91results about How to "Easy industrial operation" patented technology

The invention discloses a method for efficiently degrading lignocelluloses raw material. The method comprises the following steps of: simple smashing of raw material as well as enzymolysis of normal pressure microwave unite alkali liquor and cationic surface active agent disposal raw material and nonionic surfactant auxiliary cellulose, wherein the roughly smashed lignocelluloses raw material, the cationic surface active agent and the alkali liquor are mixed, after microwave processing at normal temperature, liquid and solid are separated, and furthermore, the nonionic surfactant auxiliary cellulose is added for solid enzymolysis so as to obtain a sugar liquid. According to the method, the advantages of the physical method and the chemical pretreatment method are complementary, so that the degree of crystallinity of the cellulose raw material is effectively lowered, the pretreatment time is shortened, and the pretreatment effect is improved; furthermore, alkali liquor with low concentration is beneficial to effective recycle in industrial production, pretreatment of lignocelluloses raw material at normal temperature can also lower the energy consumption in the pretreatment process obviously, and sugar liquid with higher concentration can be obtained in shorter hydrolysis time as the nonionic surfactant auxiliary cellulose is used for enzymolysis.

The invention relates to a method for preparing cyclic carbonate by reacting normal pressure carbon dioxide with epoxide. Propylene carbonate or ethylene carbonate is prepared by reaction under normal pressure carbon dioxide by taking epoxypropane or ethylene oxide as a substrate, corresponding propylene carbonate or ethylene carbonate as a solvent and Salen-Zn and tetraethyl ammonium bromide as a dual component catalyst, wherein the Salen-Zn is bissalicylaldehyde ethylenediamine-Zn, salicyladehyde cyclohexanediamine-Zn or bis-salicylaldehyde o-phenylenediamine-Zn. The method provided by the invention has the advantages that the catalyst is convenient to prepare, low in cost and less in use level; by using the product as the solvent, posttreatment is convenient; the method is low in reaction pressure, great in rate, safe to operate and suitable for scaled industrial production.

The invention refers to a synthetic method of insect growth regulator of substituted benzoyl urea and to be specific involves the synthetic method of fluorin bell urea, fluorin insect urea and diflubenzuron. It chooses the 2, 6-difluoro benzonitrile as the starting material and gets the compound of the substituted benzoyl urea after fluorination, hydrolysis, esterification and addition. The method adopts the potasium fluoride with high activity and quaternary ammonium salt as the catalyzer during the fluorination, which shortens the time of the fluorination reaction greatly, chooses the base catalysis during the hydrolysis, which reduces the special requirement to the equipment, uses the phosgene instead of the oxalyl chloride during the esterification to decrease the reaction cost and employs the catalyzer during the addition to increase the yield of the reaction. The invention is featured by the high yield, simple steps and cheap raw material and is more adaptable to the scale of the industrial production. Through the method, the yield of the diflubenzuron is 97%, which of the fluorin bell urea 93% and that of the fluorin insect urea 86%.

The invention relates to a 4032 alloy alterant and a use method thereof; the alterant comprises an Al-P and Al-5Ti-B intermediate alloy, and the following components in percentage by weight: P: 0.028 to 0.056 percent, Ti: 0.01 to 0.07 percent, B: 0.002 to 0.014 percent, and the balance aluminum. The essentials of the use method thereof are as follows: after the 4032 alloy is initially refined, Al-3.5 percent P alterant which is 0.6 to 1.6 percent of the ingredient weight of the 4032 alloy is added in at 750 to 850DEG C, to be uniformly stirred, and the heat is insulated for 15 to 100min; the materials are refined again; and Al-5Ti-B which is 0.3 to 1.6 percent of the weight of the 4032 alloy is added in at 750 to 770DEG C, and the heat is insulated for 5 to 12min. The alterant and the use method thereof can refine the primary crystal silicon to 18mu m before the thermal processing and the heat treatment of the 4032 alloy, and the nodularity is higher than 50 percent, and the mechanical property is greatly improved. The invention realizes the effective metamorphism of the 4032 alloy, and simultaneously develops a novel idea for the metamorphic technology of Al-Si eutectic alloys.

The invention belongs to the technical field of energy, and discloses a gas hydrate accelerant and an application thereof in saline-water desalting and carbon dioxide capturing. The gas hydrate accelerant has active components including dynamic accelerants and thermodynamic accelerants, wherein the dynamic accelerants are more than one kind of amino acid; and the thermodynamic accelerants are more than one of tetrahydrofuran and cyclohexane. The gas hydrate accelerant can be applied to saline-water desalting and carbon dioxide capturing. According to the invention, the amino acid is used as the gas hydrate accelerant, which is nontoxic and harmless, so that induction time of hydrate can be effectively reduced, gas storage capacity and gas storage density of the hydrate can be improved, and seawater can be efficiently separated and desalted, and thus combined application of gas separation and seawater desalting is achieved; THF and the other hydrate are used as stabilizers, so that stability of the gas hydrate can be improved while the formation condition of the hydrate is reduced, and thus industrial operation is facilitated.

The invention relates to a preparation method of a liquid antioxidant 4,6-di(octylsulfanylmethyl) o-cresol. The preparation method comprises the following steps of: casting o-cresol, n-octyl mercaptan and paraformaldehyde in specified amount to a reaction kettle; adding a reaction solvent or then adding into water; casting a solid catalyst strong alkali and weak acid salt; then, starting stirring; continuously introducing or dropping an organic amine catalyst with a certain time; then, heating to reflux and performing reaction; after reaction, treating to obtain a product with high purity, less smell and low content of formaldehyde. The process is simple in industrial operation, low in cost and easy to realize. The yield based on o-cresol is greater than or equal to 98.0%, and the product obtained is approximately colorless. APHA is less than or equal to 10, and the product is transparent and the product purity is greater than or equal to 98.0%.

The invention discloses a method for preparing polyester by ring-opening polymerization and belongs to the technical field of organic metal catalyzed high molecular materials. The method comprises the following steps: (1) combining organic phosphate and a metallic compound through an ion bond to obtain organic phosphate metallic salt; (2) under a reaction condition, carrying out dual-activation on a cyclic monomer and an initiator by utilizing the organic phosphate metallic salt; (3) catalyzing the cyclic monomer by the organic phosphate metallic salt to be subjected to the ring-opening polymerization in the presence of an alcohol type initiator, so as to obtain the polyester. The method disclosed by the invention has the advantages of simple and convenient process, low cost, high reaction speed, controllable process and narrow molecular weight distribution.

The invention discloses a phosphate starch biodegradable film and a preparation method of the phosphate starch biodegradable film, and is characterized in that the phosphate starch biodegradable film contains starch, polyvinyl alcohol, glyoxal, urea, phosphoric acid and glycerol; and phosphate starch is a mixture of starch, glyoxal, phosphoric acid, urea and polyvinyl alcohol. The invention has the advantages as follows: starch is treated with an appropriate amount of modification cross-linking agent, so as to greatly improve the water resistance of plastics; pure starch has high brittleness,and an appropriate amount of plasticizer is adopted to enhance ductility of the film, which is more suitable for industrial mass production; the material is endowed with different mechanical properties by adjusting the contents of phosphoric acid and urea and the consumption of plasticizer, with high technological content and novelty; the preparation process adopts conventional plastic process equipment and method, has a simple process and is easy to operate; the film is made from commercial starch by modification, plasticization and tape casting and is easily decomposed by microorganisms into carbon dioxide and water, with no environmental pollution; and starch is a renewable resource which is inexhaustible in supply and always available for use.

The invention discloses a method for separating MEOH-DMC (methanol-dimethyl carbonate) through vapor permeation, which belongs to the technical field of separation of methanol-dimethyl carbonate. The method comprises the following steps: firstly, with Na2O.n, SiO2, Al (OH)3 and Zn (OH) 2 as raw materials and a porous a-Al2O3 supporting membrane tube or a porous mullite membrane tube as a supporting membrane tube, preparing a NaY-Zn molecular sieve membrane through hydrothermal synthesis, and then, conveying MEOH-DMC saturated mixed vapor with temperature of 121-140 DEG C and pressure of 0.63-1.08 Mpa into a molecular sieve membrane separator equipped with the NaY-Zn molecular sieve membrane, and maintaining the vacuum absolute pressure of the permeation side of the molecular sieve membrane separator to 28-95 Kpa through a vacuumizing method, wherein the MEOH in the mixed vapor preferentially permeates through the molecular sieve membrane to be enriched on the permeation side of the membrane and is condensed into liquid under low vacuum degree, and the mixed vapor on the retentate side is further separated by multiple levels of serially connected molecular sieve membrane separators. The method disclosed by the invention can be used for effectively improving the separating performance of the MEOH-DMC and has the advantages of small investment, low operation cost and the like.

The invention discloses thermal spraying powder. Aluminum oxide or titanium dioxide is used, graphene is coated to make particles, thus the graphene is protected from being oxidized by a high temperature in the thermal spraying process, and the graphene in a thermal spraying coating to maximum extent. Ceramic powder is coated on the surface of the graphene to form graphene particles coated by theceramic powder, in the process of thermal spraying, the graphene is isolated from the high temperature through the ceramic powder, thus the graphene is not prone to being gasified and lost, a large amount of grahene remains in the coating after spraying, thus the prepared coating has the good self-lubricating effect, wear-resisting performance of the coating is improved, and application of the coating is broadened. The preparation method of the thermal spraying powder is simple, high in success rate and convenient to industrial operation.

The present invention discloses a new synthesis method of 3,4-dimethoxyphenylacetaldehyde, in which 3,4- dimethoxy- benzaldehyde is adopted as the raw material, and TEBA or TBAB adopted is adopted as the transfer catalyst in organic or mixed solvent under alkaline condition, Darzen's condensation reaction is carried out under the condition of the temperature controlled at 10 DEG C to 40 DEG C and the reaction is carried out with the duration roughly within 8 to 72 hours, then hydrolyzation and decarboxylation is carried out in the mixed solvent to obtain 3,4-dimethoxyphenylacetaldehyde. The present invention carries out Darzen's reaction with the phase-transfer catalysis, avoids the substances including expensive potassium tert-butoxide, flammable and explosive sodium, and virulent methyrl, and has a high yield of 3,4- dimethoxy- benzaldehyde with stable content, and simple industrial operation in favor of massive industrialized production.

The invention provides a carbon-deposition-resistant catalytic cracking catalyst and a preparation method thereof. The method comprises the following steps: adding kaolin into deionized water, and stirring to uniformly disperse kaolin, so as to obtain an aqueous solution of kaolin; adding USY type molecular sieve, adding aluminium sol, stirring to uniformly mix USY type molecular sieve and aluminium sol, adding fluorine-containing SAPO-11 molecular sieve, and stirring to uniformly mix the materials; adding pseudo-boehmite, and dropwise adding hydrochloric acid for acidifying, so as to obtain a sol of the carbon-deposition-resistant catalytic cracking catalyst; baking to evaporate water, and then performing roasting, so as to obtain a fresh agent of the carbon-deposition-resistant catalytic cracking catalyst; and performing hydrothermal ageing processing, so as to obtain the carbon-deposition-resistant catalytic cracking catalyst. The catalyst preparation technology is simple and easy for industrial operation, the catalyst is high in catalytic activity and substantial in carbon deposition resistance, and during catalytic cracking, the catalyst is capable of improving conversion rate, reducing dry-gas yield and reducing coke selectivity, thereby optimizing product distribution.

The invention discloses a preparation method of 3', 4', 7-trihydroxy isoflavone (T1) and 4', 6, 7-trihydroxy isoflavone (T2). The T1 and T2 are used in military medicine Research. The present invention uses cheap and easy-to-get chemical raw materials: resorcinol and 3,4-dimethoxyphenylacetonitrile or 3,4-dimethoxyphenol and p-hydroxybenzonitrile as starting materials, and the improved Hoesch Reaction, carbo-increasing and ring-closing reaction and three-step reactions such as removing dimethyl protection, respectively obtained 3', 4', 7-trihydroxy isoflavone (T1) and 4', 6, 7-trihydroxy isoflavone (T2 ). The method has the characteristics of economy, high efficiency, environmental protection, industrialization and the like.

The invention discloses a method for preparing cyclic carbonate by converting carbon dioxide through a cobalt-based catalyst. According to the method, carbon dioxide and epoxide are utilized as raw materials, a conjugated cobalt porphyrin microporous polymer material is utilized as a heterogeneous catalyst, tetra n-butyl ammonium bromide is utilized as a cocatalyst, and high-efficiency and green catalysis is achieved to synthesize cyclic carbonate under normal temperature and normal pressure and without solvent. The method has the main advantages of simpleness in catalyst preparation method, low cost, high catalytic activity, stable structure performance, easiness in recycling, capability of being reutilized, moderate reaction conditions, quick speed, safety in operation and suitability for large-scale industrial production.

The invention discloses a finishing method of alcaine verapamil, which is characterized by the following: dissolving rough product of alcaine verapamil in the fitful quantity of water or hot solution of isopropanol; adding active charcoal; filtering; cooling; evolving; recrystallizing; improving purity over 99.5% and fusing point to 141.5-145 deg.c.

The invention claims a radiation modified soybean isolated protein / starch biodegradable plastic and a preparation method thereof, wherein the radiation modified soybean isolated protein / starch plastic is prepared by taking soybean isolated protein and starch as main materials and modifying the materials by ray radiation; when the biodegradable plastic is prepared, each material is mixed according to the following parts by weight: 85-95 parts of modified soybean isolated protein, 5-15 parts of modified starch, 1-3 parts of caprolactam, 10-20 parts of water and 10-25 parts of glycerol. The invention has the following advantages: the soybean isolated protein is modified by proper methanol or ethanol, so hydrophilic group in the protein is reduced and water resistance of the plastic is improved. Proper starch is taken as the filler, so that flexibility of the plastic is enhanced and cost is reduced to be suitable for industrial production. Meanwhile, by regulating content of the starch and irradiation dose, materials with different mechanical properties can be obtained, thereby obtaining high technology content and innovation. The preparation technology adopts a common plastic device and a method thereof, so the process is simple, and easy to operate. Furthermore, the radiation modified soybean isolated protein / starch plastic is formed by the modified soybean isolated protein and a plasticiser by hot pressing, so that the radiation modified soybean isolated protein / starch plastic, after being discarded, is very easy to decompose into carbon dioxide and water by microbe without environmental pollution. The soybean protein is an inexhaustible renewable resource.

The invention relates to a preparation method for wet copper slag formed pellets. The method comprises the steps that copper slag powder, carbon raw materials and limestone are mixed according to a mass ratio and stirring evenly to obtain a mixed material; a composite binder is added into the obtained mixed material for further mixing, and a composite material is obtained through even stirring; the obtained composite material is placed in a disc pelletizer for pelletizing, and wet pellets are obtained; and the obtained wet pellets are dried or aired, and the dry pellets are obtained. The composite binder is mainly composed of a low-priced organic binder, the adding amount is small, the low production cost is ensured, the ash content after roasting is relatively low, and impurities are not introduced excessively. A humate binder is used as a viscous colloidal substance and has the high viscidity and a certain carbon content, so that copper slag reduction is facilitated. The method is simple in industrial operation and low in energy consumption cost and facilitates industrial production.

The invention discloses a finishing method of alcaine verapamil, which is characterized by the following: dissolving rough product of alcaine verapamil in the fitful quantity of water or hot solution of isopropanol; adding active charcoal; filtering; cooling; evolving; recrystallizing; improving purity over 99.5% and fusing point to 141.5-145 deg.c.

The invention relates to a method for preparing 1,7-diazaspiro[4.5]decane and derivatives thereof, and mainly solves the technical problems that the synthetic route is long, the yield is low, an intermediate is difficult to purify, reaction conditions are rigorous, and mass production cannot be performed in the prior art. The method comprises the following steps of: performing Michael addition reaction on N-PG-3-nitropyridine serving as a raw material and acrylic ester or acrolein in alcoholic solution or acetonitrile to obtain N-PG-3-(3-nitropyridine-3-yl)propionate or N-PG-3-propanal-3-nitropyridine; adding a catalyst into the product in an organic solvent, and performing hydrogenation reduction ring-closing reaction to obtain 1,7-diaza-2-oxy-spiro[4.5]decane with a protective group or 1,7-diazaspiro[4.5]decane with a protective group; and adding a reducing agent into the 1,7-diaza-2-oxy-spiro[4.5]decane with the protective group in the organic solvent to obtain the 1,7-diazaspiro[4.5]decane with the protective group. The method has the advantages of a few reaction steps, high yield and mild conditions, and is a synthetic method with large-scale preparation value.

The invention provides a color protecting agent and method for fresh-cut rhizoma dioscoreae. The color protecting agent comprises L-ascorbic acid, citric acid and D-isoascorbic acid. The method includes: fast soaking the peeled, cleaned and sliced fresh rhizoma dioscoreae into the color protecting agent for color protecting, taking out, draining, wrapping with a fresh-keeping film, and preserving at 0-4 DEG C. The method has the advantages that enzyme activity can be inhibited effectively, browning of the fresh rhizoma dioscoreae can be well prevented, and the method is simple in process and easy in industrial operation.

The invention discloses a method for preparing cyclic carbonate by transforming carbon dioxide with an iron-based catalyst. The carbon dioxide and epoxide are taken as raw materials, a conjugated ferriporphyrin microporous polymer material is taken as a multiphase catalyst, and tetra-n-butylammonium bromide is taken as a co-catalyst to realize high-efficiency green catalytic synthesis of the cyclic carbonate under a normal-temperature, normal-pressure and solvent-free condition. The method has the major advantages of simple preparation method, low cost, high catalytic activity, stable structural performance, easiness in recycling and reusability of the catalyst, mild reaction conditions, high rate and safety in operation, and is suitable for large-scale industrial production.

The invention discloses a method for preparing cyclic carbonate by transforming a copper-based catalyst into carbon dioxide. Carbon dioxide and epoxide serve as raw materials, a conjugate copper porphyrin microporous polymer material serves as a heterogeneous catalyst, tetra-n-butylammonium bromide serves as a co-catalyst, and efficient green catalytic synthesis of cyclic carbonate is realized atnormal temperature and pressure in a solvent-free manner. The method mainly has the advantage that the catalyst is simple in preparation method, low in cost, high in catalytic activity, stable in structural performance, easy to recycle, reusable, mild in reaction condition, high in speed, safe to operate and applicable to large-scale industrial production.

The invention discloses a preparation method for cefmetazole sodium. The preparation method for the cefmetazole sodium comprises the following operation steps: (1), adding chloroform to 7-MAC as an initial raw material, stirring and dissolving; adding alkali, dropping cyanomethylthioacetyl chloride, and stirring to react to obtain cefmetazole diphenylmethyl ester; (2), enabling the cefmetazole diphenylmethyl ester obtained in the step (1) to react in an alchlor-anisole system to obtain an organic solution of cefmetazole acid; (3), preparing a sodium bicarbonate solution with the concentration of 5-20 wt%, controlling the temperature within a range from 5 DEG C below zero to 10 DEG C, adding the organic solution of cefmetazole acid, which is obtained in the step (2), stirring, leaving a mixture to stand and layer, taking out a water layer, adding activated carbon, stirring to decolorize, controlling the temperature to 0-5 DEG C, adding neutral alumina, stirring to decolorize, filtering to obtain a filtrate, and freeze-drying the filtrate to obtain the cefmetazole sodium. The preparation method for the cefmetazole sodium has the advantages of high yield, excellent product quality and convenience in industrial production.

The invention discloses a preparation method of cyclic carbonate by chromium-based catalyst. The chromium-based catalyst compounded by high-efficient green catalysis is realized under the condition ofconstant temperature high pressure solvent-free by using carbon dioxide and epoxide as raw materials, conjugated chrome porphyrin dipyridyl / conjugated chrome porphyrin pyrrole microporous polymer material as a poly-phase catalyst, and tetra-n-butylammonium bromide as co-catalyst. The method has the main advantages that the catalyst is simple in preparation method, low in cost, high in catalytic activity, stable in structure performance, easy to recycle and repeatable; the reaction condition is gentle, speed is quick and the operation is safe. The preparation method is applicable to the large-scale industrial production.

The invention discloses a method for preparing cyclic carbonate by aluminum-based catalysts. According to the method, carbon dioxide and epoxide serve as raw materials, conjugate aluminum porphyrin dipyridyl / conjugate aluminum porphyrin dipyrrole micro-porous polymer materials serve as heterogeneous catalysts, tetra-n-butylammonium bromide serves as a co-catalyst, and the cyclic carbonate is efficiently and greenly catalyzed and synthesized at normal temperature and normal pressure in a solvent-free manner. The method mainly has the advantages that the catalysts are simple in preparation method, low in cost, high in catalytic activity, stable in structure performance, easy to recycle, reusable, mild in reaction condition, rapid, safe to operate and applicable to large-scale industrial production.

Belonging to the drug synthesis field, the invention in particular relates to an improved preparation method of telavancin or a salt thereof. The preparation method adjusts the feeding sequence of Mannich reaction, controls the reaction temperature, greatly shortens the reaction time, and significantly reduces the content of bis-Mannich by-product. In addition, an intermediate compound III obtained by post-treatment with a low boiling point solvent is easy in industrial operation and has purity up to 95% or more.

The invention discloses a preparation method of cefmetazole sodium, comprising the following operation steps: (1) by taking 7-MAC as an initial material, reacting with cyano methylthio acetyl chloride, thus obtaining cefmetazole diphenylmethyl ester; (2) enabling the cefmetazole diphenylmethyl ester obtained in the step (1) to react in an alchlor-anisole system, thus obtaining an organic solution of cefmetazole acid; (3) preparing a sodium bicarbonate solution with the concentration being 5-20 weight percent, controlling the temperature to be -5 to 10 DEG C, adding the cefmetazole acid organic solution obtained in the step (2), stirring, controlling temperature, decoloring, filtering and freeze-drying, thus obtaining the cefmetazole sodium. According to the preparation method of the cefmetazole sodium, the obtained product has the advantages of high purity, low impurity content, good stability and the like, and is easy for industrial production, and anaphylaxis reducing and clinic application of a preparation are both obviously improved.

The invention discloses a method of preparing cyclic carbonate by converting zinc-based catalyst into carbon dioxide. The method of preparing the cyclic carbonate by converting the zinc-based catalystinto the carbon dioxide uses the carbon dioxide and epoxides as raw material, conjugated zinc porphyrin / conjugated zinc porphyrin biphenyl amine microporous polymer material as heterogeneous catalysts, and tetra-n-butylammonium bromide as co-catalysts, and achieving high efficiency green catalytic synthesis of cyclic carbonate under normal temperature and pressure without solvent. The method ofpreparing the cyclic carbonate by converting the zinc-based catalyst into the carbon dioxide has the main advantages of simple preparation method, low cost, high catalytic activity, stable structuralperformance, easy recovery, reusable, mild reaction conditions, fast speed, operational safety and applicability for large-scale industrial production.

The invention discloses a sauce and a preparation method thereof. The sauce is prepared from the following raw materials in parts by weight: 50-70 parts of spearmint pulp, 30-50 parts of garlic pulp,0.8-1.2 parts of salt, 2-5 parts of soy sauce, 4-8 parts of vinegar, 0.5-0.9 part of sesame oil and 90-100 parts of a condiment soaking liquid. The preparation method comprises the following steps: preparation of the spearmint pulp and the garlic pulp, preparation of the condiment soaking liquid, mixing, bagging and sterilization. The sauce of the invention is mainly prepared from spearmint, can be used for rice noodles mixed with the sauce, Liangpi, Lo mein, Liangfen, flour fish and the like, greatly increases people's appetite, has rich nutrients, has the effects of invigorating the spleen,promoting digestion, promoting urination, relaxing bowels, building up the body, refreshing brain and initiating intelligence, and is suitable for long-term consumption by various people. According tothe sauce provided by the invention, the method reserves the aroma of the spearmint to a great extent, increases the nutritional value of foods, opens a new way for the deep processing of spearmint,improves the added value and the economic benefit of spearmint, but also has simple production process, and is easy for industrial operation and low in cost.