamide) and heating until the adenine is dissolved to obtain a solution Adding lignin nanospheres into water, and ultrasonically dispersing uniformly to obtain a solution C; and adding the solution A into the solution B, then adding the solution C, continuously stirring, centrifuging, and freeze-drying. And drying, mixing and grinding with potassium bicarbonate, and then transferring into a tubular furnace for two-stage calcination to obtain the copper-modified lignin carbon nanospheres. The lignin nanospheres are prepared by adopting a solvent exchange method and are compounded with transition metal copper to realize high-added-value utilization of lignin, and the lignin nanospheres can be used for degrading water pollutants and water-based zinc ion batteries and have excellent degradation effect and electrochemical performance.

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.

The invention discloses a composite material for automotive upholstery and a preparation process thereof, and relates to the technical field of composites.The composite material is formed by compounding two layers of materials and comprises an inner flame-retardant layer and an outer wear-resistant layer; the flame-retardant layer is prepared from the following components in parts by mass: 20-40 parts of polypropylene fiber, 10-30 parts of modified polypropylene, 5-10 parts of glass fiber, 1-3 parts of a flame retardant, 1-3 parts of deionized water and 0.1-0.5 part of an antioxidant, and the wear-resistant layer is prepared from the following components in parts by mass: 20-30 parts of polypropylene, 5-15 parts of phenolic resin, 2-4 parts of an anti-scraping agent, 0.5-1 part of a silane coupling agent, 0.05-0.2 part of an antibacterial aid and alpha-phase nano aluminum oxide. The flame retardant comprises the following components in parts by mass: 20-40 parts of lignin, 5-10 parts of expanded graphite and 5-10 parts of inorganic mineral powder, and the inorganic mineral powder comprises one of calcium carbonate, aluminum carbonate, potassium bicarbonate and magnesium carbonate.

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.

The invention discloses an expanding agent, an expanding adhesive, a heating removable protective film and a preparation method, and relates to the technical field of adhesives. The expanding agent provided by the invention comprises the following components in parts by weight: 18-22 parts of methyl acrylate; 22 to 27 parts of butyl acrylate; 53 to 56 parts of acrylonitrile; 0.5 to 1 part of an initiator; 1-3 parts of a dispersant; and 20-30 parts of potassium bicarbonate. In the formula, methyl acrylate and butyl acrylate are used as flexible monomers to endow a polymer chain with good ductility, and the rigid structure of acrylonitrile enhances the mechanical strength and thermal stability of the polymer. The three components are copolymerized under the action of an initiator to form an acrylic polymer shell which uniformly coats potassium bicarbonate particles, so that high dispersity and interfacial compatibility of the expanding agent in the adhesive are ensured, and performance degradation or appearance defects caused by traditional turbid liquid are avoided. Through scientific proportioning and synergistic effect, the compatibility and thermal response performance of an adhesive system are remarkably optimized, and the performance of an expansion adhesive and a heating removable protective film is improved.

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.

The invention discloses a method for producing hydrogen peroxide by two-electron electrocatalytic water oxidation of calcium carbonate-based natural substances, which comprises the following steps: (1) preparation of an anode material: loading the calcium carbonate-based natural substances such as egg shell powder, calcite powder, clam shell powder, coral powder and the like on a substrate through a naphthol binder to serve as the anode material; and (2) carrying out a reaction for synthesizing hydrogen peroxide by electro-catalysis water oxidation: constructing an electro-catalysis environment and electrochemical double cells, separating a cathode and an anode by a nafion membrane only allowing protons to pass through, taking a graphite sheet as the cathode, and taking a mixed solution of potassium carbonate and potassium bicarbonate as an electrolyte. And carrying out electro-catalysis water oxidation reaction to obtain a high-concentration hydrogen peroxide solution. The method simultaneously meets the requirements of resource utilization of the calcium carbonate waste and production of high-concentration hydrogen peroxide, and has the advantages of environmental friendliness and certain economic value.

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.

The present invention discloses a graphene quantum dot-supported CuO catalyst for electrocatalytic production of ethylene from high-current carbon dioxide, and its preparation method and application. In the present invention, two high-purity graphite carbon rods are inserted into a potassium bicarbonate solution, electrode clips are clamped, and electricity is passed to electrolytically strip the carbon material on the surface of the graphite rods to obtain graphene quantum dots. The supernatant is taken by centrifugal filtration, filled into a dialysis bag and dialyzed to remove potassium bicarbonate salt to obtain an aqueous solution of graphene quantum dots; the aqueous solution of graphene quantum dots is mixed with solid powder of CuO nanosheets, ethanol is added, stirred, the precipitate is taken by centrifugal filtration, and dried to obtain a graphene quantum dot-supported CuO catalyst. The graphene quantum dot-supported CuO catalyst prepared by the present invention effectively solves the problem of too rapid evolution of the catalyst structure due to electroreduction during the reaction process, and has a high yield and is easy to produce on a large scale, and shows good activity and stability in the electrochemical conversion of carbon dioxide to ethylene.

The invention relates to a ready-to-use serum-free DMSO-free cell cryopreservation solution, a preparation method and application, and relates to the field of cell cryopreservation, and the cell cryopreservation solution comprises the following components: sodium lactobionate, calcium chloride, magnesium chloride, potassium dihydrogen phosphate, potassium bicarbonate, potassium chloride, sucrose, mannose, trehalose, hydroxyethyl starch, 4-hydroxyethyl piperazine ethanesulfonic acid, water-soluble vitamin E and ethylene glycol. The cell cryopreservation liquid provided by the invention has the advantages of high efficiency, no foreign protein, easiness in use and the like, cells resuscitated after cryopreservation are high in activity, and the cell characteristics can be kept after resuscitation; the cell freezing medium does not contain serum and other foreign proteins, so that the influence of endotoxin, latent virus and inter-batch difference is avoided; the cell freezing medium disclosed by the invention does not contain DMSO, so that the toxic effect on cells is further reduced, and the cell characteristics are favorably maintained; the cell freezing medium can be directly stored in a refrigerator at the temperature of-80 DEG C without programmed cooling, and is quick and convenient to use.