41results about How to "Ease of large-scale continuous production" patented technology

The invention provides a high impact high gloss bimodal polystyrene material and preparation method thereof, comprising the following steps: (a) the solution of polybutadiene rubber component mixed with polystyrene monomers is provided; wherein, the polybutadiene rubber component is selected from high cis-polybutadiene and/or low cis-polybutadiene, the cis-content of high cis-polybutadiene is not less than 94% by mole and the cis-content of low cis-polybutadiene is between 33% to 40% by mole ; (b) the solution obtained from the step (a) is used to perform prepolymerization reaction of styrene monomers to obtain a prepolymerization solution system which does not generate phase transition; (c) the prepolymerization solution system obtained from the step (b) is used to perform further prepolymerization reaction of styrene monomers in shearing force field until the system generates phase transition to obtain rubbery state material of which the particle size presents bimodal distribution; (d) the conversion rate of styrene monomers in the material obtained from the step (c) is further increased to obtain the high impact high gloss bimodal polystyrene material. The invention also provides a preparation method of the high impact high gloss bimodal polystyrene material.

The invention relates to a method for extracting rose flavone from a rose residue solution. The method comprises the following steps: (1), filtering the rose residue solution, concentrating, adding ethyl alcohol to adjust the pH value of the solution, refrigerating and standing in the absence of light; (2), performing suction filtration on the solution in the step (1), and concentrating, so as to obtain rose flavone pigment coarse powder; (3), performing separation and purification on the rose flavone pigment coarse powder obtained in the step (2), so as to obtain eluant; (4), concentrating and drying the eluant, so as to obtain dry flavone. According to the invention, the flavone extraction ratio reaches above 8% to the maximum extent, and is greatly improved compared with the flavone extraction ratio being not higher than 5% in the prior art; the obtained flavone is bright red in color, and can be widely applied to the fields of medicine and food.

The invention discloses a sucralose microcapsule and a preparation method thereof; the microcapsule comprises a capsule core and a capsule wall material, which is characterized in that the capsule core of the microcapsules uses sucralose as the main drug with the content being 2%-3%; a thinner is formed by combining any two of mannitol, sorbitol, erythritol, maltitol, xylitol, glucose, dextrine, aspartame, acesulfame potassium and fructose with the contents being respectively 40%-50%; and the dosage of a binder is 0.2%-0.6%; the capsule wall material mainly uses ethyl cellulose and polyethene, the dosage of ethyl cellulose is 2%-10%, and the dosage of polyethene is 0.4-5%.The sucralose microcapsules of the invention can prevent sucralose grain raw material from deliquescing, oxidizing and deteriorating, thus preventing the sweet taste from losing, and the sucralose microcapsules can be released at a slow and constant speed, thus ensuring the evenness of the sweet taste of the granule beverage; the preparation method of the microcapsule is simple with low cost, which is suitable for large scale continuous production, and the finished product has high encapsulation rate and high yield.

A separation method for epichlorohydrin comprises: mixing a solution containing epichlorohydrin, methanol, 3-chloropropene and water and an extraction agent, separating to obtain a liquid phase rich in epichlorohydrin and a liquid phase rich in methanol, distilling the obtained the liquid phase rich in epichlorohydrin to obtain epichlorohydrin, wherein the extraction agent comprises water and an organic solvent immiscible with water, and the density difference between the organic solvent and water is at least 10 Kg/m<3>, the organic solvent is lower in methanol extraction capability and higher in epichlorohydrin extraction capability than water, and the organic solvent has a boiling point different with that of epichlorohydrin. The method has short separation time (less than 3 min) during extraction, so that the requirement on extractive separation equipment and the difficulty in extraction operation are reduced; also during distillation, only part of the extraction agent needs evaporative recovery, so that energy consumption is effectively reduced; and therefore, the method is quite suitable for large-scale continuous production.

The invention relates to the technical field of new energy batteries, in particular to a method for continuously preparing an ordered membrane electrode catalyst layer on a large scale. The catalyst layer is prepared by modifying polytetrafluoroethylene fibers with nano-catalysts, then carrying out mixing melting extrusion on the modified polytetrafluoroethylene fibers, perfluorinated sulfonic acid resin and carbon fibers, carrying out calendering to prepare a catalyst membrane blank, and finally carrying out heating and longitudinal stretching. According to the membrane electrode catalyst layer prepared with the method provided by the invention, the toughness and the strength are excellent, the carbon fibers and the catalysts are orderly arranged in a fiber shape; channels are provided for electron and proton transmission; micro-channels beneficial to gas and water transmission are reserved after being attached to a proton exchange membrane, so that the catalytic activity and the durability are improved; and moreover, the preparation method is simple and easy to control, and is easy for large-scale continuous production.

The invention discloses a medium-anti-impact polystyrene resin production system, which comprises a system collosol tank, a mixed feeding tank, a two-stage prepolymerization reactor, a multistage polymerization reactor, a two-stage devolatilization device and a pelleting machine in sequential and series connection, wherein a superfine powder material preparation tank and a superfine powder feedingtank are connected in series and are then connected with an inlet of a first-stage polymerization reactor of the multistage polymerization reactor; a prepolymerization preheater is arranged on a pipeline between the mixed feeding tank and the first-stage polymerization reactor; a devolatilization preheater is arranged on a pipeline between the last-stage polymerization reactor of the multistage polymerization reactor and a first-stage devolatilization device; the upper parts of the end parts of the first-stage and second-stage devolatilization devices are connected in series and are then connected with a cycle condenser through a conveying pipeline; a connecting tank is connected with the bottom of the cycle condenser; a bottom outlet of the collecting tank is connected with an inlet of the prepolymerization preheater. A multistage prepolymerization-multistage polymerization-multistage devolatilization combination system is used; the requirements of users on medium-anti-impact products can be met; the large-scale production is easy.

The invention discloses a combustible solid waste pyrolysis device and a pyrolysis method. The pyrolysis device comprises a fluidized bed pyrolysis reactor and a fluidized bed combustion reactor whichadopt heat carrier bed material interactive circulation. Combustible solid waste fuel is pyrolyzed in the fluidized bed pyrolysis reactor, and a heat carrier bed material overflows and is sent to thecombustion reactor through a star-shaped return feeder; the heat carrier bed material is heated again by utilizing heat released by pyrolysis oil gas combustion in the combustion reactor; and the heated heat carrier bed material enters the pyrolysis reactor again through a fluidized bed return feeder. Heat generated by combustion is transmitted to a pyrolysis process by utilizing interactive circulation of the heat carrier bed material between the two reactors, so that the problem of non-uniform temperature in reactors caused by heat transfer of conventional reactors is solved; the star-shaped return feeder for pyrolysis material returning achieves a good sealing effect, the fluidized bed material return feeder for combustion material returning avoids high oxidation and deformation of mechanical moving parts, and meanwhile the solid circulation flux can be controlled.

The invention discloses a ruminant trans-fatty acid preparation method, which comprises: (1) carrying out a saponification reaction on butter and a sodium hydroxide ethanol solution under a 85-90 DEG C water bath condition, adding a sulfuric acid solution, stirring under a 45-50 DEG C water bath condition for 20-30 min, dissolving, standing, and taking the upper layer oily matter to obtain butter free fatty acid; (2) adding urea into absolute ethyl alcohol according to a certain proportion, carrying out rotary reflux at 70-85 DEG C, then adding a certain amount of butter free fatty acid, carrying out reflux at 77 DEG C, and carrying out inclusion at-5 DEG C; performing vacuum suction filtration to obtain filtrate, performing rotary evaporation on the filtrate at 65 DEG C, removing ethanol, dissolving with deionized water at 60 DEG C, extracting upper oily matter, drying with anhydrous sodium sulfate, and filtering to obtain the ruminant trans-fatty acid product. The preparation method of the ruminant trans-fatty acid is simple in process, high in operability, low in production cost and energy consumption and easy to realize large-scale continuous production.

The invention relates to N-(methyl sulphonyl)-p-methylphenyl sulphonylamine shown in the formula (I) and a preparation method thereof. The preparation method includes the steps that p-toluenesulfonyl chloride, methyl sulfonamide and a phase transfer catalyst are dissolved in an organic solvent, the mixture is heated to 60 DEG C-120 DEG C, an acid-binding agent is added, the organic solvent is distilled out after complete reaction, a generated solid is dissolved in water, the pH value is adjusted to be smaller than 1 through hydrochloric acid, the temperature is decreased to 20 DEG C-24 DEG C, crystals are separated out, filtration and drying are performed, and then the N-(methyl sulphonyl)-p-methylphenyl sulphonylamine is obtained. According to the method, the raw materials are easy to obtain, operation is easy and convenient, productivity is high, and large-scale continuous production is easy; the N-(methyl sulphonyl)-p-methylphenyl sulphonylamine has a good catalytic effect on polyester-system products of TMMGU, is a brand-new high-gloss powder coating curing agent or catalyst and can used for preparing environment-friendly high-gloss high-performance paint films.

The invention discloses a preparation method of konjac fermented soybean milk powder. The preparation method comprises the following steps: firstly, preparing enzymolysis konjac liquid and soybean milk separately, then adding the enzymolysis konjac liquid into the soybean milk, adding soybean protein isolate, then performing mixed fermentation through various lactic acid bacteria, and finally performing low-temperature spray drying, thereby obtaining the konjac fermented soybean milk powder. By adding the soy isolate protein and the konjac enzymatic hydrolysate and then fermenting with the mixed lactic acid bacteria, the soy milk can have a good health-care effect, and the product is high in protein content, rich in nutrition, unique in flavor and good in palatability; and low-temperaturespray drying is adopted, the viable count of lactic acid bacteria in fermented soybean milk powder can be preserved to the maximum extent, and the prepared powdery product has the advantages of beinghigh in lactic acid bacteria activity, small in storage space, convenient to eat and the like.