77 results about "Compound organic" patented technology

The invention belongs to the technical field of oil and gas development, and particularly relates to an oil and gas well blocking remover and a preparation method thereof. The blocking remover comprises the following components: 5-8% of low-carbon composite organic acid, 5-7% of fluoboric acid, 6-9% of ammonium bifluoride, 4-6% of an anti-acid sludge mutual solvent, 2-4% of a corrosion inhibitor, 2-4% of polyoxypropylene polyoxyethylene propylene glycol ether, 8-12% of a permeation dispersion surfactant, 2-5% of a sulfur dissolving agent, 2-5% of a stable chlorine dioxide solution and the balance of water. The preparation method comprises the following steps: adding the low-carbon composite organic acid, the fluoboric acid and the ammonium bifluoride into water and stirring; adding an acid sludge resisting mutual solvent and a sulfur dissolving agent, and stirring; adding the corrosion inhibitor, the polyoxypropylene polyoxyethylene propylene glycol ether and the permeation dispersion surfactant, and stirring; and finally, reducing the stirring speed, adding the stable chlorine dioxide solution, and stirring to uniformly mix. The blocking remover provided by the invention is comprehensive in blocking removal function, very good in dissolving and dispersing performance on complex blocking substances, very small in corrosion damage to a shaft pipe wall and wide in applicability.

The invention relates to a method for efficiently extracting lithium by roasting lepidolite at low temperature by using composite organic acid. The invention relates to a method for efficiently extracting lithium by roasting lepidolite at low temperature by using composite organic acid, which comprises the following steps of: adding an activating agent into lepidolite concentrate, and pre-activating to obtain activated lepidolite concentrate powder; the lepidolite concentrate powder and a composite organic acid roasting agent are mixed, acidified and roasted, and a roasted product is obtained; adding water into the roasted product for leaching, and carrying out suction filtration to obtain a lithium-containing leachate; the composite organic acid roasting agent at least comprises methanesulfonic acid. According to the method, the problem that the lithium ion extraction efficiency is low due to the fact that the TOT layered structure in the lepidolite is difficult to damage is solved, and the problem that the lithium ion extraction efficiency is low due to the fact that Si-O bonds with high bond energy in an existing lepidolite crystal framework are difficult to dissociate is also solved.

The invention discloses an indolocarbazole compound, a perovskite solar cell and a preparation method, and belongs to the technical field of perovskite solar cells, the indolocarbazole compound provided by the invention is an organic small molecule material and has an asymmetric molecular structure, and an asymmetric conjugated structure system of the indolocarbazole compound enhances the molecular dipole moment and improves the photoelectric conversion efficiency. And the energy level matching is optimized. Meanwhile, benzene ring groups on side chains of molecules of the organic hole transport layer can further inhibit excessive aggregation of the molecules, uniform coverage is achieved, and efficient transport of carriers is achieved. Therefore, when the indolocarbazole compound organic small molecule material is used as a hole transport layer material for a perovskite solar cell, the energy levels of the highest occupied molecular orbital HOMO and the lowest unoccupied molecular orbital LUMO of the indolocarbazole compound organic small molecule material provided by the invention can be well matched with the energy level of an active layer material; therefore, the collection efficiency of current carriers is greatly improved, and the filling factor and the photoelectric conversion efficiency are improved.

The invention discloses an ultrafiltration separation device and method for a water body containing fluorinated alkyl substances, and belongs to the field of water treatment. The method comprises the following steps: S1, mixing a water body containing a fluorinated alkyl substance with a cationic surfactant solution, stirring, and standing to form a composite solution containing a compound; s2, the composite solution is subjected to membrane separation through an ultrafiltration membrane, and percolation effluent is obtained. According to the embodiment of the invention, the cationic surface active agent is mainly used for inducing the pollutants to be self-assembled into the compound with larger particle size, so that the pollutants can be effectively intercepted by the ultrafiltration membrane with larger pore size, and the problem that the traditional ultrafiltration membrane is difficult to treat small-molecule pollutants is solved. The separation method has the advantages of simplicity and convenience in operation, low energy consumption, high applicability and the like, and is suitable for the processes of pretreatment, concentration recovery and the like of perfluorinated and polyfluoroalkyl compound organic pollutants in wastewater.

The invention provides an organic acid excited solid waste-based cementing material, and belongs to the technical field of solid waste utilization. The solid waste-based cementing material excited by the organic acid comprises 90-105 parts by mass of a silicon-aluminum solid waste base material, 7-12 parts by mass of sulfate and 15.3-19.8 parts by mass of a composite organic acid exciting agent, wherein the composite organic acid exciting agent comprises main acid and polyacrylic acid, and the mass of the polyacrylic acid is 10%-40% of the mass of the main acid; the main acid is one or a mixture of citric acid and tartaric acid. According to the organic acid excited solid waste-based cementing material, strong base is prevented from being adopted as an exciting agent, and the defects of a strong base excitation system are avoided.

The invention relates to the technical field of quartz sand purification, in particular to a green and efficient purification method of high-purity quartz sand, which comprises four steps of mechanical-chemical synergistic pretreatment, microwave-assisted deep impurity removal, directional adsorption purification and ultrapure water washing and drying. The traditional hydrofluoric acid process is replaced by the composite organic acid, so that the COD (Chemical Oxygen Demand) of the wastewater is reduced by more than 90%, the waste liquid treatment cost is greatly reduced, meanwhile, the problem of corrosion of strong acid to equipment is avoided, the energy consumption is reduced by 40% through the microwave process, and no chlorine is discharged, so that the production process is more environment-friendly and safer, the content of Al2O3 is reduced from 500ppm to 8ppm, and the production cost is reduced. Compared with the prior art, the method provided by the invention has the advantages that the content of Fe2O3 is reduced from 200ppm to 3ppm, meanwhile, the inclusion removal rate is greater than 99.5%, and the purity of SiO2 reaches 99.995%, so that the problem that micron-sized inclusion impurities are difficult to deeply remove is solved, and the purification efficiency is greatly improved.

The invention discloses a method for removing aluminum, calcium and magnesium and recovering nickel from waste hydrogenation catalyst pickle liquor through complete extraction, and belongs to the technical field of hydrometallurgy. A method for removing aluminum, calcium and magnesium and recovering nickel from waste hydrogenation catalyst pickle liquor through complete extraction comprises the following steps that S1, the waste hydrogenation catalyst pickle liquor containing nickel, aluminum, calcium and magnesium is taken, the pH of the pickle liquor is adjusted, first-stage multi-stage counter-current extraction is conducted through a composite organic extraction phase, and an aluminum-loaded organic phase and aluminum-removed raffinate are obtained; s2, adjusting the pH value of the aluminum removal raffinate, and carrying out second-stage multi-stage counter-current extraction by adopting a composite organic extraction phase to obtain a calcium and magnesium loaded organic phase and a purified nickel sulfate solution; s3, the purified nickel sulfate solution is subjected to evaporative crystallization, and a nickel sulfate product is obtained; wherein the composite organic extraction phase comprises a main extraction agent, a synergistic extraction agent A and a synergistic extraction agent B; the method has the advantages of being high in nickel recovery rate, thorough in impurity removal, short in technological process, free of slag dust pollution and the like.

This invention discloses a weather-resistant, high-hardness composite anti-corrosion coating and its preparation method, belonging to the field of anti-corrosion coating technology. The preparation method includes: firstly, synthesizing an epoxy resin containing dynamic disulfide bonds by reacting dithiodibenzoic acid and epichlorohydrin in an alkaline aqueous phase; secondly, constructing a low surface energy siloxane network using hydroxyl-terminated polydimethylsiloxane and methyltriethoxysilane; subsequently, introducing chlorzoxazone and N-acetyl-p-aminophenol as composite organic corrosion inhibitors, blending them with the resin to obtain a composite base material; finally, adding graphene, carbon nanotubes, and inorganic anti-corrosion fillers, and cross-linking and curing to form a film using a polyamine curing agent. This invention suppresses microcracks through the dynamic stress relief of disulfide bonds, combined with the weather-resistant barrier of the siloxane network, the active interface passivation of the heteroatom corrosion inhibitor, and the three-dimensional synergistic mechanical bonding of carbon-based nanomaterials, achieving a perfect unity of ultra-strong corrosion resistance, excellent weather resistance, and high mechanical hardness in the coating.

The invention discloses a preparation method of a nitrogen-doped coal-based carbon material for methane enrichment, and belongs to the technical field of carbon materials for gas separation. The method comprises the following steps: carrying out controlled change on a coal structure through pretreatment of composite organic acid, mixing biomass waste as a nitrogen source with pretreated coal, and carrying out pyrolysis to obtain a nitrogen-doped coal-based crude product; and mixing the nitrogen-doped coal-based crude product with an activating agent, and activating in a nitrogen atmosphere to obtain the nitrogen-doped coal-based carbon material. Through pretreatment, chemical bonds in organic macromolecules in the coal are broken, the pore structure of the coal is improved, and the carbon element is enriched; the composite organic acid is used as a pickling agent, the biomass waste is used as a nitrogen source for nitrogen doping, use of a traditional high-energy-consumption chemical nitrogen source is reduced, pretreated coal and the nitrogen source are co-pyrolyzed to provide more micropores and channels for the carbon material, and the adsorption performance of the carbon material is obviously improved; the preparation process is simple and effective, and green preparation of the nitrogen-doped coal-based carbon material is realized.

This invention provides a method for preparing a foamed copper-based composite organic compound layer catalytic material, comprising the following steps: forming 8-hydroxyquinoline molybdenum (Mo(C)) on the surface of a foamed copper matrix. 9 H 6 NO) 4 Organic compound layer; 8-hydroxyquinoline molybdenum (Mo(C)) 9 H 6 NO) 4 The organic compound layer is converted into phthalimide 8-hydroxyquinoline molybdenum (C). 8 H 4 NO 2 ) 2 (C 9 H 6 NO) 2 ; Phthalimide 8-hydroxyquinoline molybdenum Mo(C) 8 H 4 NO 2 ) 2 (C 9 H 6 NO) 2 Conversion to copper phthalimide / 8-hydroxyquinoline molybdenum Cu(C) 8 H 4 NO 2 ) 2 / Mo(C 9 H 6 NO) 2 The foamed copper-based composite organic compound layer catalytic material is finally obtained. The catalytic material prepared by the method of this invention can effectively improve the Faradaic efficiency, ammonia selectivity, production rate, and nitrate removal rate of the electrochemical reduction of nitrate to ammonia technology.

The present application provides a method for extracting complex organic acid from the waste liquid of the extract of Rubus corchorifolius L.f. The waste liquid of the column chromatography effluent of the Rubus corchorifolius L.f. extract is taken, the specific gravity of the secondary waste liquid is adjusted to obtain the column loading liquid, the column loading liquid is passed through a resin column A, water washing is performed, the column effluent and the water washing liquid are collected to obtain a combined liquid 1, the combined liquid 1 is passed through a resin column B, water washing is performed, reagent C is used for elution, and the eluate is collected. The combined liquid 2 is obtained by passing through a resin column D and collecting the effluent and the water washing liquid, vacuum concentration is performed, crystallization is performed, and filtration is performed to obtain quinic acid.

The invention belongs to the technical field of drilling fluid plugging agents, and particularly relates to a water-based drilling fluid high-temperature-resistant plugging agent and a preparation method and device thereof.The water-based drilling fluid high-temperature-resistant plugging agent is prepared from, by weight, 20-30 parts of walnut shell powder, 10-20 parts of calcium silicate, 5-10 parts of mica sheets, 10-17 parts of a structure reinforcing agent, 1-3 parts of a dispersing agent and 1-2 parts of a lubricating agent. The structure reinforcing agent is composed of 5-10 parts of a fiber material and 5-7 parts of sodium silicate, the dispersing agent is a phosphate dispersing agent, and the lubricating agent is a silane compound lubricating agent; sodium silicate has high thermal stability and can maintain good structure and function at high temperature, the plugging agent can adapt to the environment with high stability, the dispersing agent and the lubricating agent are used for improving the dispersity and fluidity of the plugging agent, the plugging agent is helped to play a role under different operation conditions, and the plugging agent has good application prospects. The plugging agent is prepared by compounding the organic raw materials and the inorganic raw materials, so that the high-temperature-resistant and plugging effects of the plugging agent are enhanced.

The present application relates to a kind of composite organic acid low-temperature calcination lepidolite high-efficiency lithium extraction method.Composite organic acid low-temperature calcination lepidolite high-efficiency lithium extraction method includes the following steps: adding activating agent to lepidolite concentrate, pre-activation treatment, obtain the activated lepidolite concentrate powder;Lepidolite concentrate powder is mixed with composite organic acid calcining agent acidification calcination, obtain the calcination product;Water is added to the calcination product and leaching, suction filtration, obtain the lithium-containing leaching solution;Composite organic acid calcining agent at least includes methyl sulfonic acid.The present application solves the problem that TOT layered structure in lepidolite is difficult to destroy, resulting in low lithium ion extraction efficiency, also solves the problem that Si-O bond in the existing lepidolite crystal framework is difficult to dissociate, resulting in low lithium ion extraction efficiency.

The invention belongs to the technical field of functional composite materials, and particularly relates to high-damping organic silicon-based composite hydrogel as well as a preparation method and application thereof. The method comprises the following steps: mixing polydimethylsiloxane, silicate ester and a polyvinyl alcohol aqueous solution in proportion, and emulsifying in an ultrasonic microreactor to form an oil-in-water emulsion with specific particle size distribution. Wherein after the oil phase in the emulsion is subjected to ultrasonic action, rapid chemical crosslinking is performed to form organic silicon microspheres, and finally the organic silicon-based composite water-based damping material with the damping factor larger than 0.5 is prepared. By regulating and controlling the particle size distribution of the organic silicon microspheres, the stacking density of the microspheres in the damping material is maximized, so that the friction between the microspheres and a gel network is enhanced, and high damping is realized. The elastic composite organic silicon material has good damping performance, molding processability, recoverability and biocompatibility, raw materials are environment-friendly and low in cost, and the elastic composite organic silicon material is suitable for large-scale production and can be widely applied to the fields of flexible wearing, elastic vibration isolation, flexible protection and the like.

The application relates to the technical field of catalysts, and discloses a composite organic acid catalyst for acetate production, a preparation method and application thereof.The composite organic acid catalyst for acetate production comprises silica-supported organic acid; the silica-supported organic acid is silica-supported methyl sulfonic acid and silica-supported alkane disulfonic acid; and the mass ratio of the silica-supported methyl sulfonic acid and the silica-supported alkane disulfonic acid is 1.5:0.4-1.4.Through the technical scheme, the problem that the yield of acetate is not high due to the insufficient catalytic effect of the solid acid catalyst in the prior art is solved.

The invention discloses a compound matrix for ecological restoration of a side slope as well as a preparation method and application of the compound matrix, and belongs to the technical field of geotechnical engineering and ecological restoration. The composite substrate for ecological restoration of the side slope is prepared from the following raw materials in parts by mass: 20 to 40 parts of mining area coal gangue crushed materials, 15 to 30 parts of fly ash, 20 to 35 parts of soil, 8 to 15 parts of organic fertilizer, 0.3 to 1.0 part of water-retaining agent and 1.5 to 4 parts of binder. The high-performance slope ecological restoration material is constructed by taking coal gangue, fly ash and soil in a mining area as main frameworks and compounding an organic fertilizer, a water-retaining agent and an organic-inorganic hybrid gel binder. The method has the core advantages that high-valued resource utilization of industrial solid waste is achieved, the cost of matrix raw materials and dependence on high-quality cultivation soil are remarkably reduced, and the method has both environmental and economic benefits.

The present application relates to the technical field of agricultural liquid fertilizer, and specifically relates to a water-soluble organic suspended silicon liquid fertilizer, which is composed of a silicon source, a compounded organic carrier, a composite dispersion stabilizer, a defoaming agent and water; the compounded organic carrier comprises humic acid and amino acid; the composite dispersion stabilizer comprises sodium lignosulfonate and xanthan gum; the silicon source comprises potassium silicate; the weight of each component is as follows: potassium silicate 6-12 parts, humic acid 3-5 parts, amino acid 2-3 parts, sodium lignosulfonate 0.8-1.5 parts, xanthan gum 0.3-0.5 parts, defoaming agent 0.08-0.12 parts, and water is supplemented to 100 parts. The present application is designed in cooperation with the compounded organic carrier and the composite dispersion stabilizer, the organic carrier and the silicon source form a stable complex structure, the composite dispersion stabilizer inhibits the agglomeration of silicon particles through component cooperation, and a low-temperature aging process is matched, so that the suspension stability of the product is greatly improved.

The application discloses a kind of multi-particle grade iron tailings composite organic matrix and its preparation method and application, belong to the technical field of composite organic matrix, the application uses multi-particle grade tailings (fine tailings, total tailings and fine tailings) Collaborative compound agricultural organic matter, by the gradation optimization of coarse and fine particles, build stable, continuous pore structure, realize the collaborative improvement of aeration and water retention capacity;At the same time, using the adsorption and buffering effect of organic matter, effectively dilute the soluble salt concentration in the matrix, reduce the risk of salt stress, create a suitable environment for plant growth. With the increase of total tailings / fine tailings ratio, the matrix conductivity decreases, the bulk density increases, the aeration porosity improves, and the water holding porosity remains relatively stable, indicating that the ratio of multi-particle grade tailings can improve the physical and chemical properties of the matrix.

The invention discloses an ether amine electrolyte for a magnesium metal negative electrode. The ether amine electrolyte comprises magnesium salt, an ether compound organic solvent and an ether amine compound additive, the preparation method comprises the following steps: dissolving a magnesium salt in an ether compound, stirring and dissolving, adding an ether amine compound, and dissolving and stirring to obtain an ether amine electrolyte; the ether amine electrolyte is applied to the magnesium ion battery. According to the electrolyte, an ether compound is adopted as an organic solvent, magnesium metal and carbonate are prevented from reacting to hinder magnesium ion transmission, meanwhile, an ether amine additive is added to reconstruct a solvation structure, a passivation layer is prevented from being generated, magnesium ions are guided to be evenly deposited, and a solid electrolyte interface film (SEI) rich in Mg3N2 is formed on the surface of magnesium metal; the magnesium ion transmission capability and mechanical strength are enhanced, continuous side reaction of magnesium metal and electrolyte is prevented, the cycling stability of the magnesium ion battery is improved, and the service life of the magnesium ion battery is prolonged; the preparation method is simple, high in operability and suitable for large-scale application.

The invention discloses a composite organic solvent for removing organic sulfur in coke oven gas, which relates to the technical field of desulfurization and comprises an organic sulfur selective absorbent, an active substance and water, the organic sulfur selective absorbent is configured to selectively absorb organic sulfur; the active substance is configured to be capable of accelerating the absorption speed of the organic sulfur selective absorbent on organic sulfur; wherein the weight percentage of the organic sulfur selective absorbent is greater than or equal to 76wt% and less than or equal to 89wt%, and the weight percentage of the active substance is greater than or equal to 1.5 wt% and less than or equal to 2wt%. The invention also discloses an application of the composite organic solvent for removing the organic sulfur in an organic sulfur substance containing CS2. The composite solvent provided by the invention can effectively remove organic sulfur, especially carbon disulfide with higher content, in coke oven gas, the total organic sulfur removal rate can be up to 80% or above, meanwhile, the composite solvent has good selective absorption on inorganic sulfur (hydrogen sulfide), and the composite solvent can be recycled, has no secondary pollutant emission and is high in economic benefit.

The invention discloses a water-soluble solder wire soldering flux and a preparation method thereof. The soldering flux is prepared from the following raw materials: 5.0 to 15.0 percent of a water-soluble organic carboxylic acid anhydride activating agent, 10.0 to 20.0 percent of a water-soluble compound organic carboxylic acid activating agent, 0.2 to 10.0 percent of a water-soluble organic non-metal halide salt activating agent, 0.1 to 5.0 percent of a water-soluble organic halide activating agent, 0.3 to 1.0 percent of a water-soluble nonionic surfactant, 0.5 to 2.0 percent of a water-soluble corrosion inhibitor, 1.0 to 4.0 percent of an antioxidant and the balance of water. And the balance of a water-soluble compound resin carrier. The water-soluble solder wire soldering flux has the advantages that tinning wetting is excellent, splashing is avoided, smoke is extremely low, soldering flux residues are easy to dissolve and clean in water, the soldering flux is easy to solidify and form at the room temperature, and therefore water-soluble solder wires can be stably produced in a high-quality mode, and the preparation method is simple.

The invention belongs to the technical field of metal surface treatment, and discloses a formation agent and a preparation method and application thereof. The formation agent comprises phosphoric acid, nitric acid, zinc dihydrogen phosphate, nickel salt, manganese salt, zinc salt, composite organic acid and a solvent, the composite organic acid comprises citric acid, tartaric acid and pyromellitic acid; the zinc salt does not comprise zinc dihydrogen phosphate. The formation agent is a low-temperature formation agent, a compact protective film layer can be formed on the metal surface under the low-temperature condition such as 15-35 DEG C, and the protective film layer has good corrosion resistance. When the paint film coating is subjected to electrophoresis on the surface of the protective film layer, the protective film layer and the paint film coating have good bonding strength.

The invention discloses a vegetable oil-based high-lubrication environment-friendly cutting fluid and a preparation method thereof, and belongs to the technical field of metal working fluids. The cutting fluid is prepared from the following components in parts by mass: 18-25 parts of compound vegetable oil, 8-15 parts of compound organic acid, 0.3-0.8 part of colloidal graphite, 0.2-0.6 part of boron-molybdenum-rare earth friction modifier, 5-10 parts of amino-acid ester antirust agent, 4-10 parts of pH response type bifunctional vegetable oil amide, 1-2 parts of cosolvent, 10-16 parts of triethanolamine, 1-3 parts of bactericide and the balance of deionized water, wherein the total mass of the cutting fluid is 100 parts. A mercaptobenzothiazole extreme pressure functional group and a carboxyl pH response switch are covalently bonded to a vegetable oleic acid skeleton, so that a single molecule simultaneously has environment sensing and powerful film forming functions. The molecules are stably dispersed in an alkaline environment of the cutting fluid, instantaneous conformation overturning is carried out in a local acid micro-area of a friction interface, extreme pressure groups are exposed and chemically adsorbed with a metal surface, and a dynamic reversible self-repairing lubricating film is formed.

The application discloses a succinimide triptycyl compound organic solvent composite nanofiltration membrane and a preparation method thereof, and belongs to the technical field of separation membranes. The application is characterized in that, polyacrylonitrile or polyimide ultrafiltration membrane is used as a base film, after a surface pore preserving agent is removed, the base film is first soaked in an aqueous solution containing a succinimide triptycyl compound, then is soaked in an organic solution containing a polybasic acid chloride to perform an interfacial polymerization reaction, and finally is dried through heat crosslinking to obtain a composite nanofiltration membrane. The composite nanofiltration membrane prepared by the application has high stability in various polar organic solvents, has good selectivity to organic small molecules, and has high solvent permeability, and has high economic value in separation of organic solvent systems in industry.

The invention belongs to the technical field of grease production through microbial fermentation, and particularly relates to a fermentation production method of grease with high DHA (docosahexaenoic acid) or ARA (arachidonic acid) yield and high sn-2 proportion, which comprises the steps of strain activation, seed culture, basic fermentation inoculation (seed liquid is inoculated according to 8-12% (v / v) inoculum size in logarithmic phase), fermentation and fermentation. And adding compound amino acid compounded by valine, isoleucine and phenylalanine into the basic culture medium, fermenting for 24-48 hours, supplementing ammonia water-compound organic acid to regulate pH and metabolic flux, fermenting for 48 hours, 72 hours and 96 hours, and supplementing tricarboxylic acid cycle precursor substances to realize staged nutrition regulation. According to the method, the yield of DHA or ARA can be increased by 20% or above, the sn-2 site proportion is increased to 50% or above, the cost of the culture medium is reduced by 35% or above, the method is suitable for large-scale production, and high-quality DHA and ARA raw materials are provided for the fields of food, health care products and medicines.

The application discloses a descaling tank cleaning agent and a preparation method and application thereof. The descaling tank cleaning agent comprises inorganic alkali, organic alkali, tackiness remover, spreading agent, oil removal penetrant, stripping agent, swelling disintegrant and composite organic solvent. The descaling tank cleaning agent is environmentally friendly and non-polluting, does not contain ammonia nitrogen, halogen, nitrate, APEO, more than 200 toxic substances in the list of the EU REACH regulation, and passes the RoHS certification.

The invention discloses a method for reducing the content of an M impurity in fusidic acid fermentation liquor. The generation of the M impurity is inhibited from a fermentation source by optimizing a fermentation culture medium and regulating and controlling pH in stages. A fermentation culture medium adopts a composite organic nitrogen source, contains soybean cake powder with specific grease content, and is matched with a yeast extract and corn steep liquor, so that a key precursor can be provided for fusidic acid synthesis, and the enzyme activity can be regulated; the pH is regulated in the early stage of fermentation to adapt to the proliferation requirement of the strain, M impurity synthesis is preliminarily inhibited, the pH is regulated in the middle and later stages to strengthen the activity of a target product synthetase, and M impurity synthetase expression is remarkably inhibited. The process is simple, subsequent complex purification is not needed, the yield of fusidic acid is increased, M impurities are reduced to 2% or below, and the method is suitable for industrial large-scale production.

The invention relates to the technical field of heavy metal eluting agents, in particular to a composite organic acid eluting agent for removing various heavy metals in soil. The composite organic acid eluting agent comprises a basic eluting agent and a composite functional material, the mass ratio of the basic eluting agent to the composite functional material is (500-1000): 1; the basic eluting agent is a first eluting agent, a second eluting agent or a third eluting agent; wherein the first eluting agent is composed of oxalic acid, lactic acid, malic acid, citric acid and succinic acid; the second eluting agent consists of oxalic acid, malic acid, tartaric acid, citric acid and succinic acid; the third eluting agent is composed of phytic acid and oxalic acid; the composite functional material is mesoporous magnetic nano-iron of which the surface is loaded with alkyl polyglucoside and 1-hydroxyethylidene-1, 1-diphosphonic acid; different types of low-molecular-weight organic acids are compounded to obtain the green leaching material capable of efficiently removing heavy metals in the composite polluted soil, and the green leaching material has a relatively high removal rate on Cd, Pb, Cu, Zn and As in the soil.

The cleaning agent comprises the following components in percentage by mass: 10%-20% of organic alkali, 10%-20% of alkali and the balance of water, 10-15% of a dispersant; 8-15% of a surfactant; 2-5% of a corrosion inhibitor; the cleaning agent is used for removing salt residues which are crystallized on the surface of microcrystalline glass and embedded into a microcrystalline structure after molten nitrate is cooled in the ion exchange strengthening process. The cleaning agent is formed by compounding the organic alkali, the dispersing agent, the surface active agent and the corrosion inhibitor, under the scene that salt crystal residues are difficult to remove after reinforcement, efficient removal of the reinforced salt residues can be achieved, and the corrosion and yellowing risks of microcrystalline glass are reduced; when the cleaning agent is used, the cleaning time is short, the cleaning yield is high, and appearance yellowing control and AF film wear resistance indexes can be met after repeated cleaning.

The invention belongs to the technical field of livestock and poultry breeding and feed additives, and particularly relates to a nutrition additive for prolonging the shelf life of eggs and application of the nutrition additive. The nutritional additive for prolonging the shelf life of the eggs consists of the following active ingredients in parts by weight: 5-10 parts of compound organic trace elements, 5-30 parts of in-vivo antioxidant compound substances, 10-30 parts of an intestinal health regulator, 0.1-1 part of organic selenium, 1-5 parts of vitamin E, 3-10 parts of vitamin C, 0.1-2 parts of vitamin K2, 30-60 parts of functional fat powder and 5-30 parts of a carrier. According to the additive disclosed by the invention, through scientific compatibility of specific nutrients and in-vivo biotransformation of laying hens, the deterioration resistance of eggs is fundamentally enhanced. After the additive is used, the shelf life of the eggs stored at normal temperature can be prolonged to more than 5 weeks.