204 results about "Sodium Acetate Trihydrate" patented technology

The invention relates to a phase transition temperature adjusting cup, which comprises a cup body outer casing, a cup body inner casing and a top cover, and the composite phase transition material is filled between the inner casing and the outer casing. The composite phase transition material comprises phase transition material, a nucleating agent, heat conduction filling material and a thickening agent. The phase transition material is selected from one or more of sodium acetate trihydrate, sodium thiosulfate pentahydrate, twelve disodium hydrogen phosphate, sodium sulfate decahydrate and decahydrate. <{EN4}>The nucleating agent is selected from one or more of borax, sodium phosphate dibasic anhydrous, diatomaceous earth, silica, sodium silicate, eight water strontium hydroxide, hexahydrate chloride strontium. <{EN5}>The heat conduction filling material is selected from one or more of graphite, carbon nanotube, expanded graphite, carbon fiber, graphene, three-dimensional graphite foam, silicon carbide, copper powder. <{EN6}>The thickening agent is selected from one of polyacrylic acid emulsion or carboxymethylcellulose sodium. <{EN7}>Compared with existing temperature adjusting cups, the phase transition temperature adjusting cup of the present invention has the advantages of rapid cooling, simple structure convenient operation, 3-4 hours of comfort temperature zone, and not being restricted from external environment.

The invention discloses a low-phase-transition-temperature heat storage material and a preparation method thereof. The low-phase-transition-temperature heat storage material comprises the following components in parts by weight: 55 to 93 parts of sodium acetate trihydrate, 1 to 40 parts of a temperature regulator, 2 to 6 parts of deionized water, 1 to 2 parts of a thickener, and 2 to 3 parts of a nucleating agent. The phase transition heat storage material provided by the invention has the adjustable phase transition temperature of 35 to 56 DEG C, and the phase transition latent heat of 200 to 280 kJ/kg. The application temperature range of a sodium acetate trihydrate system is expanded, and the phase transition heat storage material provided by the invention belongs to solid-liquid phase transition, has high heat storage density and can be effectively applied to the field of civil life.

The invention relates to a clear liquid fermentation medium for clostridium butyricum. The clear liquid fermentation medium, the pH value of which is 7-8, is made from glucose, tryptone, a yeast extract powder, ammonium sulfate, sodium bicarbonate, a maize liquid powder and the like. The clear liquid fermentation medium for clostridium butyricum contains metal salts for promoting the growth of gemma, wherein the metal salts are manganese sulfate, magnesium sulfate and ferrous sulphate. The enrichment medium of the clear liquid fermentation medium for clostridium butyricum contains yeast extract, beef extract, tryptone, glucose, soluble starch, sodium chloride, sodium acetate trihydrate, cysteine hydrochloride, methylene blue at the concentration of 0.5% and distilled water; and the pH is adjusted to 7.1. A fermentation culture method of the clear liquid fermentation medium for clostridium butyricum comprises the following steps of: glycerin tube refrigerated strain activation, heating and optimization, Erlenmeyer flask first-order seed culture, liquid fermentation and spray drying. The production of clostridium butyricum has advantages of simple operation, high amount of zymocyte, high gemma yield, simple post-treatment, less impurities in a bacterial powder sample and high amount of effective live bacteria, and saves cost at large.

Belonging to preparation methods of energy storage microcapsule materials, the invention provides an inorganic hydrated salt phase change energy storage microcapsule and a preparation method thereof. The energy storage microcapsule includes an inorganic hydrated salt serving as the core material and an inorganic material serving as the wall material. The core material is one or more of potassium fluoride dehydrate, sodium acetate trihydrate, sodium thiosulfate pentahydrate, calcium chloride hexahydrate, magnesium sulfate heptahydrate, barium hydroxide octahydrate, sodium sulfate decahydrate, sodium sulfate decahydrate, disodium hydrogen phosphate dodecahydrate, ammonium aluminium sulfate dodecahydrate, aluminum potassium sulfate dodecahydrate, and aluminum sulphate ocatadecahydrate. The wall material is one or more of silicon dioxide, calcium carbonate, alumina and titanium dioxide. The core material accounts for 30%-80% of the mass of the microcapsule composite material, and the wall material accounts for 20%-70% of the mass of the microcapsule energy storage material. The prepared phase change energy storage microcapsule material has a phase transition temperature of 25-100DEG C and a diameter of 0.1-50 micrometers. The phase change energy storage microcapsule has the advantages of high encapsulation rate, good sealing performance, large phase change potential heat value, and simple preparation method, and has great industrial application prospect.

The invention relates to a preparing method of an inorganic hydrous salt phase change microcapsule energy-storage material and belongs to preparing methods of energy-storage materials. The energy-storage material comprises a core material and a wall material, wherein the core material is prepared from one or more of calcium chloride hexahydrate, sodium sulfate decahydrate, sodium thiosulfate pentahydrate, disodium hydrogen phosphate dodecahydrate, sodium acetate trihydrate and sodium carbonate decahydrate inorganic hydrous salt, and the wall material is prepared from one or more of polystyrene, polymethyl methacrylate, poly(ethyl acrylate), polyurethane, cellulose acetate butyrate (CAB) and a diphenylmethane diisocyanate polymer, the core material accounts for 30-80% of the microcapsule energy-storage material by mass, and the wall material is prepared from the polymer and accounts for 20-70% of the microcapsule energy-storage material by mass. The phase change point of the obtained phase change microcapsule energy-storage material ranges from 20 DEG C to 90 DEG C, and the particle size ranges from 1 micrometer to 100 micrometers. The phase change microcapsule energy-storage material prepared with the method is high in encapsulation rate, good in sealing performance, large in phase change latent heat value, simple in preparing method and large in industrial application prospect.

The invention discloses a digital measuring device for a heat expansion rate and working quantity of solid-liquid phase transformation materials under normal pressure, which belongs to the physical measuring field. The invention comprises an inner container, an outer container, an air discharging lock, a pressure sensing device, a water level gauge, a water valve, a sampling control unit, a heat electric couple, and an automatic electric heater. The inner container is arranged crosswise inside the outer container, an emulsion film is arranged on one end of the inner container through a compression ring and an O-shaped rubber ring, the inner container is filled fully with measuring working fluid, the outer container is filled fully with water, the rubber ring is expanded out due to an expansion of the working fluid along water temperature rising inside the outer container, and water level inside the water gauge rises. The heat expansion rate and the working quantity of the solid-liquid phase transformation materials under normal pressure can be calculated out according to liquid levels as volume expansion signal, temperature and pressure signal, which provides a convenient and reliable approach for performance measurement of the solid-liquid phase transformation materials. The invention is applicable to materials as n-pentadecane, n-hexadecane, heptadecane, sodium acetate trihydrate, storing thermal paraffin RT 54 which is produced by a German company, and the similar materials.

The invention relates to a formula and a preparation method of a composite carbon source for denitrification, and relates to prevention and control of water pollution. The formula comprises the following components: 0 to 20% of calcium acetate, 5% to 25% of sodium acetate, 5% to 40% of glucose, 0 to 20% of ethanol, and 40% to 70% of water, of which the total amount is 100%. The formula at least comprises sodium acetate, glucose and water, and the mass percent of the carbon source material in the carbon source formula is 30% to 60%. The preparation method comprises the following steps: injecting tap water into a reaction kettle and stirring, adding calcium hydroxide, and injecting acetic acid; controlling the reaction temperature and pH, and reacting to generate a calcium acetate solution;adding sodium acetate trihydrate until completely dissolved; adding glucose monohydrate and stirring until completely dissolved; when the temperature of the solution is lowered to room temperature, adding ethanol. The solution is pumped out of the reaction kettle to a storage tank for standing, and a supernatant liquid is the prepared composite carbon source for denitrification.

The invention relates to a method utilizing acetic acid in purified terephthalic acid oxidation residues to prepare sodium acetate trihydrate. The method includes the following steps of: 1. purification of dilute acetic acid; 2. neutralization; 3. evaporation; 4. impurities removing; 5. crystallization; 6. drying.

The invention discloses a high thermal conductivity light-heat converting compound phase-changeable heat storage material for a solar water heater and a preparation method thereof. The preparation method comprises the following steps: mixing sodium acetate trihydrate with a nucleating agent, heating to 60-80 DEG C and keeping temperature for 1-3h; adding expanded graphite and uniformly stirring, thereby acquiring a uniform sodium acetate trihydrate/expanded graphite mixture; adding a nanometer light-heat converting material while stirring under the temperature of 60-80 DEG C, and continuouslystirring for 2-4h; cooling to room temperature and then pressing the stirred mixed material into a block in density of 0.5-2g/cm<3>, thereby acquiring the high thermal conductivity light-heat converting compound phase-changeable heat storage material. The high thermal conductivity light-heat converting compound phase-changeable heat storage material not only has ideal heat storage density and heatconductivity but also can effectively convert luminous energy into heat energy and has a heat conductivity coefficient of 2.27-3.52W/(m.K) and a light-heat converting rate of 86.6-91.0%.

The invention relates to a method for treating acidic wastewater of an acrylic acid device. According to the method, a coupling technology is adopted for treating the acidic wastewater; according to the coupling technology, an oxidant is used for oxidizing and removing formaldehyde, acetaldehyde and acraldehyde out of the acidic wastewater; an alkali is used for neutralizing acetic acid and acrylic acid in oxidizing liquid; neutralizing liquid is separated by a membrane to remove water; and finally reduced-pressure concentrating, crystallizing and drying are carried out to prepare acetate. The formaldehyde removing rate of the oxidizing liquid in the method is more than 99.5%; after the neutralizing liquid is subjected to RO (Reverse Osmosis) membrane separation, transmitting liquid reaches national environment protection emission Standard II; the yield of sodium acetate trihydrate is more than 7.7% on the basis of the raw material acidic wastewater; and the sodium acetate trihydrate product can be used as a raw material of a snow-melting agent.

The invention discloses a phase change heat storage material and a preparation method thereof. The phase change heat storage material comprises the following raw materials in parts by weight: 55-70 parts of sodium acetate trihydrate, 1-5 parts of a phase change point conditioning agent, 20-30 parts of a softening agent, 1.08 parts of a nucleating agent, 0.5-1 part of an overcooling-proof agent and 5-15 parts of water. The phase change temperature of the prepared phase change heat storage material is 50-55 DEG C, the latent heat of phase change is 200-250 KJ/kg, the phase change process is reversible, the degree of overcooling is low, softness can be kept after phase change crystallization, and the application potentiality is high in various heat storage fields. The phase change heat storage material is soft and elastic, and can be used for heat storage type heating pads which are particularly used after shower; the phase change heat storage material can also be used for indoor heating appliances of foot pads, cushions and the like.

The invention provides a low-temperature phase-change heat storage material and a preparation method thereof. The heat storage material comprises the following three components in percentage by weight: 90-92% of sodium acetate trihydrate, 4.5-5.8% of sodium phosphate dibasic dodecahydrate and 2.2-4.2% of gelatin. The preparation method comprises the following steps of: grinding all the three components into 30-50 meshes, uniformly mixing the three powders, heating the mixture in a 69-72 DEG C water bath so that all components are fully melted to become a colloidal liquid, uniformly agitating the colloidal liquid, injecting the colloidal liquid into a container, cooling the colloidal liquid into room temperature and sealing the container, wherein the injection volume of the colloidal liquid is 88-90% of the volume of the container. The low-temperature phase-change heat storage material has fewer additive varieties, high stability, great latent heat of phase change and moderate crystallization temperature, and the degree of supercooling does not exceed 2 DEG C. The phase-change heat storage material becomes a colloidal liquid when melted, the phase separation phenomenon is avoided, the preparation process is simple, and the phase-change heat storage material is easy to package and convenient to produce.

The invention discloses a self-regulating temperature phase change energy storage material and a preparation method thereof. The phase change material includes: inorganic phase change material, organic phase change material and expanded perlite, cementitious material, anti-cracking material or slow setting viscosity increasing material. The preparation method of the self-regulating phase change energy storage material of the present invention comprises the steps of: 1) mixing paraffin, butyl palmitate and sodium acetate trihydrate for use; 2) adding expanded porous perlite in a vacuum reactor, Evacuate the air in the kettle, then slowly add the mixture in 1) and stir, slowly pressurize the kettle to make the mixture in 1) penetrate into the expanded porous perlite, and wait until the mixture in 1) completely penetrates into the expanded perlite phase change material component to complete; 3) Mix and stir the substance obtained in 2) with the coagulation material, thermal insulation components, and polymer polymers to obtain a thermal insulation and energy-saving material. The phase-change energy-saving material of the present invention uses a mixture of organic phase-change materials and inorganic material intersecting materials as phase-change components. The product has high heat storage, good chemical stability, and low heat transfer rate. Features such as limitations in the scope of use.

The invention discloses a preparation method of levetiracetam injection. The preparation method of the levetiracetam injection comprises the following steps: every 5ml of injection contains the following components by mass: 500mg of levetiracetam, 8.2mg of sodium acetate trihydrate and 45mg of sodium chloride; cooling water for injection to the temperature below 30 DEG C, adding sodium acetate and sodium chloride, and dissolving; then adding levetiracetam bulk drug in prescribed dose and dissolving; regulating pH value of a solution to be 5.0-6.0 with glacial acetic acid; filtering by virtue of a microfiltration membrane with the thickness of 0.22 microns, filling and sterilizing. The preparation method of the levetiracetam injection is simple in technology, and product quality is stable.

Chicken semen diluent comprises 7.0 to 9.0 g per L of fructose, 4.0 to 6.0 g per L of sodium glutamate, 11.0 to 14.0 g per L of dipotassium phosphate, 0.5 to 0.7 g per L of monopotassium phosphate, 3.0 to 5.0 g per L of TES (N-[tris(hydroxymethyl)methyl]-2-aminoethanesulfonic acid), 4.0 to 0.8 g per L of potassium citrate, 3.0 to 6.0 g per L of sodium acetate trihydrate, 0.2 to 0.4 g per L of anhydrous magnesium chloride, 0.05 to 0.1 g per L of lycopene. A PH (Potential of Hydrogen) value of the diluent is from 7.3 to 7.5 and the osmotic pressure is from 260 to 380 mOsm. The invention also provides preparation and utilization methods for the chicken semen diluent. The preparation and utilization methods for the chicken semen diluent are characterized in that the lycopene is added to the diluent, adjusting modes of the PH value and an osmotic pressure are changed, the diluent is stored in a cryopreservation mode, the semen deposition can be performed immediately after the chicken semen is diluted or after the cold storage, and the diluent also can be used as fundamental liquid for semen cryoprotectant. The chicken semen diluent has the advantages of being simple in preparation method, long in expiration data, free of antibiotics and stable in fertility rate.

The invention provides a low-temperature phase change thermal storage material and a preparation method thereof. The low-temperature phase change thermal storage material comprises the following components by weight: 96-98% of sodium acetate trihydrate, 1-2% of sodium pyrophosphate decahydrate and 1-2% of polyacrylamide. The preparation method comprises the following steps: weighed sodium acetate trihydrate is heated in a reaction kettle to 68.5-71 DEG C; weighed sodium pyrophosphate decahydrate and polyacrylamide are sequentially added in the reaction kettle after the sodium acetate trihydrate is completely melted; stirring and mixing are performed at the same time; the mixture at 68.5-71 DEG C is filled into a container after being stirred fully and uniformly, with the volume dose of the mixture filled into the container being 88-90% of the volume of the container; and the container is sealed after the liquid mixture is cooled to be at room temperature. The invention has the advantages that fewer additives are added; the material is high in stability and phase change latent heat and moderate in crystallization temperature, and doesn't exceed 2 DEG C in degree of supercooling; the phase change thermal storage material is a gelatiniform liquid when melted, so as to avoid a phase separation phenomenon; the preparation process is simple, and the encapsulation is easy; and the production is convenient.

The invention discloses a photosynthetic bacteria culture medium and a preparation method thereof. Each liter of the photosynthetic bacteria culture medium is prepared from the following components: 4g to 10g of sodium acetate trihydrate, 1g to 5g of ammonium sulfate, 1g to 5g of sodium hydrogen carbonate, 0.2g to 0.8g of monopotassium phosphate, 0.2g to 0.8g of magnesium sulfate and the balance of water. The pH value of the photosynthetic bacteria culture medium is 5.5 to 8.5. When the culture medium is prepared, the components are dissolved into the water, the pH value is regulated and then the volume is made to be constant. The photosynthetic bacteria culture medium provided by the invention has simple components and is only prepared from five types of common compounds; high-price substances including yeast extract, T.M storage liquid and the like in an existing culture medium are not used so that the production cost is reduced; compared with an RCVBN culture medium, the cost for producing 1kg of a bacterium culture medium can be saved by a maximum of 85%; the preparation process is simple and feasible and the operability is strong; by utilizing the culture medium to culture, the concentration of photosynthetic bacteria is high and the content of OD660 is up to 2.2.

The invention provides a low-temperature phase-change heat storage material and a preparation method thereof. The low-temperature phase-change heat storage material comprises the following components in percentage by weight: 90%-92% of sodium acetate trihydrate, 3%-5% of tetrasodium pyrophosphate decahydrate, 2%-3% of anhydrous sodium carbonate and 1%-2% of polyacrylamide. The preparation method comprises the following steps of: grinding the four components until the granularity is 30-50 meshes respectively, mixing uniformly, and heating the mixture in a water bath at the temperature of 74-79 DEG C, so as to completely melt all the components to form a colloidal liquid; after stirring uniformly, injecting the colloidal liquid into a container, wherein the injected volume is 88%-90% of the volume of the container; and after the colloidal liquid is cooled to room temperature, sealing the container. According to the invention, the adding ratio of an additive is low, the stability of the material is high, the phase-change latent heat is large, the crystallization temperature is moderate, and the supercooling degree is not more than 2 DEG C; and the phase-change heat storage material is the colloidal liquid in melting, so that the phase separation phenomenon is avoided, the preparation process is simple, the packaging is easy and the production is convenient.

The present invention relates to a phase transition material, it contains trihydrated sodium acetate whose mass ratio is 50-70% and urea with mass ratio of 30-50%. The above-mentioned two materials are uniformly mixed, heated in constant temperature water bath 65-80 deg.c and continuously stirred until the mixture is changed into the transparent liquor. Said phase transition material is nno-toxic and has no corrosion, and its phase transition process is reversible, and can be used for several times, and its phase transition temp. is 26-33 deg.c and its phase transition latent heat is greater than 100 kJ/kg.

The speed of disintegration of tablets containing a water-softening agent, especially water-insoluble, water-softening agent intended as detergency builder for fabric washing is enhanced by incorporating sodium acetate trihydrate, potassium acetate or a mixture thereof. To inhibit caking and facilitate handling during manufacture, smaller particles of another substance are preferably provided at the surface of the crystals of the acetate or citrate.

The invention relates to a method for preparing sodium acetate from acetic acid waste gas through alkaline absorption. The method comprises the following steps: 1, inputting acetic acid waste gas to an alkaline absorption tower through an induced draft fan to carry out multistage circulated alkaline absorption, and emptying the absorbed air, wherein the acetic acid waste gas is generated in a chemical industry or drug production process; 2, controlling the alkaline absorption liquid temperature between 30 DEG C and 80 DEG C, and adding solid sodium hydroxide or sodium carbonate when the pH value is less than or equal to 10; 3, stopping adding alkaline when the concentration of the added sodium hydroxide or sodium carbonate is up to 25-50%, and inputting alkaline absorption liquid to a crystallization kettle when the pH value of the alkaline absorption liquid is up to 8-9; 4, cooling the alkaline absorption liquid to 10 DEG C below zero to 30 DEG C, and carrying out centrifugal swing filtration to obtain sodium acetate trihydrate, or drying at the temperature of 120-150 DEG C to prepare anhydrous sodium acetate; and 5, adding centrifuged mother liquid into the alkaline absorption tower to be recycled, adding a hydrogen dioxide solution or potassium permanganate solution to decolor after the mother liquid turns yellow, wherein the mother liquid can be recycled. No new waste water, waste gas and waste residue are generated, and the production process is clean, environment-friendly, energy-saving and efficient.