58results about How to "Low concentration temperature" patented technology

The invention discloses a method for equivalent dialysis through directly adopting membrane treatment. The method comprises the following steps: S1: storing the filtrate of Acesulfame in a filtrate storage tank, which is taken as a stock solution; S2: adopting a hot water circulation system to increase the temperature of the stock solution in the filtrate storage tank, setting membrane ingress pressure and membrane egress pressure simultaneously, and through transmission and concentration of an organic membrane, allowing a clear membrane liquid to flow to a clear membrane liquid storage tank for recycle; S3: when the clear membrane liquid flux in the clear membrane liquid storage tank drops to 20-60L / PM, using the same amount of water to dialyze, and dialyzing the Acesulfame out and recycling; S4: discharging the residual liquid in a circulation tank to a liquid waste disposing center directly so as to have liquid waste disposal; and S5: washing and detecting membrane equipment. The method disclosed by the invention adopts the hot water circulation system for heating and omits the concentration treating and recycling process, so that the energy consumption is saved, the concentration temperature is low, the material is difficult to break down, the purposes of liquid decoloration and organic salt treatment are realized, the product obtained can be recycled directly, and the equipment has a simple structure and a low treatment cost.

The invention discloses a production process of poly-crystal rocky candy. The production process comprises the following six steps: by taking first-grade white sugar as a raw material, dissolving the sugar, micro-filtering and clarifying, desalting and decolorizing by using ion exchange resin, concentrating in vacuum, charging seeds for crystallization, drying and packaging to produce the poly-crystal rocky candy. The poly-crystal rocky candy produced by the method disclosed by the invention is sweet and delicious in taste and white and transparent in color and luster; no sodium hydrosulfite is added for color protection during the overall production, so the product is environmental friendly and safe; the crystallization rate of the rocky candy is above 95%; the problem of low crystallization rate during production of the poly-crystal rocky candy for a long time is solved.

The invention relates to a tobacco extracting solution concentrating technology, and belongs to the technical field of the tobacco extracting solution concentration. The technology comprises the following steps of: after performing primary purification on a tobacco water extracting solution, micro-filtering, performing positive permeation concentration on micro-filtering permeate, and recycling adiluted draw solution formed by the positive permeation concentration through using an electrodialysis or salt sun-drying mode. The technology has the advantages of low operating pressure, and high safety; low concentration temperature, and small temperature rising during a concentrating process, without heat-exchanging and cooling; and small membrane pollution, simple and convenient washing, andlow washing frequency. At the same time, the technology is high in concentration degree, and concentration of the concentrated tobacco extract can reach 60%. In a tobacco extracting solution concentrating working procedure of reconstituted tobaccos by a papermaking process, evaporation and concentration can be completely replaced. In the concentrating process, loss of materials, nicotine and volatile components is small, energy consumption is low, and popularization and application are easy.

The invention relates to a continuous triple-effect falling-film concentration and vacuum crystallization system and method in potassium nitrate production through a double-decomposition method. The continuous triple-effect falling-film concentration and vacuum crystallization system comprises a mixing tank, a concentration preheater, a backflow triple-effect concentration device, an ammonium chloride crystallizer, a thickener and a centrifuge, which are sequentially connected. The continuous triple-effect falling-film concentration and vacuum crystallization method comprises the following steps: adding potassium nitrate mother liquid and ammonium nitrate into the mixing tank for uniformly mixing, subsequently conveying to the mixture to the concentration preheater for preheating, feeding into the backflow triple-effect concentration device for concentration, feeding into the ammonium chloride crystallizer for crystallization after concentration, further sequentially feeding into the thickener and the centrifuge, separating a solid ammonium chloride product from the centrifuge, and returning the separated solution as a circulating mother liquid to a potassium nitrate production process through the double-decomposition method for circulation. Under the condition that the number of concentration equipment is not increased, the continuous triple-effect falling-film concentration and vacuum crystallization system and method in potassium nitrate production through double-decomposition method, provided by the invention, can achieve large-scale and continuous production, and the production efficiency is improved.

The invention relates to a method for purifying high purity ammonium rhenate from a liquid containing ammonium rhenate. The method comprises the following steps of: a, concentrating the liquid containing ammonium rhenate and adding a hydrogen dioxide liquid into the concentrated liquid; stirring and removing surface foam of the mixed liquid and filtering; b, cooling the filtrate obtained in the step a, then, filtering and taking out crystallized substances and performing centrifugal dewatering treatment, and placing the crystallized substances again to an oven to dry to prepare the high purity ammonium rhenate; and c, mixing the filtrate obtained by the step b with the liquid containing ammonium rhenate and repeating the step a and the step b to prepare a high purity ammonium rhenate product. According to the invention, the concentration temperature is reduced, the loss of rhenium entrained in vapor volatilization is reduced, and the rhenium recovery rate is improved. Compared with the prior art, the method is free from ammonia or ammonia water, and environment-friendly in the production process, and meanwhile, low valence metal ions which are difficult to remove are converted into high valence metal ions which are easy to remove by the hydrogen peroxide liquid. The low valence rhenate is converted into the high valence rhenate, so that the purity of the ammonium rhenate product is ensured.

The invention relates to a continuous potassium nitrate production system and a production method combined with production of liquid ammonium nitrate. The system comprises a potassium nitrate production system and a liquid ammonium nitrate production system, wherein the potassium nitrate production system comprises a dissolving tank, a potassium nitrate vacuum crystalizing device, a primary thickener, a primary centrifugal machine, a mixing tank, a concentration preheater, a reflux triple effect concentrating device, a vacuum continuous crystalizing device, a secondary thickener, and a secondary centrifugal machine, wherein the liquid ammonium nitrate production system comprises an ammonia evaporator, a gaseous ammonia filter, an ammonia preheater, a tubular reactor, a neutralizing scrubbing tower and a flash tank. The invention develops the new continuous potassium nitrate production system combined with production of liquid ammonium nitrate, so that the efficiency of potassium nitrate production technology is improved, the crystalizing process is controlled more accurately, and the potassium nitrate crystalline quality and yield are more stable.

The invention relates to the food field, in particular to a pepper flavored oil and a method for preparing the same. The invention provides a pepper flavored oil which comprises pepper oleoresin and edible oil, wherein the mass ratio of the pepper oleoresin to the edible oil is 1: 5 to 1: 25; and the pepper oleoresin contains 45-48% of piperine and 24-28% of pepper oil. The invention also provides the method for preparing the pepper flavored oil, which specifically comprises the following steps of: mixing the pepper oleoresin with the edible oil, thereby obtaining coarse pepper flavored oil, and then emulsifying, homogenizing and blending, thereby obtaining the finished product pepper flavored oil. The pepper flavored oil provided by the invention is clear in color and luster, transparent and lustrous, pure and rich in smell, long in aftertaste, and lasting and rich in biting taste of the pepper as the content of impurities is reduced while the content of the pepper oil and the piperine in the pepper flavored oil is guaranteed; and no toxic and harmful chemical reagent is left.

The invention relates to a continuous potassium nitrate production system combined with liquid ammonium nitrate production. The system comprises a potassium nitrate production system and a liquid ammonium nitrate production system, wherein the potassium nitrate production system comprises a dissolving tank, a potassium nitrate vacuum crystallization device, a primary thickener, a primary centrifuge, a mixing tank, a concentration preheater, a forced circulation backflow counterflow triple-effect concentrator, a vacuum continuous crystallizer, a secondary thickener and a secondary centrifuge; the liquid ammonium nitrate production system comprises an ammonia evaporator, an ammonia gas filter, an ammonia preheater, a tubular reactor, a neutralization washing tower and a flash drum. A set of continuous potassium nitrate production novel-technology combined with liquid ammonium nitrate production is developed by the invention, so that the production efficiency of the potassium nitrate production technology is improved, the crystallization process is controlled more accurately, and the quality and yield of crystallized potassium nitrate are more stable.

The invention discloses a reaction heat comprehensive utilization system and a reaction heat comprehensive utilization method in coproduction of potassium nitrate and ammonium chloride. The system comprises a tubular reactor, a flash tank, a neutralizing washing tower, a neutralizing washing pump and a countercurrent triple-effect concentration device. By combining production of a raw material ammonium nitrate with a production process of potassium nitrate and ammonium chloride together, the problem that in the prior art, the heat efficiency is very low and is adverse to energy conservation and consumption reduction is solved by using high temperature process steam in a ammonium nitrate flash process.

The invention discloses a method for extracting anthocyanidin from black chokeberries. Azeotropic liquid (an EM reagent for short) of ethyl acetate and methyl alcohol is adopted as an extracting solvent for anthocyanidin in black chokeberries by replacing different ratios of ethanol solutions, both anthocyanidin and anthocyanidin aglycon can be extracted out, and the anthocyanidin extraction rate is increased; meanwhile, when the EM reagent is used as the extracting solvent for anthocyanidin, polarity is appropriate, few impurities with large polarity and few impurities with small polarity are dissolved out, column chromatography isolation and purification are not needed, the anthocyanidin yield is high, and the concentrated extracting solution can be directly subjected to spray drying or vacuum drying to form solid. Accordingly, by means of the method, industrial large-scale production is promoted, meanwhile, the production period is shortened, and the production cost is reduced.

The invention relates to a method for extracting total alkaloid in stem bark and leaves of nauclea offcinalis, which comprises the steps of (1) performing filtering extraction by utilizing acid water solution of alcohol, (2) preparing total alkaloid concentrated liquid, (3) preparing total alkaloid dry powder or dry extraction, and (4) measuring total alkaloid content. The method for extracting the total alkaloid in the stem bark and the leaves of the nauclea offcinalis has the advantages of (1) reducing extraction temperature and concentration temperature, reducing heated time of the extraction, saving energy consumption, improving leaching efficiency, leaching ratio and leaching amount of active components of the alkaloid, avoiding or reducing damage or deterioration of the alkaloid with poor stability, and being capable of effectively obtaining the total alkaloid extraction or the total alkaloid dry powder of the nauclea offcinalis; (2) reducing preparation procedures and loss of the total alkaloid; (3) enabling the density of the total alkaloid obtained by the acid water solution of the alcohol to be improved by one third and enabling the types of active alkaloid to be increased by over one time; and (4) providing a simple measurement method for measuring the total alkali in the extraction of the nauclea offcinalis, and selecting wavelength scope of measurement of the total alkaloid.

The invention provides a method for preconcentration and wall breaking of microorganism and extraction of microorganism oil, the method is as follows: adjusting the pH value of a fermentation liquid to the range of 10-14, concentrating the fermentation liquid, obtained by the adjusting step, for cell wall breaking of the microorganism, and then extracting oil and other active ingredients after the cell wall breaking. According to the method, preconcentration and wall breaking can be completed in one step, the wall breaking can be completed in the concentration step, the process is simple, the guarant viscosity after the ell wall breaking is low, the follow-up oil extraction operation is facilitated, and the oil and other active ingredients in microorganism cells can be extracted by a simple and easy method.

Aiming at the problem that the acquisition of formaldehyde with low water content decides the feasibility of DMMn synthesis and directly influences the product synthesis conversion rate, aldehyde canbe concentrated to 85 percent through a vacuum concentration system, the water content in the formaldehyde is dewatered to 0.5 to 3 percent in a dewatering tower, methyl alcohol with a low boiling point is condensed with the formaldehyde, the polymerization degree controllability of the formaldehyde in a liquid phase is realized, and a formaldehyde alcoholic solution with a polymerization degree nbeing equal to 3 to 10 is obtained, so that the most suitable reaction raw material-the formaldehyde alcoholic solution with a low water content is found for polymethoxy dimethyl ether synthesis. Theformaldehyde vacuum concentration system is combined with a stripping tower principle, so that the formaldehyde alcoholic solution with the low water content is prepared, the water content in the reaction system is reduced, the product decomposition is avoided, the DMMn synthesis conversation rate is efficiently improved, meanwhile, the risk of polymerization during a high-concentration formaldehyde concentration process is avoided due to the introduction of the formaldehyde, the concentration temperature is reduced, the generation of formic acid is reduced, and an advantageous effect is achieved on separating a follow-up polymethoxy dimethyl ether product.

The invention provides a method for preconcentration and wall breaking of microorganism and extraction of microorganism oil, the method is as follows: adjusting the pH value of a fermentation liquid to the range of 10-14, concentrating the fermentation liquid, obtained by the adjusting step, for cell wall breaking of the microorganism, and then extracting oil and other active ingredients after the cell wall breaking. According to the method, preconcentration and wall breaking can be completed in one step, the wall breaking can be completed in the concentration step, the process is simple, the guarant viscosity after the ell wall breaking is low, the follow-up oil extraction operation is facilitated, and the oil and other active ingredients in microorganism cells can be extracted by a simple and easy method.

The invention relates to a method and a device for continuously concentrating glyoxylic acid. A glyoxylic acid solution is concentrated by adopting a method of continuously adding a stock solution and extracting a concentrated solution. The method comprises the following steps: a switch-on vacuum debugging process, an early feeding concentration stabilizing process, a continuous feeding and extraction adjusting process, a normal continuous concentration process, a distillate intermittent transfer process and a concentration ending halt process. The device comprises an evaporator, a heater, a demister, a condenser, a receiving tank, a buffer tank, a scrubber tank, a high vacuum unit, a stock solution container, a concentrated solution container, a distillate container, an extracting pump, a distillate delivery pump, a stock solution feeding flow meter, a concentrated solution extraction flow meter and the like. The method and the device can realize continuous production of concentrated glyoxylic acid, the concentration efficiency is high, the equipment capacity can be obviously improved, the materials are short in heating time and low in temperature, the product is high in quality, high in yield and low in energy consumption, the service life of glassed steel equipment can be prolonged, and the labor intensity of workers is reduced.

The invention discloses a preparation method of a semen armeniacae amarae and thunberg fritillary bulb oral liquid for relieving cough and resolving phlegm. The preparation method is characterized by comprising the following steps of: jointly decocting sweet root bark of white mulberry, fried semen armeniacae amarae, thunberg fritillary bulb and liquorice to reserve an extracting liquid, obtaining clear paste through three-effect decompression concentration, sinking the clear paste by water and centrifugalizing and reserving a clear liquid; independently decocting sweet polygala tenuifolia, independently storing the extracting liquid, and combining the extracting liquid with the clear liquid; adjusting the pH twice when the volume is fixed and before filling; sterilizing for 40 minutes at 103 DEG C and filling. The preparation method disclosed by the invention has the beneficial effects that 1, the polygala tenuifolia is independently decocted to avoid the problem that the polygala tenuifolia is bubbled to lead to loss of effective components when the extracting liquid is concentrated; 2, three-effect decompression concentration is adopted, so that not only can the concentration temperature be low, the moisture is quick to evaporate, the concentration time is short and the energy consumption is reduced, but also the effective components of the product are effectively prevented from being damaged by high temperature foremost; 3, the pH value is adjusted twice to ensure the stability of product quality; 4, insulative overnight aging at 70-80 DEG C can be used for effectively preventing the liquid medicine from rancidity; 5, the oral liquid is sterilized for 40 minutes at 103 DEG C, and the temperature is moderate, so that the effective components of the liquid medicine are effectively protected.

The invention provides deerskin glue. According to the formula, the glue contains the following raw materials: 90%-95% of cultured deerskin serving as the main raw material, 0.1%-0.5% of added or not-added flavor ingredients, 3%-10% of rock candy, 3%-10% of rice wine, 0.1%-0.5% of soybean oil. A production process of the deerskin glue comprises the following steps: cleaning; cutting; sterilizing at a high temperature; cooking at a high temperature; adding the flavor ingredients and cooking; filtering the glue solution; adding trypsin and hydrolyzing; concentrating; adding the flavor ingredientextract; continuing to concentrate the glue solution; heating and stirring; cooling; naturally drying cut glue pieces; and finally packing. The deerskin glue and the production process thereof, whichare provided by the invention, have the advantages that the flavor ingredients are added at a specific temperature and time to enhance the mouthfeel of the deerskin glue; the processes of dehairing and impurity removing are increased before processing and the sterilization process is increased to improve the product purity; the trypsin is added and hydrolysis is carried out to ensure that the product is more transparent and the protein molecules are more uniform; and the concentration temperature is reduced and the glue is prevented from overcooking to ensure that the production quality is increased and the product quality is finally improved.

The invention provides low-nicotine paper-making process reconstituted tobacco and a preparation method and application thereof. The preparation method of the low-nicotine paper-making process reconstituted tobacco comprises the following steps of: mixing tobacco fibers, wood pulp fibers and filler, then adding water, and performing heating extraction; centrifuging the leaching solution to obtaina tobacco extracting solution; pulping the solid matter according to a papermaking process, and forming to obtain a substrate; concentrating the tobacco extracting solution under reduced pressure to obtain water paste; adding ammonia water into the water paste, performing uniform stirring, mixing with an organic solvent, and performing extracting; separating the solution after extraction to obtainan organic phase and a water phase; mixing the water phase with an ethanol solution, performing uniform stirring, and performing concentrating under reduced pressure to obtain a coating solution; andcoating a substrate with the coating solution, and performing drying to obtain the low-nicotine paper-making process reconstituted tobacco. The low-nicotine paper-making method reconstituted tobaccoprepared through adoption of the method is low in nicotine content, can replace part of tobacco raw materials to be added into traditional or novel cigarettes, can effectively reduce tar, nicotine andother harmful substances in smoke, and reduces harm to the human body.

The invention discloses a method for treating high-salt organic wastewater. According to the method, concentrated extracted salt is combined with biochemical treatment, and inorganic matters and organic matters are removed step by step, so that up-to-standard emission of the wastewater is realized. The method comprises the specific steps: adding a dehydrating agent into the wastewater which is heated to be 40 DEG C to 80 DEG C until the wastewater is saturated; cooling the saturated wastewater to be -5 DEG C to 5 DEG C; separating out mixed salt crystals; centrifuging and separating crystal separation wastewater to obtain the mixed salt crystals and a concentrated mother solution containing high organic matter content; washing the mixed salt crystals to obtain dehydrating agent hydrate crystals; evaporating a washing mother solution and carrying out concentration and salt extraction; heating the dehydrating agent hydrate crystals to be 95 DEG C to 150 DEG C; carrying out crystal transformation dehydration to obtain a regenerated dehydrating agent and condensed water; carrying out 3 to 5 times of the concentration and salt extraction on the concentrated mother solution containing the high organic matter content to obtain a salt-containing concentrated mother solution containing the high organic matter content; diluting the salt-containing concentrated mother solution containing the high organic matter content with the condensed water and carrying out the biochemical treatment to obtain up-to-standard wastewater. The method disclosed by the invention has moderate process conditions; the dehydrating agent can be circularly utilized; the energy consumption is low, the treatment cost is low and the emission standards of the wastewater are met.

The invention relates to a continuous system and method for producing potassium nitrate through a double decomposition method. The system comprises a dissolving tank, a potassium nitrate vacuum crystallization device, a primary thickener, a primary centrifuge, a material mixing tank, a concentrating preheating device, a backflow three-effect concentrating device, a continuous vacuum crystallizer, a secondary thickener and a secondary centrifuge. The invention further relates to the continuous method for producing the potassium nitrate through the double decomposition method. Through the system and the method, a new design thought of vacuum crystallization of potassium nitrate is adopted, the crystallization process can be controlled more precisely, the crystallization quality and the yield of the potassium nitrate are more stable, continuous feeding and continuous discharging can be achieved, and continuous production is achieved.

The invention discloses a method for vacuum microwave concentration of fruit juice. The method comprises the following steps: performing vacuum-pumping on raw fruit juice, performing microwave heating, and monitoring the temperature of the raw fruit juice, wherein the temperature at the beginning of heating is lower as heat is absorbed by evaporation of the raw fruit juice; reducing the heating power when the temperature of material begins to rise and exceeds 50 DEG C; and stopping heating when the temperature of the material achieves 60 DEG C. By adopting the method, the concentration temperature is low, the concentration speed is fast, the quality of the obtained fruit juice is high, and the inherent flavor is not lost basically after dilution. Simultaneously, by adopting the method, equipment has small possibility of scaling, and the energy consumption is low.

The invention belongs to the field of drug preparation and particularly relates to a preparation method of high-purity ethyl 4-chloro-3-hydroxybutyrate. Ethyl 4-chloroacetoacetate is used as a raw material to carry out reacting with ethanol as a solvent and sodium borohydride as a reducing agent; the reacted liquid is dewatered, neutralizing with glacial acetic acid is performed until neutrality,filtering is performed to remove salts, vacuum concentration is performed, a solvent is added to carry out dissolving, washing with water is carried out to remove salts, concentrating is performed, and vacuum distillation is performed to obtain the high-purity ethyl 4-chloro-3-hydroxybutyrate. The ethyl 4-chloro-3-hydroxybutyrate is an intermediate of oxiracetam, a drug to treat senile dementia; as registration of new medicines in China requires research on impurities of pharmaceutical intermediates, namely research on impurity whereabouts and influence of impurities on products, the existingpreparation method of ethyl 4-chloro-3-hydroxybutyrate causes many impurities and low purity, only 84.9%; the preparation method has a reasonable ratio of materials, has good simplicity and low cost,and enables the purity to reach 99.5% and above and the yield to reach 90% and above, and the prepared samples may meet the requirements for medicine registration.

The invention relates to a method of extracting and purifying rhubarb total anthraquinone from rhubarb. The method comprises the steps of extracting the rhubarb by a flash extraction method, recovering part of alcohol from a rhubarb extract, adding a polymeric flocculant into liquor for adsorption and clarification, taking clear supernate for continued concentration, adding acid to regulate acidity to separate out a precipitate, dissolving the precipitate with alkaline, performing centrifugation to remove impurities, and adding acid to separate out higher-content rhubarb total anthraquinone. Apreparation technology is time-saving, simple and convenient in operation, energy-saving and environment-friendly; a product is free from residual toxic solvent; and the method is suitable for industrial production of rhubarb total anthraquinone by using the rhubarb.

The invention relates to a process for concentrating tobacco extract, belonging to the technical field of concentrating tobacco extract. The process is to micro-filter the tobacco water extract after primary purification, carry out forward osmosis concentration on the microfiltration permeate, and recover and recycle the diluted drawing solution formed by the forward osmosis concentration by electrodialysis or drying salt. The process of the invention has low operating pressure and high safety; the concentration temperature is low, the temperature rise is small during concentration, and heat exchange and temperature reduction are not required; the membrane pollution is light, the cleaning is simple and the cleaning frequency is low. At the same time, the process of the present invention has a high degree of concentration, and the concentration of the tobacco extract after concentration can reach 60%; in the process of concentrating the tobacco extract of reconstituted tobacco leaves in the papermaking method, it can completely replace evaporation and concentration; and the loss of materials, nicotine and volatile components in the process of concentration Small, low energy consumption, easy to popularize and apply.

The invention provides a preparation method of androstane-17beta-N-(2,5-bis (trifluoromethyl)) benzamide. The preparation method comprises the following steps: (1) in the presence of an acid-binding agent, carrying out acyl chloride forming reaction between androstane-17beta carboxylic acid and thionyl chloride to obtain androstane-17beta acyl chloride; (2) enabling the androstane-17beta acyl chloride and 2,5-bis(trifluoromethyl) aniline to generate amide forming reaction in the presence of a hydrogen stripping agent to obtain androstane-17beta-N-(2,5-bis (trifluoromethyl)) benzamide, wherein the acid-binding agent is anhydrous potassium carbonate fine powder. The preparation method disclosed by the invention can be used for simply preparing the androstane-17beta-N-(2,5-bis (trifluoromethyl)) benzamide with low toxicity, high quality, high yield and low cost.

The invention discloses a method for vacuum microwave concentration of fruit juice. The method comprises the following steps: performing vacuum-pumping on raw fruit juice, performing microwave heating, and monitoring the temperature of the raw fruit juice, wherein the temperature at the beginning of heating is lower as heat is absorbed by evaporation of the raw fruit juice; reducing the heating power when the temperature of material begins to rise and exceeds 50 DEG C; and stopping heating when the temperature of the material achieves 60 DEG C. By adopting the method, the concentration temperature is low, the concentration speed is fast, the quality of the obtained fruit juice is high, and the inherent flavor is not lost basically after dilution. Simultaneously, by adopting the method, equipment has small possibility of scaling, and the energy consumption is low.

The invention provides a preparation process of blueberry concentrated juice with high content of anthocyanin. According to the preparation process provided by the invention, pectase is adopted for performing enzymolysis on blueberry pulp, chitosan is adopted as a clarifying agent for obtaining clear blueberry juice, a decompression concentration process is adopted for preparing the blueberry concentrated juice, and microwave sterilization is adopted for sterilizing the blueberry concentrated juice. The preparation process comprises the following steps of: selecting blueberry fruits in vaccinium ashei gardenblue species; extracting the blueberry juice, and adding the pectase to perform the enzymolysis on the blueberry pulp; clarifying the blueberry juice, and adding the chitosan as the clarifying agent for obtaining the clear blueberry juice; concentrating the blueberry juice, and adopting the decompression concentration to obtain the blueberry concentrated juice; and performing sterile filling on the blueberry juice, and adopting the microwave sterilization to sterilize the blueberry concentrated juice, wherein the content of soluble solids in the blueberry concentrated juice is 60%-75%, and the content of the anthocyanin is 1.925g / L-3.384g / L. The preparation process provided by the invention can not only effectively prevent the loss of the anthocyanin in the blueberry concentrated juice, but also shorten the concentration time, control the production cost of the preparation process and effectively protect color, luster, fragrance and other sensory qualities of the blueberry juice.

The invention relates to a method for rapidly preparing a high-aluminum aerogel composite material based on aluminum isopropoxide. The high-aluminum aerogel is obtained on the basis of an aluminum isopropoxide rapid hydrolysis process. The content of aluminum oxide in the aerogel is 71.8-87.2%, the heat conductivity coefficient is 0.018-0.021 W / (m.K) at the average temperature of 25 DEG C, the heat conductivity coefficient is less than or equal to 0.055 W / (m.K) at the hot surface temperature of 1000 DEG C, the long-term use temperature is 1000-1200 DEG C, and the preparation period is 6-13 hours. The material can be widely applied to thermal protection in national defense industrial fields such as high-sound-velocity aircrafts and thermal batteries and thermal insulation and energy conservation in high-temperature industrial fields such as metallurgy and ceramics.

The invention provides a preparation method of androstane-17beta-N-(2,5-bis (trifluoromethyl)) benzamide. The preparation method comprises the following steps: (1) in the presence of an acid-binding agent, carrying out acyl chloride forming reaction between androstane-17beta carboxylic acid and thionyl chloride to obtain androstane-17beta acyl chloride; (2) enabling the androstane-17beta acyl chloride and 2,5-bis(trifluoromethyl) aniline to generate amide forming reaction in the presence of a hydrogen stripping agent to obtain androstane-17beta-N-(2,5-bis (trifluoromethyl)) benzamide, wherein the acid-binding agent is anhydrous potassium carbonate fine powder. The preparation method disclosed by the invention can be used for simply preparing the androstane-17beta-N-(2,5-bis (trifluoromethyl)) benzamide with low toxicity, high quality, high yield and low cost.

The invention discloses a production process of poly-crystal rocky candy. The production process comprises the following six steps: by taking first-grade white sugar as a raw material, dissolving the sugar, micro-filtering and clarifying, desalting and decolorizing by using ion exchange resin, concentrating in vacuum, charging seeds for crystallization, drying and packaging to produce the poly-crystal rocky candy. The poly-crystal rocky candy produced by the method disclosed by the invention is sweet and delicious in taste and white and transparent in color and luster; no sodium hydrosulfite is added for color protection during the overall production, so the product is environmental friendly and safe; the crystallization rate of the rocky candy is above 95%; the problem of low crystallization rate during production of the poly-crystal rocky candy for a long time is solved.