32results about How to "Facilitate large-scale continuous production" patented technology

The invention relates to a preparation method for 9, 10-dihydroxy stearic acid and methyl ester, which is characterized in that the oleic acid and the formic acid are mixed uniformly in room temperature; the mixture is added with hydrogen peroxide, and warmed up and separated from water phase; the solvent is recycled through decompression and distillation; the generative reaction admixture is recrystallized with organic solvent, so that the product 9, 10-dihydroxy stearic acid is prepared. The recovered formic acid solution can generate ice-cream calcium formate salt separation by adding calcium oxide and calcium carbonate; subsequently the methyl alcohol and oil of vitriol is arranged into the product 9, 10-dihydroxy stearic acid for a reflux reaction, and then is rotated and vaporized out the water phase and oil phase for being washed to be neutral, thereby the 9, 10-dihydroxy stearic acid methyl ester product is generated through dehydration. The invention has the advantages of clean process, safe implementation, easy operation, full utilization of the reactant, reduced waste emission, effective utilization of the low-concentration hydrogen peroxide, and favorableness to large-scale production.

The invention relates to a mixed biomass briquette fuel and a forming method thereof. The mixed biomass briquette fuel is prepared by mixing a mixture of an oil plant fruit squeezed cake or an oil plant fruit squeezed cake and an oil plant fruit oil-cracked solid-phase product with cellulose type biomass scrap, pressing and forming. The forming method comprises the following steps: (1) pretreatment of raw materials; and (2) mixing and forming to obtain the mixed biomass briquette fuel. The mixed biomass briquette fuel provided by the invention has high burning rate, and can solve the disposal problem of oil plant fruit processing wastes and waste materials; the forming method has the advantages of low energy consumption in forming process, small equipment loss, and is convenient for large-scale continuous production and convenient for transportation and preservation; the strength is high, and the transportation and the use are convenient; the forming method of the mixed biomass briquette fuel, provided by the invention, can realize deep utilization of industrial oil wastes, and utilize the oil wastes to optimize a production process of biomass fuel and has the advantages of low pollution, low investment and small equipment loss and is simple to operate, and large-scale production is easy to carry out.

The invention discloses a preparation method and application of a three-dimensional (3D) hierarchical porous nitrogen-doped carbon clad silicon composite material. The method comprises the following steps of mixing an organic metal framework with nano silicon and polyacrylonitrile by utilizing a high-pressure sputtering method, roasting and carbonizing at high temperature in a protective atmosphere, then removing a metal oxide in the organic metal framework by using hydrochloric acid, washing, and drying, so that the 3D hierarchical porous nitrogen-doped carbon clad silicon composite material(3D NPC@Si) is prepared. The method is used for providing great feasibility for the synthesis of a material for a negative electrode of a lithium-ion battery, which is controllable in component, controllable in structure, high in specific surface area and favorable in structural stability. The method is simple, easy and feasible and is low in cost; the prepared composite material has a higher specific surface area, favorable electron conductivity and better structural stability, and the composite material shows extremely good electromechanical performance in the material for the negative electrode of the lithium-ion battery and has a quite good industrial application prospect.

The invention discloses a separating purifying method of nonadioic acid, which comprises the following steps: oxidizing oleic acid through ozone; cracking; evaporating solvent; recycling; extracting substrate through hot water; crystallizing water phase after extracting; drying to obtain rough product of nonadioic acid; adding rough product of nonadioic acid into organic solvent; stirring; sucking; drying; obtaining the pure product of nonadioic acid. The invention removes monacid and insoluble impurity with purity of nonadioic acid over 98%, which provides clean manufacturing method.

The invention discloses a high-temperature metallization technology for yttria ceramic. The active molybdenum-manganese process high-temperature metallization technology is adopted to carry out high-temperature metallization on yttria ceramic and includes the following specific steps of preparation of molybdenum-manganese paste, preparation of a metallization coating, firing of a molybdenum-manganese metallization layer, and electronickelling. In this way, according to the high-temperature metallization technology for yttria ceramic, the active molybdenum-manganese process is adopted to carry out high-temperature metallization on yttria ceramic, the production equipment requirement is lower than that of vacuum magnetron sputtering, and the equipment price is low; meanwhile, as silk screen printing coating and a continuous atmosphere protection tunnel kiln are adopted to carry out metallization, automatic production can be adopted, and large-scale continuous production can be conveniently achieved; due to the technological characteristics of the active molybdenum-manganese process, the bonding strength of a molybdenum layer formed after firing and ceramic is high.

The invention belongs to the field of high polymer materials, and discloses a preparation method of a modified composite heat-resistant lithium ion battery diaphragm, which comprises the following steps: A, modifying aramid fibers; B, modifying an inorganic nano material; C, mixing the modified aramid fiber slurry and the modified inorganic nano slurry with a solvent in proportion to prepare organic-inorganic mixed modified slurry; and D, coating a base membrane with the organic-inorganic mixed modified slurry, and carrying out moisture solidification, washing, solvent removal and drying to obtain the modified composite heat-resistant lithium ion battery diaphragm. The problems of insufficient heat resistance, high moisture, large static electricity and the like of an existing aramid fibercoating diaphragm are solved.

The invention discloses a method for preparing a low-pour-point lubricant additive from low-priced cotton seed oil. The method comprises the following steps: mixing cotton seed oil, methanol and potassium hydroxide so as to prepare fatty acid methyl esters, uniformly mixing the fatty acid methyl esters, formic acid and petroleum ethers at room temperature, stirring and heating the obtained mixture, dripping a mixture of hydrogen peroxide and phosphoric acid into the obtained mixture, standing the obtained product to carry out delamination, separating a water layer, washing an oil layer by using water until the oil layer is neutral, and carrying out reduced pressure distillation to obtain colorless transparent oily epoxidized fatty acid methyl esters, wherein the epoxy value is greater than 4-7, the iodine value is less than 2-0, the acid value is less than 1, and the yield is 90-94%; adding calcium carbonate into a residual formic acid solution after reaction so as to obtain calcium formate which can be recycled; and carrying out esterification reaction on the epoxidized fatty acid methyl esters so as to obtain epoxidized fatty acid methyl ester mixed fatty acid esters. According to the method disclosed by the invention, atalyst application amount is low, the process is clean, the implementation conditions are simple, and the mass production can be implemented conveniently.

The invention discloses a refining process of a polyoxymethylene dimethyl ether condensation product. The process includes: carrying out hydrolysis reaction on water, formaldehyde and formic acid in acondensation equilibrium product under the action of a catalyst, enabling the produced active hydrogen to reduce unhydrolyzed formaldehyde and methyl formate into methanol under the action of the catalyst, thus reaching the multi-effect refining purpose of aldehyde removal, deacidification, degreasing and dehydration of a condensation equilibrium product, and sending the refined product to a subsequent separation unit. According to the invention, the chemical characteristics of a small amount of water, formaldehyde, formic acid and methyl formate in the condensation equilibrium product are skillfully utilized, a hydrolysis reduction reaction network is formed under the action of a catalyst, formaldehyde, formic acid, methyl formate and water in the condensation equilibrium product react with one another to generate methanol which is easy to separate, and the catalytic refining process achieves multi-effect refining of aldehyde removal, deacidification and dehydration on a polyoxymethylene dimethyl ether condensation product.

The invention relates to the field of floorboard production and particularly relates to an abrasive wheel type polishing system for floorboards. The abrasive wheel type polishing system comprises a rack, abrasive wheels arranged on the upper portion of the rack, cooling mechanisms and dust removing mechanisms, wherein the cooling mechanisms and the dust removing mechanisms are arranged above the abrasive wheels. According to the polishing systems, the surfaces of the abrasive wheels are electroplated with diamond, and discharging nicks are arranged in cooperation so that the abrasive wheels can be used for a long term, the operation of replacing abrasive paper repeatedly can be omitted, and manpower can be saved; meanwhile, the cooling mechanisms and the dust removing mechanisms are arranged in cooperation, so that long-time mass continuous production is facilitated, and production efficiency is ensured.

The invention discloses a preparation method of L-pyroglutamic acid. The method comprises the following steps: (1) adding glutamic acid or hydrolyzed recovery material into a reaction kettle and then heating, controlling the temperature to be 145-150 DEG C, carrying out intermittent mixing, and enabling the mixture to be completely dissolved so as to obtain feed liquid; adding purified water into the feed liquid, crystallizing for a plurality of times and centrifuging, merging crystallized products to obtain solid A, and merging mother liquor to obtain liquid 1; (2) heating the solid A up to 35-45 DEG C in a solvent, enabling the solid A to be completely dissolved and then sending the dissolved product to a bleaching tank, heating up to 65-75 DEG C, then adding activated carbon, absorbing under the condition of heat preservation, and filtering to obtain a decolored solution; carrying out cooling crystallization on the decolored solution and then centrifuging to obtain a wet product; recycling crystallization mother liquor for a plurality of times, concentrating and recrystallizing to obtain solid B and liquid 2; (3) carrying out vacuum drying on the wet product at the temperature of 80-85 DEG C; after drying is finished, cooling, and detecting to obtain the L-pyroglutamic acid. The method is simple in production technology, mild in reaction conditions, high in product yield and purity, free from emission of pollutants and wastes, and convenient for large-scale continuous production.

The invention relates to a method for modifying a lubricating oil additive by using thioacetic acid. The mixed fatty acid ester of epoxy polyisobutylene is functionally modified to obtain the extreme pressure anti-wear and anti-oxidative lubricating oil additive by using the thioacetic acid, wherein the pour point is lowered from -2 to -5 DEG C before modification to -10 to -20 DEG C after modification. A process is clean, the method is safe in implementation and convenient to operate, and large-scale production is facilitated.

The present invention relates to technology of producing ferrous sulfate monohydrate in a push plate kiln. Depurated green vitriol as the material carried on the push plate is made to pass slowly through the roasting cavity inside the push plate kiln so as to be preheated, high temperature roasted and cooled successively to produce ferrous sulfate monohydrate. The present invention has the advantages of simple operation, reliable running, stable product quality, low power consumption, no environmental pollution, easy control and suitability for continuous industrial production.

The invention discloses a preparation method of a carbon-loaded nickel catalyst. The preparation method comprises the following steps: 1) depositing a certain amount of metal salt on the surface of a carbon carrier or a precursor; and 2) roasting the carbon carrier or the precursor deposited with the metal salt in step 1) in an inert protective atmosphere for a certain time to obtain the carbon-loaded nickel catalyst. The method is simple and easy to implement and low in cost, shows excellent catalytic performance in a reaction for preparing hydrogen peroxide through electrochemical oxygen reduction, and has a very good industrial application prospect.

The invention discloses an oxygen reduction electrocatalyst material and a preparation method thereof. The catalytic active component of the catalyst is one or more of ZrN, a ZrN composite material and a ZrN doped material; anhydrous zirconium chloride is used as a metal source, and dissolved in an absolute ethyl alcohol solution; then, a certain amount of urea is added, and after uniformly mixing, a colloidal precursor is obtained; and the obtained precursor is placed in a protective atmosphere for high-temperature roasting and nitriding, and a pure-phase zirconium nitride nanoparticle catalyst is obtained. The applicant finds that zirconium nitride, especially a cubic phase zirconium nitride material, has excellent oxygen reduction electrocatalytic performance, can replace precious metalPt in a fuel cell to serve as a cathode catalyst, and has the characteristics of low cost, high activity and high stability.

The invention discloses a refining method of L-glutamic acid. The method comprises the following steps of (1) adding a solvent to a bleaching tank, heating, adding aginomoto, stirring evenly, adding activated carbon when the temperature is raised to 70-80 DEG C, carrying out insulated adsorption and filtering to obtain a decolored solution; (2) carrying out precise filtration on the decolored solution obtained in the step (1), feeding the decolored solution into a neutralization tank, keeping the temperature at 70-80 DEG C, adjusting the pH to acidity, carrying out cooling crystallization and then centrifuging to obtain a wet product and a mother liquid; and (3) carrying out vacuum drying on the wet product obtained in the step (2), wherein the vacuum drying temperature is smaller than 80 DEG C; and then carrying out cooling and detecting to obtain the L-glutamic acid. The refining method is simple in production technology and low in equipment requirement, free of high-temperature and high-pressure requirements, mild in reaction condition, high in product yield and purity, low in emission of the mother liquid, the highest temperature in the production process is 70-80 DEG C, and large-scale continuous production is convenient to implement.

The invention provides an oil-in-water adjuvant used for animal vaccines and a preparation method for the oil-in-water adjuvant, and belongs to the technical field of biological product-like animal vaccines. The oil-in-water adjuvant used for the animal vaccines comprises the following raw materials by weight percent: 80.7%-89.5% of mineral oil, 2.1%-2.5% of span 80, 3.0%-5.3% of tween 85, 1.5%-3.5% of lauroyl macrogolglycerides, 0.5%-4.7% of polyglyceryl-6 caprylate and 2.2%-3.6% of polyoxyethylated castor oil. The oil-in-water adjuvant is simple and convenient to prepare, easy to obtain andlow in cost; prepared vaccines are low in viscosity, easy and safe to inject, stable in quality and small in grain size, can reach a nanoscale, and can induce temporary and permanent immunity; and theoil-in-water adjuvant is a safe adjuvant which can be used for poultry and livestock vaccines.