32 results about "Fatty acid methyl ester" patented technology

This invention relates to an alcohol-based fuel additive, its preparation method, and its application, belonging to the technical field of diesel fuel additives. The additive, by weight, comprises: a mixture of C3-C10 fatty alcohols, fatty acid methyl esters, methyl tert-butyl ether, isoamyl nitrate, dimethyl carbonate, and diesel fuel. The mass ratio of methyl tert-butyl ether to dimethyl carbonate is [value missing]. This invention employs a stepped feeding process, solving the problem of combustion improver failure caused by high shear heat generation by cooling the fuel before adding isoamyl nitrate, and ensuring long-term fuel stability at -10°C using a specific polarity gradient ratio. The fuel prepared by this invention has a high cetane number, strong power, and good anti-stratification effect, making it suitable for compression ignition engines.

This invention relates to the field of coal washing and beneficiation technology, and discloses a method for preparing a nano-flotation reagent for coarse coal slime. The method involves mixing sulfonated fatty acid methyl ester with kerosene and n-octanol to form an oil phase, then further mixing this with an aqueous phase containing a nonionic emulsifier, and adding functionalized nano-silica to obtain a mixed solution. This mixed solution is then sequentially treated by ultrasonic dispersion, high-speed stirring, and micro-electrolysis to generate nano / microbubbles in situ and maintain their uniform distribution, resulting in a nano-microemulsion. This invention can significantly improve the adhesion efficiency and loading capacity of coarse coal surfaces, effectively suppress tailings runoff, and improve the transportation and collection efficiency of coarse coal. It solves the problems of low clean coal yield and tailings runoff caused by the low adsorption efficiency and poor foam stability of traditional flotation reagents for coarse coal.

This invention belongs to the field of drilling engineering technology, specifically relating to a nanofiber-reinforced foam system for foam drilling fluid and its preparation method. The nanofiber-reinforced foam system for foam drilling fluid includes a gas phase and a liquid phase. The liquid phase comprises the following raw material components by mass percentage: 0.3-0.8 wt% foaming agent, 0.3-1.0 wt% nanofibers, and the balance being water. The foaming agent is prepared by in-situ polymerization of sodium isomeric tridecyl alcohol polyoxyethylene ether carboxylate and fatty acid methyl ester ethoxylate, followed by the introduction of hydrophilic monomers and crosslinking agents, using ammonium persulfate as an initiator. This invention's system exhibits high temperature and high salinity resistance, strong foam stability, and solves the problems of poor stability, insufficient temperature and salt resistance, high cost, and poor environmental performance of existing foam drilling fluids, achieving intelligent matching of foam performance with formation conditions.

This invention discloses an aging-resistant glass fiber for sheet materials and its preparation method, relating to the field of polymer materials technology. The preparation method of the aging-resistant glass fiber for sheet materials includes the following processes: uniformly grinding glass raw materials into powder, melting, drawing into fibers, coating with a reinforcing sizing agent, cooling, and winding to obtain glass fibers. This invention modifies palm oil through alkali-catalyzed transesterification, replacing the glycerol ester groups in palm oil to form single-chain fatty acid methyl esters, reducing branching, lowering the viscosity and molecular weight of palm oil, allowing it to be more uniformly dispersed in the glass fibers, and enhancing the glass fibers' resistance to atmospheric moisture erosion; it also modifies the silane coupling agent to contain both vinyl and amino groups in its structure, enhancing the bonding strength between the glass fibers and the reinforcing sizing agent, further improving the weather resistance, mechanical strength, and high-temperature resistance of the glass fibers.

The application provides a high-efficiency detergent and a preparation method thereof, and relates to the technical field of daily chemical products.The detergent comprises microencapsulated composite enzymes, chelating agents, surfactants, additives and water; the active ingredients of the microencapsulated composite enzymes are composed of lipase, protease and amylase, and are prepared by sodium alginate-chitosan microencapsulation embedding, so that the enzyme activity is effectively protected, the stability of the enzymes in the detergent system is improved, and the targeted decomposition of composite stains is realized; the chelating agents are composed of tetrasodium iminodisuccinate and maleic acid-acrylic acid copolymer sodium salt, and can synergistically improve the hard water resistance and the stain removal efficiency; the surfactants are composed of sodium fatty acid methyl ester sulfonate, alkyl polyglycoside and cocamide propyl betaine, and have strong emulsifying and stain removing power and mildness.The detergent is suitable for cleaning tableware and fruits and vegetables, and has the characteristics of high stability, strong stain removing power, easy rinsing, mildness and environmental protection.

To provide a manufacturing facility that can be implemented on an industrial scale and continuously produce fatty acid methyl esters with a low acid value, and to provide a method for producing fatty acid methyl esters using such a manufacturing facility. [Solution] A fatty acid methyl ester production facility comprising a first raw material tank for containing fatty acids, a second raw material tank for containing methanol, a reaction tower with a first raw material supply line connected to the first raw material tank at the top and a second raw material supply line connected to the second raw material tank at the bottom, and a removal line for removing the product from the reaction tower. The reaction tower is a bubble tower with 49 reaction stages. A first heat exchanger is provided for heat exchange between the first raw material supply line and the removal line.

To provide a manufacturing facility that suppresses the generation of by-products and can stably produce fatty acid methyl esters on an industrial scale, and a method for producing fatty acid methyl esters using such a facility. [Solution] A manufacturing facility comprising a first static mixer connected to a raw material introduction pipe, a first reaction unit connected downstream thereof, a first separator connected downstream thereto, a second static mixer connected downstream thereto, a second reaction unit connected downstream thereto, and a second separator connected downstream thereto. Each of the first and second reaction units is a tubular reactor satisfying that the reaction section piping length (L) relative to the pipe diameter (p) is L ≥ p × 8,000, and consists of a plurality of straight pipes and curved pipes connecting the straight pipes. The curved pipes include a first curved pipe and a second curved pipe having a curvature radius smaller than that of the first curved pipe. The plurality of straight pipes and the first curved pipe are arranged horizontally, and the second curved pipe is arranged horizontally and vertically.

The present application relates to a kind of aluminum alloy cleaning agent and its preparation method and application, aluminum alloy cleaning agent includes by weight percentage: chelating agent 0.1-0.5%, surfactant 4-8%, cleaning additive 6-12%, monobasic acid 5-10%, solubilizing agent 3-5%, the rest is water;Its advantages are that, using different surfactant fatty acid methyl ester ethoxylate and C9-11 ethoxylated alcohol: coconut alkyl quaternary amine ethoxylate mixture compound use, give consideration to wetting, emulsification, oil removal etc., not only clean thoroughly to the oil dirt on the surface of aluminum alloy, and the cleaning agent of the present application does not add aluminum corrosion inhibitor, strong alkali additive, does not contain phosphorus and silicon, friendly to environment, no corrosion to aluminum alloy, no residue, will not affect the performance of aluminum alloy, reduce the harm to human body, and wastewater treatment pressure, in the application of cleaning oil dirt on the surface of aluminum alloy and improving the service life of aluminum alloy cleaning agent has important value.

This invention relates to a biomimetic adhesive modified rubber asphalt and its preparation method, comprising the following steps: heating and melting base asphalt, adding rubber powder under stirring conditions to obtain a first rubber powder asphalt blend; subjecting the first rubber powder asphalt blend to a first shear treatment to obtain a second rubber powder asphalt blend; adding a biomimetic adhesive polymer to the second rubber powder asphalt blend, subjecting it to a second shear treatment to obtain a third blend; adding methyl epoxide fatty acid ester to the third blend, stirring evenly, and then subjecting it to a constant-temperature swelling and development treatment to obtain modified rubber asphalt. This invention uses a biomimetic adhesive polymer and methyl epoxide fatty acid ester as additives to improve rubber asphalt. The resulting modified rubber asphalt can balance high-temperature stability and low-temperature crack resistance; it has moderate viscosity, improving its workability; and it can alleviate the phase separation behavior of rubber asphalt, thereby improving its storage stability.

The present invention relates to the technical field of adhesives, and in particular relates to a clean-panel adhesive and a preparation method therefor. The clean-panel adhesive comprises a main agent and a curing agent. The main agent at least comprises, in parts by weight, the raw preparation materials of 40-60 parts of a hydroxyl compound, 4-9 parts of an ester plasticizer, 30-50 parts of a filler and 2-4 parts of an auxiliary agent. The hydroxyl compound at least comprises castor oil, a polyether polyol and a low‑molecular‑weight polyol. The hydroxyl value of the polyether polyol is 300 to 400 mgKOH / g and the low‑molecular‑weight polyol is propylene glycol. The mass ratio of the low‑molecular‑weight polyol to the ester plasticizer is (0.5-1.5):(4-6); the ester plasticizer is a fatty acid methyl ester. The adhesive has a relatively long pot life and open time under high-temperature conditions (35°C or more) in summer, meets bonding and processing requirements for a face material and a core material in a clean panel, and has a high market application value.

The application belongs to the technical field of cables, and relates to a corrosion-resistant and wear-resistant control cable as well as a preparation method and application thereof. The corrosion-resistant and wear-resistant control cable comprises, from inside to outside, a conductor, an insulation layer, a shielding layer, an inner sheath layer and a composite outer sheath layer. The composite outer sheath layer comprises a base layer and a functional modified filler dispersed in the base layer. The functional modified filler is a composite particle of a hydroxyl modified diatomite loaded with a composite corrosion inhibitor. The hydroxyl modified diatomite is diatomite modified and treated with phytic acid and silane coupling agent KH-560 in sequence. The composite corrosion inhibitor comprises a complex of molybdate, benzotriazole and fatty acid methyl ester polyoxyethylene ether. The corrosion-resistant and wear-resistant control cable can improve the corrosion resistance, wear resistance and tensile strength of the control cable under complex working conditions.

The application discloses a plant oil source polymer material with a shape memory function and a preparation method and application thereof, and relates to the technical field of polymer materials, and in particular to a plant oil source polymer material with a shape memory function, a preparation method and application thereof. The plant oil source polymer material with the shape memory function is prepared by the following steps: an intermediate A is obtained by ring-opening addition and amidation reaction of an epoxy fatty acid methyl ester and a polyamine; then the prepared intermediate A is reacted with furfural to obtain a plant oil source Schiff base; in a 1,4-dioxane solvent, tung oil and 4,4'-bismaleimide diphenylmethane are added in a certain proportion, and the two are subjected to Diels-Alder reaction to obtain a tung oil source maleimide solution; the plant oil source Schiff base and an epoxy resin are added in different proportions in the tung oil source maleimide solution, and curing is carried out in an oven to obtain the plant oil source polymer material with the shape memory function.

This facility for producing an unsaturated alcohol includes: a first fatty acid methyl ester production facility which is provided with a tubular reactor; a second fatty acid methyl ester production facility which is provided with a bubble cap tower provided with a plurality of reaction stages; and a reduction reaction facility for bringing the fatty acid methyl ester into contact with hydrogen to obtain an unsaturated alcohol. The first fatty acid methyl ester production facility can produce an unsaturated fatty acid methyl ester using an oil / fat as a raw material. The second fatty acid methyl ester production facility can produce an unsaturated fatty acid methyl ester using a fatty acid as a raw material.

A method for determining the contents of linoleic acid and α-linolenic acid in a fat emulsion injection. The method comprises: demulsifying a fat emulsion, subjecting fatty acids to methyl esterification, separating methyl ester compounds of linoleic acid and α-linolenic acid by using gas chromatography, and performing quantitative calculation to obtain the contents of linoleic acid and α-linolenic acid. By means of demulsifying the fat emulsion and subjecting linoleic acid and α-linolenic acid to methyl esterification, followed by separation of the resulting methyl ester compounds, the contents of linoleic acid and α-linolenic acid in the fat emulsion can be accurately and rapidly determined. Moreover, the method involves a simple pretreatment process and high precision, realizing an efficient, rapid and accurate method for detecting the contents of linoleic acid and α-linolenic acid in a fat emulsion injection.

This invention provides an environmentally friendly ink for high-speed offset printing machines and its preparation method, relating to the field of inks. The environmentally friendly ink for high-speed offset printing machines comprises the following raw materials in parts by weight: 55-65 parts of conjugated copolymerized gum oil, 8-12 parts of high-boiling-point alkane solvent, 3-5 parts of soybean oil fatty acid methyl ester, 15-18 parts of pigment, 2-3.5 parts of silane-modified hollow ceramic microspheres, 3-5 parts of hydrophobically treated porous nano-silica, 0.5-1 part of polyethylene micro-powder wax, 0.3-0.6 parts of dispersant, and 0.1-0.3 parts of defoamer. This invention provides an environmentally friendly ink for high-speed offset printing machines and its preparation method, improving ink transfer rate and stability, and achieving stable and consistent printing quality.

The application belongs to the technical field of biofuel preparation, and specifically discloses a method for in-situ generation of aromatic hydrocarbons by oil and fat hydrogenation deoxygenation. The method uses a composite catalyst composed of NiMgO3 / C-R and Ni / HZSM-5, and oil and fat raw materials and the composite catalyst are added into a reaction kettle in different mass ratios. Under certain temperature and pressure conditions, aromatic hydrocarbons are generated in-situ in the hydrogenation deoxygenation process through the synergistic effect of the double catalysts. The method solves the technical defects of the traditional hydrogenation treatment ester and fatty acid process, which can only generate alkanes and lacks aromatic hydrocarbons. The preparation method does not need to additionally add an aromatic hydrocarbon synthesis unit, and can generate biofuel rich in aromatic hydrocarbons in a single reaction process. The content of aromatic hydrocarbons in the product can reach 16.82% to 25.12%, which significantly improves the density, thermal stability and energy density of the biofuel. The method is suitable for various oil and fat raw materials such as fatty acid methyl ester and soybean oil, and the conversion rates of various raw materials are all over 96%. The process is simple and efficient, and is suitable for the industrialized production of high-end biofuels such as bioaviation kerosene.

This invention discloses a process for extracting oils from furfural wastewater to prepare bio-aviation fuel feedstock, applicable to the high-value recovery of trace oils from the primary distillation column wastewater during furfural production. The process includes steps such as feedstock hydrolysis, gas condensation, cooling and stratification of the wastewater oils at the bottom of the column, secondary air flotation oil extraction, isothermal thermal devolvation for impurity removal, microfiltration, saponification reaction, alcohol extraction, and vacuum distillation. By constructing a four-stage synergistic removal mechanism of thermal devolvation + saponification phase separation + alcohol extraction + vacuum distillation, unsaponifiable matter, insoluble substances, and water in the oils are effectively separated to obtain high-purity fatty acid methyl ester products, which can be directly used as bio-aviation fuel feedstock. This method is mild, energy-efficient, non-toxic, and environmentally friendly, avoiding secondary pollution caused by traditional extraction processes. It is both economical and practical, effectively extending the operating cycle of the wastewater evaporator, improving system stability and economic value, and providing a new path for the resource utilization of furfural wastewater.

The application relates to a seed treatment composition and a preparation method and application thereof, which comprises, taking the total mass of the composition as 100%, 0.3-0.8% of gamma-aminobutyric acid, 1-3% of N-acyl glutamate, 0.5-2.5% of a betaine surfactant, 0.5-2.5% of a water-retaining agent, 0.2-1% of a fatty acid methyl ester sulfonate, 0.5-2.5% of a carboxymethyl cellulose salt, 1-40% of a pesticide, 1-5% of a dispersing agent and the balance of water; wherein the preparation method of the water-retaining agent comprises the following steps: S1, dissolving a cationic polysaccharide in an acidic aqueous solution to form a polysaccharide solution; S2, mixing a non-reducing disaccharide with the polysaccharide solution to form a uniform mixed solution; and S3, freeze-drying the mixed solution to obtain the water-retaining agent. The seed treatment composition provided by the application has good water-retaining performance, comprehensive stress resistance and good compatibility with a seed coating agent system.

The application discloses a method for preparing fatty acid methyl ester from olefins and / or alcohols, and belongs to the field of catalytic chemistry. Raw materials containing olefins and / or alcohols and carbon monoxide and raw materials containing methanol are reacted through a reactor loaded with a solid acid catalyst to obtain fatty acid methyl ester; the solid acid catalyst is an acidic molecular sieve. The application provides a new method for preparing fatty acid methyl ester by carbonylating olefins and alcohols under the catalysis of a solid acid. The method for preparing fatty acid methyl ester in the application does not need a noble metal catalyst, the reaction raw materials do not contain water, the system has small corrosion, the product is easy to separate, the discharge of three wastes is small, the fixed bed process engineering is easy, and the method is suitable for single-set large-scale production.

This invention relates to the field of oil and gas field chemical agent preparation technology, and particularly to a composite surfactant for dispersing sulfur particles and its preparation method. The composite surfactant of this invention comprises the following components in parts by weight: 3-9 parts of fatty alcohol polyoxyethylene ether sulfate salt, 3-9 parts of sodium fatty acid methyl ester sulfonate, 5-11 parts of polyalkyltrimethylammonium chloride, 4-10 parts of polyalkyltrimethylammonium bromide, 6-13 parts of polyalkyldimethyl betaine, 14-28 parts of inorganic base, and 20-65 parts of solvent. The composite surfactant of this invention exhibits good dispersion effect on sulfur particles, has low toxicity, poses minimal harm to human health, possesses certain degradability, and is environmentally friendly.

The application provides a kind of bio-based emulsified oil and its preparation method and application, the components of the bio-based emulsified oil include: 2-10 parts of vegetable oil, 5-15 parts of sodium fatty acid methyl ester sulfonate, 5-15 parts of sodium oleate and 5-20 parts of non-ionic surfactant by weight, using the bio-based emulsified oil can improve the grinding efficiency of water-based color paste, so that the color, gloss and other aspects of index are improved;It has long-acting defoaming effect, is suitable for being used in water-based ink with environmental protection requirement, also has the advantages of low odor, non-toxic, can be stored safely, is not easy to deteriorate and demulsification.

This application provides a low-temperature cold-repair asphalt mixture and its preparation method, which is composed of elastically modified asphalt, composite aggregate, epoxy fatty acid methyl ester, antioxidant, cyclopentadiene, and fumed silica. Based on the total mass of the composite aggregate, the composite aggregate consists of diabase, basalt, limestone manufactured sand, high-energy activated rice husk ash, and composite fibers. This application introduces high-energy activated rice husk ash into the composite aggregate and modifies its interface, thereby introducing a three-dimensional network structure into the asphalt mixture, thus improving the low-temperature performance of the mixture, reducing the compaction difficulty, and enhancing the interfacial bonding performance between the components. After construction, the asphalt mixture can effectively improve the repair effect of the road surface and meet the repair needs of heavy-load roads. This application can effectively improve the emergency response capability of roads and has the advantages of scientific formulation, simple preparation process, low implementation cost, wide applicability, and ease of promotion and implementation.

The present application relates to the technical field of oil refining, in particular to a kind of edible waste oil recovery process. Including the following steps: edible waste oil heating, centrifugation, dehydration, deslagging;Preparation of magnetic phase transfer catalyst;Preparation of amino acid ionic liquid as green catalyst and waste oil recovery treatment of finishing waste oil. The amino acid ionic liquid prepared by 1-butyl-3-methyl imidazole hydroxide and alanine as raw material in the biodiesel transesterification reaction, the ionic liquid can greatly promote the two-phase interface mass transfer that homogeneous reaction is difficult to occur, thereby high-efficiency catalysis transesterification reaction generates fatty acid methyl ester, i.e. biodiesel and glycerol;After reaction, by virtue of its non-volatility and immiscibility with product, separation from reaction system can be achieved by standing stratification or simple centrifugation, thereby achieving the effect of improving the content of effective component in biodiesel, i.e. fatty acid methyl ester, and reducing impurities.

The present application belongs to the field of catalytic chemistry. Disclosed is a method for preparing a fatty acid methyl ester from an olefin and / or an alcohol. A raw material containing an olefin and / or an alcohol and carbon monoxide reacts with a raw material containing methanol by means of a reactor loaded with a solid acid catalyst, so as to obtain a fatty acid methyl ester, wherein the solid acid catalyst is an acidic molecular sieve. The present application provides a new method for preparing a fatty acid methyl ester by means of the carbonylation of an olefin and an alcohol thereof that is catalyzed by a solid acid. The method for preparing a fatty acid methyl ester in the present application does not require any noble metal catalyst, the reaction raw materials therefor do not contain water, the system has low corrosiveness, the product is easy to separate, the emission of three wastes is low, the fixed-bed process is easy to industrialize, and the method is suitable for single-set large-scale production.

The application provides a double-hydroxy vitamin D metabolite pretreatment kit and a sample pretreatment method, and belongs to the technical field of in vitro diagnostic reagents. The double-hydroxy vitamin D metabolite pretreatment kit provided by the application comprises a magnetic bead working solution, the magnetic bead working solution comprises hydrophilic-lipophilic balance magnetic beads with a surface modified benzofuran ring system; a sample processing solution, the sample processing solution is a zinc sulfate heptahydrate solution; a leaching solution, the leaching solution is a solution containing fatty acid methyl ester ethoxylate and acetic acid; an eluent, the eluent is an acetonitrile-isopropyl alcohol mixed solution containing 2,6-di-tert-butyl-p-cresol; and a sample diluent, the sample diluent is a solution containing acetic acid. The kit provided by the application has the advantages of good stability, low detection limit and simultaneous detection of multiple target objects.

The application relates to the technical field of high-voltage insulation materials, and particularly discloses a self-repairing nano-capsule hybrid cottonseed insulating oil and a preparation method thereof. The insulating oil comprises a cottonseed oil carrier, and 0.5-3wt% of microcapsules are dispersed in the carrier. The core layer of the microcapsules is composed of boron nitride nanosheets and epoxy fatty acid methyl ester, and the shell layer is a polyurethane-silicon dioxide hybrid material. The microcapsules are prepared by an electrostatic spraying-sol-gel method and are uniformly dispersed in the cottonseed oil-based insulating oil. When thermal pressure is generated by local discharge, the microcapsules are broken to release active substances, BNNS are directionally migrated to the discharge defect to form a conductive network to shunt energy, and the epoxy ester is in-situ polymerized under the induction of an electric field to fill microcracks. The application breaks through the limitation of traditional physical adsorption, realizes intelligent sensing-repairing integration, and has high repairing efficiency.

The application discloses an efficient flotation method for oxidized coal slime and belongs to the technical field of coal washing and processing. A composite collecting agent is prepared from polyethylene glycol octylphenyl ether and diesel oil, and fatty acid methyl ester is added as a synergistic agent; the mass fraction of the polyethylene glycol octylphenyl ether in the composite collecting agent is 6-10 parts, the mass fraction of the diesel oil is 0-4 parts, the adding amount of the composite collecting agent in the coal sample is 200-1200 g / t, and the adding amount of the fatty acid methyl ester is 20-100 g / t. Through the synergistic effect between the composite collecting agent and the synergistic agent, the hydrophobicity of the surface of the oxidized coal is significantly enhanced, the adsorption amount and the uniformity of the collecting agent on the surface of the coal particles are improved, the problem of low flotation efficiency caused by the high hydrophilicity of the surface due to the high content of oxygen-containing functional groups is effectively overcome, the reagent system constructed by the application has the characteristics of simple formula, wide source, non-irritating odor, environmental friendliness and easy implementation, the clean coal yield can be further improved, the ash content can be effectively controlled, and the application has significant industrial application value.