40results about How to "Suitable for industrial scale applications" patented technology

The invention relates to the field of a membrane technology and membrane surface modification and concretely relates to an anti-pollution modification method of a polypropylene hollow fiber membrane module. The method comprises the following steps of selecting a compound with strong hydrophily and multiple active groups as a modifier, adsorbing the modifier by the surface of the polypropylene hollow fiber membrane module in a dynamic cycle way, and under coordination complexation of the active groups in the modifier molecule and an inorganic bacteriostatic agent, fixing the modifier to the polypropylene hollow fiber membrane module so that the polypropylene hollow fiber membrane module with hydrophily and antibacterial properties is prepared. Through control of a flowing direction of a cross-linking agent solution, a modification compound solution and a metal ion soluble salt solution, the method realizes hydrophilic and antibacterial modification of an inner surface, an outer surface and membrane apertures of the polypropylene hollow fiber membrane module, greatly improves work efficiency and treatment effects, needs simple requirement and is suitable for industrial application.

The invention discloses a preparation method for a transparent dielectric microsphere flexible film used for strengthening raman scattering spectral intensity, and belongs to the field of spectrum detection. The preparation method comprises the following steps: preparing a transparent dielectric microsphere turbid liquid; dispensing the dielectric microsphere turbid liquid on an inclined glass sheet surface; after a solvent in the turbid liquid on the inclined glass sheet is evaporated, forming a microsphere single-layer densely paved array structure; preparing a polydimethylsiloxane (PDMS) solution; dispensing the uniformly mixed PDMS solution on the glass sheet deposited with the microsphere array, and thinning by equalizing glue; heating the glass sheet covered with the microsphere array and a PDMS liquid-state thin layer and cooling the glass sheet to the room temperature, embedding the microsphere array into a PDMS film and curing the PDMS film; and separating the microsphere filmfrom the glass sheet. The flexible film can be adhered to the surfaces of various samples, so that raman scattering strengthening on a semiconductor material, one-dimensional and two-dimensional nanomaterials and a three-dimensional structural surface material can be realized.

The invention relates to a method for preparing 5-(2-methylmercapto-ethyl)-hydantoin by utilizing crude hydrocyanic acid gas and relates to the field of chemical industry. The method disclosed by the invention comprises the following steps of: completely reacting hydrocyanic acid mixed gas made by adopting an Ann method with methylmercapto propionaldehyde to obtain a 2-hydroxyl-4-methylmercapto-butyronitrile reaction system under the catalytic action of organic alkali; and sufficiently reacting the 2-hydroxyl-4-methylmercapto-butyronitrile reaction system with ammonium bicarbonate in a water medium to obtain 5-(2-methylmercapto-ethyl)-hydantoin. Due to adoption of raw materials which are not rectified or purified, the method disclosed by the invention is short in production time, high in production efficiency and low in production cost; the prepared 2-hydroxyl-4-methylmercapto-butyronitrile reaction system is steady in property and can be stored for a long time; and 5-(2-methylmercapto-ethyl)-hydantoin with high purity and high yield can be obtained through simple separation and purification operations under the synergistic effect of other substances in reaction liquid.

The invention discloses an immersion cooling heat dissipation structure, a radiator, a heat dissipation system and a manufacturing method of the immersion cooling heat dissipation structure. The immersion cooling heat dissipation structure comprises a boiling heat exchange unit, and the boiling heat exchange unit comprises a first surface and a second surface which are arranged back to back; a microstructure composed of a plurality of opposite convex parts and/or a plurality of opposite concave parts is distributed on the first surface, and the first surface is at least used for making contactwith an electrically insulating immersion cooling medium; the second surface is a smooth face and used for being attached to a heating element, or the second surface and the heating element are integrally arranged. The immersion cooling heat dissipation structure provided by the invention has the advantages of higher heat exchange area, more nucleation sites, stronger capillary fluid infusion capability, excellent boiling heat exchange performance, high heat transfer coefficient and critical heat flux density, low superheat degree of a nucleation boiling starting point and great advantages ina small-space high-heat-flux heat dissipation application scene; meanwhile, the manufacturing process is relatively flexible and controllable, the cost is low, industrial large-scale application canbe achieved, and the market competitiveness is high.

The invention relates to the technique field of a preparation method of an intermediate compound of Ivabradine. The preparation method of 3-(3-chloropropyl)-7, 8-dimethoxy-1, 3-dihydro-2H-3-benazepine-2-ketone comprises: making 7, 8-dimethoxy-1, 3-dihydro-2H-3-benazepine-2-ketone and 1, 3-chlorobromide have the alkylation reaction. The preparation method unexpectedly selects an alkaline reagent used commonly, and has advantages of mild reaction conditions, safety and reliability, and rather high yield, and the method fully overcomes the defects of strong water absorption, easy deterioration, or easy explosion under rather low temperature of the alkylation reagent used in the prior art, and is extremely applied to the industrialized big-production.

The invention relates to a gradient MCrAlX coating single-target electric arc ion plating one-step preparation method, and belongs to the technical field of coatings, wherein the method can be used for preparing the adhesion layer and the like of anti-high temperature oxidation and hot corrosion coatings, and thermal barrier coatings, MCrAlX:M comprises, but is not limited to, Fe, Co, Ni, Ti, Pt, Zr, W, Nb, B or a combination thereof, X is a rare earth element and comprises, but is not limited to, Y, La, Hf, Ce, Gd, Dy or a combination thereof, and by using the two sputtering phenomenon and by real-timely adjusting the bias voltage during a film plating process, the gradient MCrAlX coating can be obtained from the single MCrAlX target in one step without other processes, wherein the aluminum and the chrome component present the gradient change from the coating surface to the internal. According to the present invention, the high ionization rate of the electric arc ion plating and the coating anti-sputtering under the high bias voltage are utilized, such that the gradient MCrAlX coating can be obtained from the single target, the prepared coating has the compact structure, the process stability and the preparation efficiency are high and are much better than other multiple process combined gradient coating preparation methods, the cost is low, and the method is suitable for industrial application.

The invention relates to a device for increasing a recovery rate of sulfur and a recovery method of sulfur. The device comprises a sulfur production process tail gas recovery device, a shift gas recovery device and a circulating system. With the adoption of the recovery device and method, the sulfur recovery rate can be close to 100%, and further, the device and the method have the advantages of simple process and low investment and operating cost, and are suitable for large-scale industrial application.

The invention relates to the technical field of membrane distillation, and provides a composite material for membrane distillation, the composite material is composed of a hydrophobic porous materiallayer and a hydrophilic porous material layer, and pores of the hydrophobic porous material layer and the hydrophilic porous material layer are in three-dimensional three-dimensional communication; and the pores of the hydrophobic porous material layer and the hydrophilic porous material layer at the interface are in three-dimensional three-dimensional communication, and the specific surface areaof the material is greatly increased, so that diffusion of water molecules and condensation of water are facilitated, more water molecules are enabled to pass through a composite membrane, a large membrane flux is realized, the membrane is not easy to block in use, and the composite material has a relatively long service life and is suitable for industrial application.

The invention aims at the chemical industry field, and relates to a preparation method of D,L-2-hydroxy-4-methylthiobutyrate. The method comprises the following steps: fully reacting a hydrocyanic acid gas mixture prepared through an Andrussow method with methylthiopropionaldehyde under the catalysis of an alkali to obtain a 2-hydroxy-4-methylthiobutyronityile reaction system; and mixing the 2-hydroxy-4-methylthiobutyronityile reaction system with alcohol, and carrying out hydrolysis and esterification reactions under the catalysis of an inorganic acid to prepare the D,L-2-hydroxy-4-methylthiobutyrate. Initial raw materials which are not rectified or purified, and are cheap and easily available, an intermediate obtained through a reaction has stable properties, few reaction steps are realized, and a finally obtained product is simply separated and purified to obtain high-purity and high-yield D,L-2-hydroxy-4-methylthiobutyrate.

The invention discloses an efficient boiling heat transfer copper material and a preparation method thereof. The surface of the efficient boiling heat transfer copper material is coated with a porouscopper film; the porous copper film comprises a plurality of copper nanocones; and irregular open micro-cavities distributed among the plurality of copper nanocones communicate with one another to form a porous micro-cavity structure. The preparation method comprises the following steps of: assembling a base material serving as a working electrode, a counter electrode and a weakly alkaline coppersalt electrolyte to form an electrochemical working system, applying a reduction current between the working electrode and the counter electrode, and forming a porous copper film on the surface of thebase material through an electrodeposition reaction. The efficient boiling heat transfer copper material disclosed by the invention has the advantages of higher heat exchange area, far more nucleation sites, more excellent boiling heat transfer performance, a higher boiling heat transfer coefficient, higher critical heat flux density, lower superheat degree of nucleate boiling onset, a simple andconvenient preparation process, easiness in reaction regulation and control and low cost; and the efficient boiling heat transfer copper material is suitable for industrial scale application.

The invention provides a lithium-air battery positive electrode employing hydroxyl cobalt oxide as a catalyst. The positive electrode comprises a positive electrode base material and a positive electrode material coating coated on the positive electrode base material; the positive electrode material coating is prepared from the following components in percentage by mass: 5%-40% of hydroxyl cobalt oxide as a catalyst component, 50%-90% of a carbon material and the balance of an adhesive. The invention further provides a method for preparing the positive electrode of the lithium-air battery. The method comprises the following steps: mixing and grinding a formula amount of hydroxyl cobalt oxide and carbon material, and dissolving the adhesive into a solvent to obtain an adhesive solution; mixing the fully mixed and ground mixture and the adhesive solution to from uniformly dispersed slurry; and coating the positive electrode base material with the uniformly dispersed slurry, and carrying out drying and pressing to obtain a positive plate of the lithium-air battery. The discharge capacity of the lithium-air battery can be improved; battery polarization is reduced; and the cycle times of the battery are improved.

The invention provides a method for separating heavy metals in trichlorosilane. The method comprises the following steps of (1) pressurizing and cooling the to-be-treated trichlorosilane, wherein thepressure of trichlorosilane is 1.2MPa, and the temperature is lower than 50 DEG C; (2) enabling the pressurized and cooled trichlorosilane to pass through a resin adsorption tower at the pressure of 1.2MPa and the temperature being lower than 50 DEG C, and filling amino carboxylate chelating resin into the resin adsorption tower, so as to obtain trichlorosilane with separated heavy metal. The method has the advantages that the removal rate of heavy metal is high and is better than the removal rate of the existing distilling method; the safety and reliability are realized, the quality control and safety control have been verified on two industrial projects, and the method is suitable for industrialized scale application.

The invention discloses a preparation method of oxymethylisourea acetate, which comprises the following steps: 1) the methanol solution of the oxymethylisourea bisulfate is reacted with sodium acetate and sodium hydroxide at the temperature of 10 to 65 DEG C for 2 to 10 hours; the molar ratio of the oxymethylisourea bisulfate to the sodium hydroxide and the menthol is 1:1:6 to 10 and the molar ratio of the oxymethylisourea bisulfate to the sodium acetate and the sodium hydroxide is 1:0.8 to 1.5:0.8 to 1.50; 2) the precipitated sodium sulfate is removed from the reaction mixture at the temperature of the step 1); 3) the reaction solution is condensed by the distillation of the menthol and the condensation temperature is 40 to 80 DEG C; 4) the concentrated solution of the oxymethylisourea acetate is cooled, crystallized and centrifugally separated. The synthesized product of the invention is high in purity, high in yield and simple in technique; the method is especially suitable for the application of industrial scale.

The invention discloses a chenodeoxycholic acid phenylethylamine salt, a preparation method and a refining method thereof, and a chenodeoxycholic acid preparation method, relates to the technical field of chenodeoxycholic acid extraction, and aims to solve the problem that a chenodeoxycholic acid product with the content of about 98% required by customers cannot be prepared in the prior art. Alpha-phenylethylamine is added into a chenodeoxycholic acid solution to form salt crystals, and chenodeoxycholic acid phenylethylamine salt is obtained through filtering, wherein the alpha-phenylethylamine is racemate or R-(+)-alpha-phenylethylamine. The method has the advantages that the salifying effect of chenodeoxycholic acid and R-(+)-a-phenylethylamine is the best, the selectivity is highest, the chenodeoxycholic acid impurities are mainly removed from the mother liquor obtained by pulping the chenodeoxycholic acid phenylethylamine salt, the lost chenodeoxycholic acid is minimum, the refining yield is highest, the purity is high, the content is high and is 98% or above, the batch is large, and the method is suitable for industrial large-scale application.