523results about How to "Ease of industrial scale production" patented technology

The invention discloses a method to prepare SAPO-34 molecule sieve through liquid phase crystallization: the precursor compounds of aluminum, silicon and phosphorous are prepared into dry gel, then the dry gel powder and a water solution of organic amine template are placed in a stainless steel high pressure vessel, and the SAPO-34 molecule sieve is synthesized through liquid crystallization. The molecule sieve after being treated can be used for a catalyst for transferring methanol into low carbon olefins. The method solves the wall sticking trouble of hydrothermal synthesis, and has the advantages of simple preparation process, good crystallization degree, simple equipments, and a normal high pressure stainless steel reaction boil can be adopted in the crystallization process, which is beneficial to industrialized mass production, and the organic amine template can be recycled.

The invention provides an iron carbide particle, and a fabrication method and an application thereof. Iron carbide is a nanoparticle taking Fe5C2 as a main component, and a particle size is 1-100nm. The fabrication method of the iron carbide particle comprises the following steps that a carbonization inductive agent and a solvent are mixed to form a mixed solution, a mole ratio of the carbonization inductive agent to the solvent is 1:(100-600), the carbonization inductive agent is halogenated ammonium salt, and the solvent is a long-chain amine solvent with a boiling point greater than 250 DEG C; a zero-valent iron organic compound is added to the mixed solution which is heated to 180-200 DEG C in a protective atmosphere; a reaction system is controlled at 250-380 DEG C for 10-120min; solid-liquid separation is performed after the reaction system is cooled; and the iron carbide particle product is collected. The iron carbide particle takes Fe5C2 as a major phase, is in a nanoparticle shape, can show higher catalytic activity, and is particularly applicable to catalysis of fischer-tropsch synthesis.

The invention belongs to the inorganic nonmetal field, and relates to a corundum-mullite honeycomb ceramic heat accumulator for waste heat recovery of high-temperature kiln tail gas. The honeycomb ceramic heat accumulator is prepared by the following steps of: forming ceramic powder from corundum, mullite, alumina, clay and the like; adding cellulose, glycerol, glue and water to prepare plastic mud; and mixing, mixing mud, performing vacuum pug, forming, drying and performing high-temperature sintering. The honeycomb ceramic heat accumulator prepared by the method has the characteristics of superior high temperature strength, high heat accumulation capacity, high heat exchange speed, high thermal shock stability, low cost, easiness in operation and adaptation to industrial production.

The invention relates to a graphene enhanced aluminium-based silicon carbide composite and a preparation method thereof. The composite comprises the following substances by volume percent: 40% to 70% of silicon carbide and 0.5% to 5% of graphene, and the balance being aluminium alloy. The composite is prepared through the powder metallurgy method and is obtained through the steps of blending, powder mixing, bagging, vacuum degassing and hot iso-hydrostatic forming treatment. The composite has the advantages of high thermal conductivity, high strength, high plasticity, light weight, good thermal diffusivity, isotropy, and the like, and becomes a second-generation electronic packaging material with wide application.

The present invention relates to an aluminium oxide foamed ceramic filter with special high-temperature chemical stability. Said aluminium oxide foamed ceramic filter is made up by adopting the following steps: using magnesium oxide, boron carbide and boron trioxide to form ceramic powder, then adding methyl cellulose and water to prepare slurry, using soft polyurethane foamed plastics as carrier, impregnating said carrier with said slurry, extruding to make blank material, drying and sintering so as to obtain the invented magnesium oxide foamed ceramic filter. The invented foamed ceramic filter has good high-temperature stability in the molten magnesium alloy, does not contaminate alloy and possesses good filtering and adsorption efficiency for removing oxide impurity and flux impurity form molten magnesium alloy, so that its filtering purification effect is good.

The invention relates to a molybdenum oxide/nitrogen-doped carbon composite electrode material and a preparation method thereof, and belongs to the technical field of preparation of lithium ion battery electrode materials. The molybdenum oxide/nitrogen-doped carbon composite electrode material of a lithium ion battery is prepared from pyrolytic organic amine and an intercalation compound of molybdenum trioxide. The molybdenum oxide/nitrogen-doped carbon composite electrode material has the advantages that homogeneous in-situ composition of nitrogen-doped carbon and molybdenum oxide is realized; the electrical conductivity of the electrode material is improved, and the embedding/stripping capacity of lithium ions is enhanced, so that high specific capacity and good cycle performance are obtained. The molybdenum oxide/nitrogen-doped carbon composite electrode material prepared by the method is a lithium ion battery negative material with excellent performance; the synthesis method is simple in process and low in preparation cost; and large-scale industrial production is easy to realize.

The invention provides pineapple bran pressed and packaged fermented feed and a production method thereof. Because the pineapple bran has higher feeding value and pineapple proteinase has medicinal effect on animals, the pineapple bran is used as a main raw material; the pineapple bran is added with a leaven, a nutrient additive and a moisture absorbent to prepare the pressed and packaged fermented feed by using scale production equipment through squeezing, drying, pressing and packaging, seal packaging and other processing techniques, wherein the water content of the product is between 50 and 70 percent; and the fermented pineapple bran feed is a special feed additive for beef cattle, dairy cattle, mutton sheep, deer and pig. The method has the advantages of simple process, less equipment investment and low cost, changes waste into treasure, and opens up a novel way for utilizing pineapple processing waste resources; the fermented feed has the advantages of good palatability, rich smell and certain medicinal value, is a green feed, can be processed either on a large scale or by farmers, and can be processed by flexible and variable methods; and the finished feed product has small volume and high density, can be preserved and stored for a long time and transported for long distance, reduces transportation cost, and has remarkable social and economic benefit.

The invention discloses a synthetic method of [1-methyl-2-(8'-octyl hydroxamic acid group)-5-N,N-bi(2'-chloroethyl)]-1H-benzimidazole. NL-101, namely [1-methyl-2-(8'-octyl hydroxamic acid group)-5-N,N-bi(2'-chloroethyl)]-1H-benzimidazole is prepared from chloroacetic acid replacing hypertoxic low-boiling ethylene oxide as a raw material by multi-reactions in one pot. The separating and purifying step is cancelled, the synthetic route is short, and the reaction environment in particular including temperature, pressure and the like can be safely controlled and the method is green and environment-friendly. The invention also discloses a series of intermediate compounds obtained in the reaction of synthesizing NL-101. The purity of NL-101 prepared by the synthetic route through analysis and characterization reaches 95%, and the purity after recrystallization and refining is greater than 99%. The method is high in product yield, easy to operate, and beneficial for industrialized production in a large scale.

The invention relates to a preparation and separation method of docosapentaenoic acid methyl ester and docosahexaenoic acid methyl ester. Microalgae oil is used as raw material to prepare docosapentaenoic acid and docosahexaenoic acid which are mixed with fatty acid to prepare the docosapentaenoic acid methyl ester and the docosahexaenoic acid methyl ester. The separation method of the the docosapentaenoic acid methyl ester and the docosahexaenoic acid methyl ester provided by the method adopts a silver nitrate column method of separating. In the silver nitrate column method, the quality of the methyl ester sample introduction of the mixed fatty acid is 0.5 percent to 10 percent of the quality of filled silver nitrate blangel; elution gradient is n-hexane solution containing acetone the content of which is 0.5 percent to 15 percent; the elution speed is 0.5 to 5ml/min. The preparation and separation method utilizes the silver nitrate column method to obtain the high purity docosapentaenoic acid methyl ester and the high purity docosahexaenoic acid methyl ester, wherein, the content of DPA is raised from 20.32 percent in raw oil to 99.61 percent, the content of DHA is raised from 44.83 percent to 99.02 percent, and the yield rate by using the silver nitrate column method can reach more than 90 percent.

The invention provides a non-alkali composite flooding compound, comprising the following components in percentage by weight: 0.005-0.30% of straight-chain fatty alcohol ether carboxylic betaine amphoteric surfactant, 0.05-0.25% of polymer, and the balance of oilfield injected clear water or return water. According to the invention, the straight-chain fatty alcohol ether carboxylic betaine amphoteric surfactant is used as the essential component of the non-alkali composite flooding compound, to form surfactant/polymer binary system which can reach ultra interfacial tension range with middle-low-temperature middle-low-salt oil deposit and high-temperature high-salt oil deposit, in this way, the requirements on non-alkali composite oil flooding are satisfied.

The invention relates to a graphene, aluminum and silicon carbide composite material and a preparation method thereof. The composite material is prepared from of constituents of 10-40 vol% of silicon carbide, 0.5-2 wt% of graphene, and the balance aluminum alloy. The composite material is prepared through a powder metallurgic method and can be obtained through proportioning, powder mixing, packaging, vacuum degassing and hot isostatic forming. The composite material has the advantages of low density, low weight, high hardness, high tensile strength and the like, the strength, fatigue resistance and toughness of the material are remarkably improved through addition of a proper amount of graphene, and thus the composite material has broader application prospects in the field of structural pieces.

The invention discloses a dried beancurd with an egg filling and a production method thereof, and changes the traditional processing method which adopts the pressure molding of soybean milk with a coagulator and marinating in brine. In the method of the invention, a concentrated soup is added to soybean protein powder to directly season the product without marinating, and then eggs are added according to a certain ratio, mixed and directly heated to be molded without adding any coagulator, thereby making the processing method more convenient. By using the eggs and the soybean protein as the main raw materials, the method comprises the following steps of: adding the concentrated soup for boiling meat, salt, sugar and gourmet powder to the raw materials, mixing, stewing, cooling, slicing, packaging and sterilizing. The product combines the animal protein and the vegetable protein, thereby being more abundant in nutrient components and more elastic. Besides, the product is easy to realize the large-scale industrial production, and can be produced into different tastes, such as spiced taste, spicy taste, spicy and hot taste, barbecue taste and chilli taste.

The present invention relates to the preparation process of nanometer silver iodide powder. Clear silver sulfate water solution containing silver nitrate in 0.1-0.4 M/L and complexing agent in 0.034-0.2 M/L is dropped slowly into clear potassium iodide water solution containing potassium iodide in 0.1-0.4 M/L, complexing agent in 0.034-0.2 M/L and dispersant in 0.01-0.04 M/L at normal temperature and normal pressure via stirring, and the product is let stand to deposit to obtain nanometer silver iodide deposit. The nanometer silver iodide deposit is filtered, washed and dried at 80-100 deg.c for 1-2.5 hr to obtain nanometer silver iodide powder with granularity below 100 nm. The process is easy to control, pollution-free and suitable for industrial production, and the product has high quality and low cost.

The invention relates to a C-doped alpha-Al2O3 transparent ceramic thermoluminescent and photoluminescent material and a preparation method thereof and belongs to the technical field of ceramic material manufacturing techniques. The method adopts high-purity alpha-Al2O3 and carbon powder or graphite as raw materials and adopts MgO and La2O3 or Y2O3 as sintering aids and a solidoid sintering method to prepare the alpha-Al2O3:C transparent ceramic thermoluminescent and photoluminescent material under a condition of a lower temperature. Detection experiments show that the alpha-Al2O3:C transparent ceramic material prepared by the method has an excellent thermoluminescent property and can be used as a measurement material for radiation dose.

The invention discloses a method for preparing a halogen-free high-efficiency flame retardant aryloxy cyclotriphosphazene compound. The flame retardant is a pure white crystal product prepared by reacting sodium phenate and hexachlorocyclotriphosphazene serving as raw materials with dioxane serving as a solvent under heating and stirring, filtering and purifying. The preparation method of the flame retardant overcomes the defects of long reaction time, a yellow product color and high production cost existing in the conventional synthesis method commonly. The prepared flame retardant has the characteristics of high efficiency, no halogen, flame retardance, no toxicity, low smoke and the like, has high compatibility with most of organic polymer materials, and has processing stability and using stability.

A process for preparing 3 (or 4)-nitro o-phenylenedinitrile features that a solvent method instead of solid-phase roast method is used to prepare 3 (or 4)-nitro phthaloyimine and the amidation process of 3 (or 4)-nitro phthaloymidine is improved. Its advantages are gentle reaction condition, high purity of product, high safety and less pollution.

The invention relates to method for preparing monodisperse antimony-doped tin oxide nano-powder. The method comprises the following main steps: preparing a precursor under a certain reaction condition; stewing the precursor, washing, filtering and drying a filter cake; grinding and calcining, thereby finally obtaining the nano-powder. The method has the characteristics that a mixed solution of antimonic salt, tin salt, a compounding agent and a dispersing agent is adopted to react; a precipitator is finally added. Thus, the prepared powder is good in dispersity, less in agglomeration, complete in crystallization, and small in particle size distribution; the particle size of the powder is 12-17nm; meanwhile, the preparation method is simple and convenient to prepare, simple in technology, low in cost, short in reaction period, and easy for realization industrial production.

The present invention discloses the preparation process of one kind of chiral 4-substituent-2-oxazolidone. The preparation process includes the first reducing chiral amino acid into alcohol in the presence of Lewis acid and catalyst metal boron compound, the subsequent acylation with acyl chloride compound and no phosgene, and cyclization in buffering solution with strong alkali catalyst. The present invention has low cost, less reaction steps, less wastes produced, high product quality and high total yield, and is suitable for industrial production.