224results about How to "Production process safety" patented technology

This invention discloses a method for preparing bentonite inorganic gel. The method comprises: mixing bentonite filter cake, sodium salt powder and urea powder to obtain a mixture, drying, pulverizing, and uniformly mixing with gelating agent to obtain bentonite inorganic gel. The sodium salt powder is one or more of sodium carbonate, sodium fluoride and sodium silicate. The addition amounts of sodium salt powder and urea powder are 2-10 wt. % and 0-20 wt. % of bentonite filter cake, respectively. The gelating agent is one or more of glues and cellulose substances, and the addition amount is 1-30 wt. % of the mixture. The method has such advantages as simple process, high efficiency, and high product performance, no toxicity and no harm, and is suitable for mass production.

The invention belongs to the technical field of functional food processing, and discloses a soluble soybean polysaccharide-soybean protein-curcumin compound as well as preparation and application. The preparation method comprises the steps of: separately dispersing and dissolving soybean proteins and soybean polysaccharide in deionized water so as to obtain soybean protein dispersed liquid and soybean polysaccharide dispersed liquid; dispersing curcumin in absolute alcohol to sufficiently dissolve the curcumin so as to obtain a curcumin ethanol solution; then adding the curcumin ethanol solution into the soybean protein dispersed liquid so as to obtain soybean protein-curcumin mixed liquid; then adding the soybean polysaccharide dispersed liquid into the soybean protein-curcumin mixed liquid so as to obtain mixed liquid; regulating the pH of the mixed liquid to be 7.0 or 4.0; and freeze drying the mixed liquid so as to obtain the soluble soybean polysaccharide-soybean protein-curcumin compound. According to the soluble soybean polysaccharide-soybean protein-curcumin compound disclosed by the invention, the soybean polysaccharide and the soybean proteins are successively compounded with the curcumin, so that the stability and the slow release effects of the curcumin in an aqueous solution are obviously improved, and the soluble soybean polysaccharide-soybean protein-curcumin compound has favorable application prospects in the development of functional foods and medicines.

The invention discloses a stable peroxyacetic acid disinfectant which relates to a disinfectant. The peroxyacetic acid disinfectant comprises the following raw materials in percentage by mass: 27-39 percent of hydrogen peroxide, 22-36 percent of acetic acid, 0.01-2 percent of compound stabilizer, 0.01-2 percent of surfactant and the balance of water. In the prepared peroxyacetic acid disinfectant, the concentration of the peroxyacetic acid is 15-20 g/100g, the concentration of the hydrogen peroxide is 20-30 g/100g, and the concentration of the acetic acid is 10-20 g/100g. The peroxyacetic acid disinfectant has the characteristics of high peroxyacetic acid concentration, high stability, good disinfection and sterilization effects, simple production process, safety and the like.

The invention provides a solid acid catalyst for 5-hydroxymethyl furfural synthesis and a preparation method thereof and relates to a solid acid catalyst. The invention aims to provide the preparation method of the solid acid catalyst for 5-hydroxymethyl furfural synthesis, which has the advantage that a raw material is cheap, easy to obtain, simple in preparation process, and environmentally-friendly, and can be used for synthesizing 5-HMF (Hydroxymethyl Furfural) through carbohydrate dehydration. The solid acid catalyst for 5-hydroxymethyl furfural synthesis is an oxide load sulfate ion or an oxide load chromium ion. The method comprises the following steps: dissolving oxide into deionized water; then completely precipitating the oxide by using a precipitant, aging, washing, filtering and drying; and finally, soaking the precipitant in sulfuric acid solution or chromium solution, dipping, filtering, drying and roasting to obtain the solid acid catalyst for 5-hydroxymethyl furfural synthesis. The 5-hydroxymethyl furfural does not corrode equipment, is easy to separate and can be recycled. The yield of the 5-hydroxymethyl furfural is high. The solid acid catalyst and the preparation method also have the advantages of environmental friendliness, low cost, simple preparation process, easiness in operation, and safe and reliable manufacturing process.

The invention relates to a Mo-La-Ce rare-earth molybdenum alloy wire and its process for preparing. The invention is characterized in that the said molybdenum alloy wire contains 0.4 %-1.0% lanthanum oxide and cerium oxide(mass %) and the proportion by weight of lanthanum oxide and cerium oxide is 4:1. The process for preparing is different from the traditional powder metallurgy productive technology, which includes performing vacuum drying and liquid-solid doping for molybdenum dioxide, lanthanum nitrate and cerium nitrate solution, then performing secondary reduction to prepare binary rare-earth doping molybdenum powder, finally preparing rare-earth doping molybdenum wire with Mo-La-Ce of 0.5-0.8mm diameter by impression, agglomeration and pressure processing procedure. The raw materials of this invention is cheap and facile, and the prepared molybdenum wire is of high tensile strength, strong abrasive resistance and simple process and is inflexible, and has high rate of finished products, good compatibility and long durability.

The invention discloses preparation and application of a short-chain fluorine-containing copolymer water-repellent oil-repellent finishing agent. A preparation method of the finishing agent comprisesthe following steps: taking short-carbon-chain perfluoroalkyl group acrylate, non-fluorine-containing acrylate monomer, and cross-linking monomer, emulsifying the monomers under the effect of a cationand nonionic compound emulsifier, further finely emulsifying by virtue of a homogenizing machine or in an ultrasonic environment, finally dropwise adding a water-soluble initiator, initiating the polymerization, and preparing a short-chain fluorine-containing copolymer fine emulsion. By adopting the fine emulsion polymerization method in the preparation process, no organic solvent is needed, andthe stability of the copolymer emulsion is ensured; and in addition, by utilizing a short-chain fluorine-containing chain segment with a carbon chain number smaller than 6, while the excellent water-repellent and oil-repellent performance is ensured, the environmental protection requirement can be met.

The present invention is high temperature molybdenum alloy wire and its alloy consists of K 0.05- 1.0 wt%, Si 0.1-0.5 wt% and Al 0-0.05 weight %, except Mo, O and inevitable impurities. The alloy is prepared through double cone vacuum dry liquid-solid doping in the MoO2 stage, secondary reduction to preparing K, Si and Al doped Mo powder, pressing, sintering and other steps, and is further produced into molybdenum alloy wire of 0.5-0.8 mm diameter through press work and other steps. The molybdenum alloy wire has high tensile strength, high wear resistance, simple production process and other advantages.

The invention relates to composite zirconium oxide microspheres and a preparation method thereof. The microspheres are prepared from yttrium oxide as a stabilizer of a zirconium oxide material. The microspheres comprises a doped system of third components including one or more of alumina, cerium oxide, copper oxide, magnesia, calcium oxide and silica, wherein the content of the yttrium oxide in the zirconium oxide is 0.1-8mol% while the total doping amount of the alumina, the cerium oxide, the copper oxide, the magnesia, the calcium oxide and the silica is 0-30wt%. According to the method, sediment dry gel is molded and further sintered to finish preparation of the composite zirconium oxide ceramic microspheres. The preparation method is simple in production technology, relatively low in cost, and applicable to industrialization. A lot of energy sources are saved for industrialization of the zirconium oxide ceramic microspheres. Meanwhile, the prepared ceramic microspheres disclosed by the invention have the characteristics of large density, durability, stability and the like.

The invention relates to the field of a lithium ion battery and discloses a lithium ion battery and a positive electrode plate thereof and a preparation method thereof. The positive electrode plate comprises a current collector; a positive electrode active material layer and a lithium-supplementing material layer are coated on the current collector; a mixture of a positive electrode active material, a conductive agent and a binder is coated on the positive electrode active material layer; and a mixture of LiF, a transition metal, the conductive agent and the binder is coated on the lithium-supplementing material layer. By use of the technical scheme, the reversible gram capacity of the lithium ion battery is improved on the basis of guaranteeing the safety of production and use of the lithium ion battery.

The invention relates to a new process for producing anhydrous ethanol by rectification pervaporation, which is characterized in that it comprises the following steps: (1) entering the mixed ethanol solution containing 20%-80% water into a rectification tower for rectification to yield 95% Ethanol; (2) 95% ethanol is heated to 88°C-91°C to enter the pervaporation membrane module for separation, and the flow rate of 95% ethanol entering the pervaporation membrane module is 100-400L/h. The production process is simple and safe, does not add any third component, has low energy consumption, is green and environmentally friendly, occupies a small area, and greatly reduces the production cost of anhydrous ethanol.

The invention relates to a scandium oxide-stabilizing zirconia powder and a preparation method thereof. The scandium oxide-stabilizing zirconia powder comprises zirconium oxychloride as precursor mother salt, one or more third elements of aluminum oxide, cerium oxide and bismuth oxide and a doping system, wherein the doping quantity of the scandium oxide is 8 mol%, and the total doping quantity of the aluminum oxide, the cerium oxide and the bismuth oxide is 0-7 wt%. The preparation method comprises the steps of water washing, filtration, drying, calcinations and powder surface dry and wet modification as well as constant-pressure hydrolysis reaction and low-pressure hydro-thermal reaction, wherein the constant-pressure hydrolysis reaction and low-pressure hydro-thermal reaction are carried out by the steps of: firstly carrying out constant-pressure hydrolysis on a water solution of the precursor mother salt ZrOCl2 (ScCl3) in a reactor, and then carrying out hydro-thermal treatment on hydrolysis liquid at the temperature less than 150 DEG C and the pressure of 0.3-0.5 MPa. The scandium oxide-stabilizing zirconia powder has the characteristics of small grain size, centralized size distribution, high sintering activity, lower specific surface area, suitability for the traditional casting process of a SOFC (Solid Oxide Fuel Cell) and high conductivity and strength index, and the preparation method has the advantages of simple and safe production process, lower cost, low requirement for equipment and easy realization of industrial big production.

The invention relates to the field of lithium ion batteries and discloses a lithium ion battery, a positive electrode sheet thereof and a preparation method thereof. The positive electrode sheet includes: a current collector coated with a positive electrode active material layer and a lithium-replenishing material layer, wherein the positive electrode active material layer is coated with a mixtureof a positive electrode active material, a conductive agent, and a binder; the lithium-replenishing material layer is coated with a mixture of Li2S, transition metal, a conductive agent, and a binder. The application of the technical solution improves the reversible gram capacity of the lithium ion battery on the basis of ensuring the safety of the production and use of the lithium ion battery.

The invention discloses a method for preparing safe environment-friendly phenolic foam. The foam is prepared by a reaction after mixing the following ingredients: 100 weight portions of expandable phenolic resin, 8-15 weight portions of curing agent, 4-8 weight portions of surfactant and 20-50 weight portions of packing. The preparation method comprises the following steps: putting the ingredients in a reaction container in proportion, stirring with high speed, after mixing uniformly, transferring the ingredients to a preheated mould, foaming at the temperature of 60-80 DEG C and under the pressure of 15-40kg/cm<2>, cooling and demoulding. According to the method, because inflammable CFCs, low-carbon alkane and other lower-boiling organic compounds are not used as foaming agent, the production cost is reduced. The prepared phenolic foam has uniform quality, small aperture, low coefficient of thermal conductivity, and good thermal insulation performance, can be widely used in exterior wall, roofing, air-conditioning bellow and other thermal insulation materials, and improves thermal insulation performance and fireproof performance greatly.

The invention discloses a prefabricated light transmitting concrete plate production mold and a manufacturing method thereof, and belongs to the technical field of concrete. The prefabricated light transmitting concrete plate production mold comprises a front pedal, a left side template, a right side template, a cross pull support, pull support fixed bolts, a back side U-shaped steel template, a front side U-shaped steel template, optical fiber holes, optical fibers, left side straight pull supports, combined bolts, straight pull support fixed bolts and right side straight pull supports; the front pedal includes a transverse inclined support, a bearing plate, an inclined rod and a vertical rod; the left side straight pull supports are fixed at the middle parts of the left sides of the front side U-shaped steel template and the back side U-shaped steel template through the straight pull support fixed bolts; multiple optical fibers are provided; each optical fiber penetrates through the optical fiber hole in the right side template and the optical fiber hole in the left side template in sequence; and the two ends of the optical fibers are respectively tensioned and fixed on hook rings in the left side straight pull supports and hook rings in the right side straight pull supports. The prefabricated light transmitting concrete plate production mold can realize industrial production of light transmitting concrete plates; and the manufacturing method is safe and reliable, and can obtain the prefabricated concrete plates with high light transmittance.

The invention relates to florfenicol water-soluble powder and a preparation method thereof. The water-soluble powder is prepared from the following raw materials in parts by weight: 5-20 parts of florfenicol, 25-95 parts of water-soluble cyclodextrin polymer (CDP) and 5-19 parts of hydroxypropyl beta-cyclodextrin. The powder can be completely dissolved into water, the room-temperature solubility can reach 33.5% and the water solution is completely clear. The room-temperature solubility can reach 33.5% (335,000ppm), and the effective content of the florfenicol can reach 15% (150,000ppm), and is about 3300 times of state-recommended clinical dosage and much higher than that of an existing florfenicol composition.

The invention discloses a method for continuously preparing boron-doped SiO2 aerogel, belonging to the preparation field of novel porous materials. According to the method, by setting a preparation system with the functions of raw material feeding, sol preparation, gel preparation, solvent replacement, gel drying and waste material recycling, a large number of boron-doped SiO2 aerogel can be continuously produced. The method has the advantages that the occupied area of equipment is small, the preparation process is continuous and controllable, the production energy consumption is reduced, theequipment cost is lowered, and the labor cost is lowered. The prepared boron-doped SiO2 aerogel has good mechanical property, light transmittance performance and high-temperature stability.

The invention provides a preparation method for graphene and antimony sulphide nano-rod composite visible light catalyst. The preparation method comprises the following steps: firstly adding oxidized graphene into ethylene glycol or 1,2-propanediol, performing ultrasonic dispersion, then adding SbCl3, heating, stirring to enable the mixture to be dissolved, adding sulfur powder, continuously stirring to enable the mixture to be uniform, adding sodium borohydride, stirring, performing reflux for a period of time, naturally cooling to the room temperature, and performing centrifugal separation to obtain a black precipitate; washing and drying the black precipitate to obtain the graphene and antimony sulphide nano-rod composite visible light catalyst. The photocatalyst prepared by the method is excellent in composite effect and high in visible light catalytic activity, has the advantages of being simple in production technology, safe in production process, easily-controllable in reaction parameter, low in implementation cost and easy to realize industrial production, and can be widely used for preparation of graphene-based composite one-dimensional nanometer materials.