101results about How to "Green production process" patented technology

The invention discloses a method for producing an aluminum-magnesium alloy by utilizing a liquid aluminum cathode method. The method is used for high-efficiently producing the high-quality aluminum-magnesium alloy. The method comprises the following steps of dissolving the high-purity magnesium oxide (MgO) in an electrolyte system consisting of Na3PO3-MgF2-NaCl in an electrolytic cell under the electrolytic temperature of 850DEG C to 900DEG C, wherein the aluminum liquid which is formed by melting a high-purity aluminum ingot is used as a liquid cathode; and applying a coil magnetic field with the intensity of 30mT to 40mT outside the electrolytic cell so as to enable the aluminum liquid to rotate under the electrolytic conditions that the anode current density is 0.47 to 0.52A/cm<2> and the high-purity graphite is adopted as an anode, reducing the magnesium ions on the rotating aluminum liquid cathode into elemental magnesium under the electromagnetic stirring effect to be uniformly dispersed into the aluminum liquid so as to form the aluminum-magnesium alloy product, and producing CO2 gas on the anode. The alloy prepared through the method is uniform in components and contains no impurity. The production process is continuous and easy to control.

The method comprises the following steps: dropwise adding hydrogen peroxide into a mixture of cyclic sulfite, an organic solvent and a solid catalyst to carry out catalytic oxidation reaction, filtering out the solid catalyst after the reaction is finished, standing filtrate for layering, taking an organic layer, and performing distilling and concentrating to obtain a cyclic sulfate product. Cheaphydrogen peroxide is used for directly catalyzing and oxidizing cyclic sulfite to prepare cyclic sulfate, so that on one hand, the reaction is mild and easy to control, and the reaction conversion rate is high; on the other hand, no waste salt is generated, the evaporation capacity of water is small, energy consumption is low, generated waste water is little, and the production process is more environmentally friendly; the used solid catalyst contains an active component, an active auxiliary agent and an oxide carrier, and can be recycled, so that the consumption of noble metals is reduced, and the production cost is greatly reduced; the cyclic sulfate prepared by the method is few in impurities, high in purity and wide in market prospect.

The invention discloses a supported nickel-copper alloy nano-catalyst, a preparation method thereof and application of catalytic hydrogenation. The invention utilizes a simple co-precipitation synthesis technique to self-assemble in an aqueous solution to obtain a large amount of layered nickel-copper hydroxide intercalated with organic anions as a precursor, and obtains nickel with high catalytic activity and stability through one-step in-situ solid-state pyrolysis under an inert atmosphere. Copper alloy/carbon nanocomposite catalyst. This method realizes the uniform dispersion of highly crystalline nickel-copper alloy nanoparticles in the graphitized carbon matrix, and there is a strong interaction between the metal and the support. The invention does not use additional reducing agent, surface active agent and organic solvent, reduces production cost and improves product purity. In the catalytic hydrogenation reaction performance test, the nickel-copper alloy/carbon nanocomposite catalyst prepared by the present invention showed higher catalytic activity and stability than the commercial platinum/carbon catalyst, and it still had High catalytic efficiency.

The invention provides an antiflaming straw big core board. The antiflaming straw big core board comprises two wood single boards and a homogenization straw core board arranged between the two wood single boards. The homogenization straw core board comprises, by mass, 8 parts to 9 parts of straw particles and 1.8 parts to 2.4 parts of an antiflaming binding agent, wherein the antiflaming binding agent comprises raw material including magnesium chloride, magnesium oxide, polyvinyl alcohol, sodium silicate, tartaric acid and ammonium polyphosphate. The antiflaming straw big core board has the good chemical properties of inflaming retarding, water prevention, mosquito prevention and the like and has the good physical mechanical performance, a wood large core board can be replaced with the antiflaming straw big core board, and the antiflaming straw big core board can be applied to various fields. The invention further provides a manufacturing method of the antiflaming straw big core board. The manufacturing method is simple and environment-friendly.

The invention relates to a high-selectivity preparation method of pyrrole compounds, which comprises the following steps: feeding organic materials and an acidic catalyst into a reactor; and reacting the organic materials in the reactor in the presence of gas containing reactive nitrogen compounds under heating conditions under the action of the catalyst, thereby generating a reaction system stream comprising one or more nitrogenous aromatic compounds, wherein the selectivity of the pyrrole compounds is up to higher than 80%.

The invention relates to a process for the resource recycling of acid and alkali from high-salinity and high-hardness wastewater. The process comprises the following steps: (1) pre-treating the high-salinity and high-hardness wastewater by virtue of a pressure film device to remove suspended solids in the wastewater until the suspended solids are lower than 1ppm; (2) introducing clarified wastewater pretreated in the step (1) into a cation exchange resin column, so as to decrease the hardness; (3) adjusting the pH value of the wastewater treated in the step (2) to be neutral, adding the wastewater into double-electrode film electroosmosis equipment, and preparing acid and alkali, so as to obtain products, namely sodium hydroxide and hydrochloric acid; and (4) diluting partial hydrochloricacid obtained in the step (3) into the cation exchange resin column, regenerating cation exchange resin, and simultaneously evaporating and concentrating eluant for crystlization, so as to obtain calcium chloride crystals and magnesium chloride crystals. The process is pollution-free in the whole process, the recovery rates of products, namely acid and alkali are high, and the wastewater treatmentcost is greatly lowered.

The invention discloses a method for extracting gardenia yellow pigment from a gardeniae longicarpae fruit, which comprises the following steps of: feeding gardeniae longicarpae fruit powder and a solid-phase reagent in a ball grinding mill for ball milling to be uniform; taking out powder formed by ball milling; adding water in the powder formed by ball milling; fully stirring and uniformly mixing, filtering and obtaining supernate; feeding the supernate to a macroporous resin chromatography column; eluting with 60 percent by weight of ethanol aqueous solution; collecting an eluent; condensing and evaporating to remove a solvent; drying and feeding the mixed solution to pass through the macroporous resin chromatography column; condensing and evaporating to remove the solvent; and drying to obtain the gardenia yellow pigment. The method disclosed by the invention is based on an extraction technology of mechanochemical reactions; and the solid-phase reagent used by the method can be selectively combined with the gardenia yellow pigment. Compared with a traditional extraction technology, the extraction rate and the purity of products can be improved by 10-20 percentage points.

The invention discloses a dextran enzyme producing strain with a high enzyme activity, and a method for preparing dextran enzyme with the strain. The strain is characterized by being a Hypocrea lixii F1002 strain separated from soil and being preserved by the Chinese General Microbiological Culture Collection Center, wherein the preservation number of the strain is CGMCC No. 4725. In the invention, dextran enzyme is prepared successfully by Hypocrea lixii F1002 fermentation, and dextran enzyme prepared by the method has a high enzyme activity and is an extracellular enzyme. The dextran enzymeprepared by the method is characterized in that an optimal action temperature is in a range of 25 to 30 DEG C; an optimal PH is in a range of 5.0 to 5.5; and a stabilization PH is in a range of 4.0 to 6.5. A degree of producing dextran enzyme by Hypocrea lixii F1002 fermentation is greater than 60 U/ml.

The invention provides a flame-retardant straw artificial composite board. The flame-retardant straw artificial composite board comprises a naked panel and a decorative finish layer which is arranged on at least one surface of the naked panel, wherein the naked panel comprises the following raw materials in parts by weight: 7 to 8 parts of crop straw particles, 0.8 to 1 part of adhesion agent and 0.8 to 1 part of flame retardant, wherein the flame retardant comprises magnesium oxide, calcium sulfate, aluminum hydroxide, brucite and zinc borate. The flame-retardant straw artificial composite board has very high chemical, physical and mechanical properties of flame retardancy, water resistance, insect resistance and the like, and can be applied to various fields instead of wood-based panels. The invention also provides a manufacturing method for the flame-retardant straw artificial composite board. According to the manufacturing method, the raw materials are subjected to curing and shaping processing by adopting a normal temperature cold pressing molding technology; energy resources are greatly saved; the product performance can also be improved; the product has the functions of preventing water and preventing fire; meanwhile, the equipment cost can also be greatly reduced; the overall production process is green and pollution-free.

The invention provides environment-friendly polymer cement wall waterproof slurry and a preparation method thereof. The slurry comprises a liquid material and a powder material, wherein the mass ratio of the liquid material to the powder material is 1:(3-5); the power material comprises, by weight, 35-40 parts of cement, 35-40 parts of quartz sand, 20-25 parts of ground calcium carbonate, 0.1-0.3 part of lubricating agent and 0.2-0.5 part of water reducing agent; the liquid material comprises, by weight, 0.4-0.6 part of dispersing agent, 44-50 parts of water, 0.2-0.4 part of defoaming agent and 45-55 parts of polymer emulsion, the polymer emulsion comprises pure an acrylic emulsion and a styrene-acrylic emulsion, and the mass ratio of the acrylic emulsion to the styrene-acrylic emulsion is 1:(3-5). The slurry and the preparation method thereof have the advantages that the materials used by the slurry use water as the medium, so that the slurry is a waterborne product; the preparation method is green in process, low in energy consumption and free of environment pollution, does not generate three wastes and satisfies the requirements of environment protection.

A hydrothermal synthesis of gadolinium-diethylentriaminepentaacetic acid is carried out by using gadolinium oxide and diethylentriaminepentaacetic acid, hydrothermal synthesizing, and obtaining gadolinium- diethylentriaminepentaacetic. It is an inorganic complex chemical synthetic technology. Its advantages include less impurities, high reacting speed and output efficiency.

The invention relates to a method for producing a cordyceps sinensis feed additive and a product, and belongs to the technical field of feed fermentation. The method comprises the following steps: firstly, quickly producing a large amount of mycelia through liquid fermentation by taking low-price beer dry yeasts and beer grains as raw materials; secondly, inoculating a large amount of mycelia into a solid culture medium for solid fermentation. According to the method, shallow tray type static and solid fermentation equipment is adopted for fermentation and is simple and convenient to operate, the fermentation cycle is short, the pollution is alleviated, the production cost is reduced, and the cordyceps sinensis mycelia can be efficiently produced to serve as the feed additive.

The invention belongs to the field of medicine synthesis, and relates to a novel synthesis method of a compound bepidic acid. The preparation method comprises the following steps: (1) carrying out primary alkylation on ethyl isobutyrate and 1, 5-dibromopentane under the action of lithium diisopropylamide to generate a compound 1; (2) carrying out alkylation twice on dibenzyl malonate and the compound 1 under the action of sodium hydride to generate a compound 2; (3) removing benzyl from the compound 2 under the action of Pd/C and hydrogen to obtain a compound 3; (4) carrying out electrochemical reaction on the compound 3 in a methanol solution of methanol and ammonia to obtain a compound 4; (5) finally carrying out sodium borohydride hydrolysis and potassium hydroxide hydrolysis on the compound 4, and acidifying to obtain the final bepidic acid. The method is carried out under electrochemical conditions, is mild in conditions and high in efficiency, and is suitable for industrial production.

The invention relates to a green and efficient heterogeneous catalyst for compounding 2,4-di-tert-butylphenol. The catalyst is a porous solid acid resin catalyst with high specific surface area. Phenol and isobutene are taken as reaction raw materials for producing 2,4-di-tert-butylphenol under a catalytic effect of the nontoxic harmless green solid acid resin catalyst. The catalyst provided by the invention is used for replacing a carclazyte catalyst in the present production, can be repeatedly reused, has the characteristics of long service life, is capable of greatly reducing the production cost of the catalyst, is capable of greatly reducing the solid waste generated by disposable use of the carclazyte catalyst and can realize the greening of the production process. Meanwhile, the heterogeneous catalyst for compounding 2,4-di-tert-butylphenol provided by the invention is simply separated, recycled and reused, the separating time of the present carclazyte catalyst is greatly shortened and the production efficiency is obviously increased.