39results about How to "Industrialization is less difficult" patented technology

The invention discloses a special additive for wear-resistant hydraulic oil with excellent thermal stability and a preparation method thereof. The special additive for the wear-resistant hydraulic oilwith excellent thermal stability is zinc di-dodecyl dithiophosphate, and the zinc di-dodecyl dithiophosphate is added in the wear-resistant hydraulic oil to improve the thermal stability of the wear-resistant hydraulic oil. The preparation method comprises the following steps: adding phosphorus pentasulfide in N-dodecanol time by time and reacting to generate thiophosphoric acids; and adding zinchydroxide in the thiophosphoric acids time by time and reacting to generate the zinc di-dodecyl dithiophosphate. The special additive for the wear-resistant hydraulic oil with excellent thermal stability and the preparation method thereof disclosed by the invention have the benefits that the zinc di-dodecyl dithiophosphate is used on the hydraulic oil to obviously improve the thermal stability ofthe hydraulic oil; and the production process is simpler, the industrialization difficulty is low, the application of a catalyst is also eliminated, the later waste treatment is reduced, and the production cost is obviously reduced.

The invention relates to a metallic element lattice doped silicon carbide reactor, and applications thereof in preparation of ethene through ethane dehydrogenation. The metallic element lattice dopedsilicon carbide reactor is invented base on a novel silicon carbide material which possesses excellent heat conductivity and chemical reactionlessness; based on the metallic element lattice doped silicon carbide reactor, and reaction conditions, the process is capable of realizing ethene high yield synthesis. The ethane conversion rate ranges from 70 to 100%; ethene selectivity ranges from 80 to 99.99%; propylene selectivity ranges from 0 to 5%; and aromatic hydrocarbons selectivity ranges from 0 to 5%. The metallic element lattice doped silicon carbide reactor possesses following characteristics: catalyst service life is long (>1000h), catalyst high temperature (<1700 DEG C) stability is excellent, ethane conversion rate and product selectivity are high, energy consumption is low, processrepeatability is excellent, and operation is safe and reliable; and the industrialized application prospect is promising.

The invention relates to a preparation method of a quartz catalytic reactor in steam catalytic cracking methane to olefins, aromatics and hydrogen. The process realizes efficient conversion of methane, generation of steam-compressed gas-phase condensed ring aromatics and secondary carbon deposits, and almost no participation of steam. Reaction, only a small amount of CO is generated, steam improves heat transfer efficiency, and high catalyst stability. The conversion rate of methane is 20-70%; the selectivity of olefins is 85-95%; the selectivity of benzene is 4.5-13%; the selectivity of CO is 0.5-2%; zero carbon deposition. The invention has the advantages of long catalyst life, good oxidation-reduction and hydrothermal stability at high temperature of the catalyst, high methane conversion rate and product selectivity, zero carbon deposition, no need for catalyst amplification, low industrialization difficulty, easy separation of products, good process repeatability, and easy operation. It has the characteristics of safety and reliability, and has broad industrial application prospects.

The invention discloses a method for preparing mebendazole, which belongs to the technical field of drug synthesis. The preparation method includes an acylation reaction and a Friedel-Crafts reaction; wherein, in the acylation reaction, trichlorotoluene is heated to 50-90° C. and then chlorinated Zinc aqueous solution, after the dropwise addition, carry out insulation reaction. After the reaction is completed, benzoyl chloride is obtained by distillation under reduced pressure; the Friedel-Crafts reaction is to cool down after mixing and stirring carbendazim, solvent, and anhydrous aluminum chloride, and then add benzoyl chloride dropwise. After the dropwise addition, continue to stir and insulate the reaction, then distill under reduced pressure to obtain the product mebendazole; the present invention abandons the traditional method of first Friedel-Crafts and then forming a ring, and uses carbendazim as a reactant to directly synthesize mebendazole. The yield is high, and compared with the traditional process, it has the characteristics of simple process, mild conditions and high atom utilization rate.

The invention discloses a technology and equipment for preparing a C / C (carbon / carbon) composite. The technology for rapidly preparing the C / C composite comprises the following steps that (1) a preform is pretreated; (2) tools are prepared; (3) furnace loading is conducted; (4) temperature gradient differential CVI (chemical vapor infiltration) treatment is conducted; (5) heating of a heating element and input of mixed gas are stopped sequentially after 100-300h; and (6) a cover plate, the outer tool, the preform and the inner tool are taken out to form the C / C composite with density of 1.4-1.7g / cm<3>. The invention further discloses the equipment for preparing the C / C composite. According to the technology and the equipment, the operation is simple; the densification period is short; the industrial difficulty is small; the densification rate is high; ineffective reaction can be avoided; the carbon yield can be increased; and pollution of a vacuum system can be prevented.

The invention relates to a preparation method for converting methane to olefins, aromatics and hydrogen in a quartz catalytic reactor under hydrogen-facing conditions. The process realizes efficient conversion of methane, hydrogen promotes efficient dissociation of methane, hydrogen inhibits the formation of heavy hydrocarbons, and high Catalyst stability and zero carbon buildup. The conversion rate of methane is 20-70%, the selectivity of olefins is 70-95%, the selectivity of benzene is 5-30%, and there is no carbon deposition. The invention has the advantages of long catalyst life, good oxidation-reduction and hydrothermal stability at high temperature of the catalyst, high methane conversion rate and product selectivity, zero carbon deposition, no need for catalyst amplification, low industrialization difficulty, easy separation of products, good process repeatability, and easy operation. It has the characteristics of safety and reliability, and has broad industrial application prospects.

The invention relates to a method for the co-catalytic conversion of methane and ethane into olefins, aromatics and hydrogen in a quartz catalytic reactor. Carbon deposits are formed. The conversion rate of methane in the invention is 20-70%, the selectivity of olefins is 60-90%, the selectivity of aromatics is 10-40%, and zero carbon deposit. The invention has the advantages of long catalyst life, good oxidation-reduction and hydrothermal stability at high temperature (<1700°C), high methane conversion rate and product selectivity, zero carbon deposition, no need for catalyst amplification, low industrialization difficulty, easy separation of products, and process It has the characteristics of good repeatability, safe and reliable operation, etc., and has broad industrial application prospects.

The invention provides a self-adsorbable flexible battery and a preparation method thereof. Cyclodextrin is grafted as a main body to a gel electrolyte polymer monomer to form a polymer monomer matrix carrying main molecules; The monomer matrix is ​​in-situ polymerized with the ungrafted gel electrolyte polymer monomer to generate a gel electrolyte incorporating host molecules; adamantane or ferrocene is grafted as a guest to the binder polymer monomer The polymer monomer matrix carrying the guest molecules is formed on the polymer monomer matrix; the prepared polymer monomer matrix carrying the guest molecules is polymerized with the ungrafted binder polymer monomer to generate a binder incorporating the guest molecules. ; Add the binder doped with guest molecules into the positive and negative electrodes, and encapsulate it with the gel electrolyte doped with host molecules to form a self-adsorbing sandwich flexible battery. Compared with the existing flexible batteries, the flexibility is improved while extending the The service life of the battery makes up for the shortcomings of the existing flexible battery technology.

The invention discloses a silicon carbide reactor, the material of the reactor is metal element lattice doped silicon carbide. The characteristics of the material with good thermal conductivity and chemical reaction inertness are utilized, ethylene is directly synthesized from methane through catalysis based on oxygen-free conditions in the reactor, thus zero carbon deposition of methane and highselectivity synthesis of ethylene are achieved, the convension rate of methane is 10-70%, the selectivity of ethylene is 40-75%, the selectivity of propylene is 5-15%, the selectivity of arenes is 0-40%, and zero carbon is deposited. The silicon carbide reactor has the characteristics of long catalyst lifetime(>1000 h), good stability of the catalyst under high temperature(<1700 DEG C), high conversion rate of methane and product selectivity, zero carbon deposition, small difficulty of industrialization, good process repeatability, and safe and reliable operation, and has broad industrial application prospect.

The invention relates to a preparation method of a barnidipine intermediate 3-(2-nitrile-ethyl)-5-methyl-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate. The preparation method is characterized by enabling 3-hydroxylpropionitrile and methyl acetoacetate to be subjected to ester exchange under the catalysis of N-bromosuccinimide (NBS), then, ammoniating with a mixture of ammonium acetate and ammonia water, and then, carrying out catalytic reaction by an organic acid, thereby obtaining a final product. The preparation method provided by the invention is used for overcoming the defects of the existing preparation methods that the yield is relatively low and the like, and is applicable to industrial production.

The invention belongs to the technical field of chemical synthesis, and in particular relates to a method for chemical synthesis of 3-chloro-1-propanol, wherein benzenesulfonic acid is used as a catalyst, and 1,3-propanediol is reacted with hydrochloric acid to synthesize 3-chloro-1-propanol, The method includes the following steps: firstly put 1,3-propanediol, part of hydrochloric acid and benzenesulfonic acid into the reaction kettle for reaction, then put the remaining hydrochloric acid into the reaction kettle, continue to react until the sampling and analysis are qualified, then put into toluene for heating and refluxing with water After the reaction with water, the temperature of the kettle is lowered to room temperature, the oil phase in the kettle is neutralized to neutrality, the oil phase is pumped into the rectification kettle, and the finished product is separated after rectification until the sampling is qualified. By using benzenesulfonic acid as the catalyst, the present invention improves the reaction efficiency and prevents excessive chlorination, no three wastes with high toxicity and high pollution are generated in the reaction, the by-products can still be recovered and reused, and the comprehensive yield can reach more than 95%. The conversion rate is high, the operability is high, the risk is small, and the difficulty of industrialization is low.

The invention relates to a preparation method of a catalyst-silicon carbide reactor and a method for catalyzing methane to directly synthesize ethylene under an oxygen-free condition. The catalyst-silicon carbide reactor is prepared on basis of a novel prepared silicon carbide material, and good thermal conductivity and chemical reaction inert characteristic of the material are utilized. Based onthe catalyst-silicon carbide reactor and reaction conditions, zero carbon deposition and high-selectivity synthesis of ethylene are realized. According to the invention, the conversion rate of methaneis 10-70%, the selectivity of olefin is 40-95%, the selectivity of propylene is 5-15%, the selectivity of aromatic hydrocarbon is 0-40%, and zero carbon deposition is achieved. The method provided bythe invention has the characteristics of long catalyst service life (1000 hours), good stability at a high temperature (1700 DEG C), high methane conversion rate and product selectivity, zero carbondeposition, low industrial difficulty, good process repeatability, safe and reliable operation and the like, and has a wide industrial application prospect.

The invention provides an in-situ implanted polymer particle solid electrolyte and a preparation method thereof. Stir and dissolve water with acetonitrile to obtain a transparent or translucent solution; add acrylamide, crosslinking agent, and initiator to the solution; continue to stir until the solution is evenly mixed again, pour it into a mold, and initiate polymerization at a wavelength of 365 nanometers of ultraviolet rays. After the polymerization is complete Stand still, and after the solvent acetonitrile is completely volatilized, a micron-level thick solid electrolyte film is obtained; the in-situ implanted polymer particle solid electrolyte prepared by the present invention has excellent performance, has high ion conductivity at room temperature, and has relatively high Good mechanical properties and excellent processability, the invention implants polymer particles in situ, the preparation method is simple, the preparation cost is low, the raw materials used are all from industrial products, and it is expected to realize mass industrial production.