20results about How to "Low pour point" patented technology

The engine cleaning oil composition disclosed in the present invention is composed of a metal detergent, an ash-free dispersant, a viscosity index agent, a pour point depressant, an antifoaming agent and a base oil. The present invention also discloses a preparation method of the above-mentioned engine cleaning oil composition. The engine cleaning oil composition has a good cleaning effect, can remove most of the impurities in the internal lubrication system of the engine, and disperse and remove carbon deposits, sludge, etc., to restore a cleaner environment inside the engine, and has good compatibility with high-end lubricating oils, and will not affect the performance of new engine oil. The pour point of the composition is not higher than ‑35°C, the flash point is not lower than 200°C, the evaporation loss is not more than 10.0%, and the base value is 5.0-7.0 mgKOH / g.

The invention discloses high-dosage rubber powder modified asphalt and a preparation method thereof, and the rubber powder modified asphalt is prepared by adding 22-30 parts by weight of modified rubber powder into 100 parts by weight of road petroleum asphalt, the modified rubber powder is prepared from the following components in parts by weight: 85 to 95 parts of common rubber powder, 3 to 6 parts of phenolic resin, 0.6 to 1.2 parts of microcrystalline wax, 2 to 5 parts of naphthenic oil, 0.2 to 0.6 part of antioxidant and 0.2 to 0.6 part of EVA (Ethylene Vinyl Acetate). The preparation method comprises the following steps: (1) preparing the modified rubber powder; and (2) preparing the modified asphalt cement. According to the invention, co-melting and blending of the rubber powder and the asphalt are improved, the mixing amount of the rubber powder in the rubber asphalt can be obviously increased, the pavement and durability are greatly improved, the production cost and environmental pollution of the asphalt mixture are effectively reduced, and the asphalt mixture has economic and social double benefits, is simple in preparation process and has relatively high practical application value.

The invention provides a hydrocracking catalyst, which is characterized in that a catalyst I is formed by mixing a Y molecular sieve, alumina and an adhesive to serve as a carrier and is loaded with nickel and tungsten, a catalyst II is formed by mixing a ZSM-5 molecular sieve, alumina and an adhesive to serve as a carrier and is loaded with cobalt and tungsten, and the catalyst I and the catalyst II are mixed to obtain the hydrocracking catalyst. Cobalt and tungsten are loaded on the ZSM-5 molecular sieve, so that the influence of aromatic hydrocarbon on alkane adsorption reaction is reduced, bond breaking and isomerization reaction of alkane are enhanced, the pour point of the transformer oil is remarkably reduced, and the yield of the transformer oil is increased; nickel and tungsten are loaded on the Y molecular sieve, so that the ring-opening cracking reaction of aromatic hydrocarbon is enhanced, the aromatic hydrocarbon content in the transformer oil can be remarkably reduced, and the stability and chromaticity of the transformer oil are improved. The composite catalyst gives consideration to indexes of the aromatic hydrocarbon content and the pour point of the transformer oil, can realize partitioned reinforcement of an aromatic hydrocarbon ring-opening reaction and a paraffin bond-breaking isomerization reaction, and can directly produce a qualified transformer oil product.

The application discloses a production method of base oil, which comprises the following steps: carrying out a hydroisomerization reaction on a lubricating oil base oil raw material under the action of at least one metal phosphide catalyst to obtain base oil, characterized in that the metal phosphide catalyst comprises a metal component and a carrier, the metal phosphide catalyst is subjected to twice modification treatment, the first modification is to introduce a first modification aid alkali metal and / or an acidic compound into the carrier, and the second modification is to introduce a second modification aid polyhydroxy organic compound into the metal component. According to the production method of the base oil, the lubricating oil base oil with low condensation point and low pour point can be produced by taking wax oil as the raw material and carrying out the hydroisomerization reaction on the wax oil by using the metal phosphide catalyst, meanwhile, the lubricating oil base oil produced by the application has low aromatic hydrocarbon content and high total lubricating oil base oil yield.

The application discloses an isomerization and cracking catalyst, which comprises ZSM-48 molecular sieve, amorphous silicon aluminum, alumina and hydrogenation active metal; the application also relates to a preparation method of the catalyst, which comprises the following steps: compounding ZSM-48 molecular sieve, amorphous silicon aluminum and alumina to obtain a carrier, and then impregnating the carrier with hydrogenation active metal. The catalyst can effectively control product distribution, improve the selectivity and yield of target products and reduce the pour point of products in the isomerization and cracking of Fischer-Tropsch synthesis wax.

The present invention relates to the field of catalysts, and discloses a multi-stage hydroisomerization catalyst combination method and a multi-stage hydroisomerization method. The combination method comprises a first hydroisomerization catalyst and a second hydroisomerization catalyst sequentially loaded along a logistics direction, wherein the first hydroisomerization catalyst is loaded in a first hydrogenation reactor, and the second hydroisomerization catalyst is loaded in a second hydrogenation reactor, wherein the first hydroisomerization catalyst and / or the second hydroisomerization catalyst independently comprise a ZSM-48 molecular sieve, wherein the molar ratio of silicon oxide to aluminum oxide in the ZSM-48 molecular sieve is not less than 40, and the specific surface area of ​​the ZSM-48 molecular sieve is not less than 200 m 2 / g, the crystals of the ZSM-48 molecular sieve are ellipsoidal, the major diameter does not exceed 700 nm and the ratio of major diameter to minor diameter is 1-3: 1. The multi-stage hydroisomerization catalyst combination method provided by the present invention helps to improve the efficiency of the catalytic reaction. When the method of the present invention is used to process oil products, the product pour point is lower and the product yield is higher.

The invention relates to the technical field of transformer oil, and provides an additive for reducing the pour point of plant-based transformer oil and a preparation method thereof.The additive is prepared from an alcoholysis modified copolymer, an alpha-olefin copolymer, a turmeric rhizome extract and a low-molecular-weight ester viscosity modifier, wherein the alcoholysis modified copolymer is obtained by modifying a norbornic anhydride-methyl tetradecyl ester copolymer with octadecanol; the norbornene anhydride-methyl tetradecyl ester copolymer is a copolymer obtained by reacting norbornene anhydride and tetradecyl methacrylate; the alpha-olefin copolymer is a copolymer obtained by reacting alpha-pinene and dodecene. In the additive disclosed by the invention, the alcoholysis modified copolymer inhibits wax crystal aggregation, the alpha-olefin copolymer optimizes the viscosity-temperature characteristic of an oil product, the turmeric rhizome extract enhances oxidation resistance, the low-molecular-weight ester viscosity modifier improves dispersity and flowability, and the pour point and viscosity of the plant-based transformer oil can be remarkably reduced under the synergistic effect of multiple components; the low-temperature fluidity and the comprehensive performance are improved.

The present application relates to a kind of methods for extracting oil and rubber oil dewaxing, it is characterized in that using the composite solvent of polar solvent and solubilizer is dewaxing solvent, polar solvent uses N-methyl pyrrolidone, solubilizer is the mixture of one, two or three of benzene, toluene, xylene, above wax precipitation temperature, the composite solvent is mixed with extracting oil or rubber oil, then crystallization is cooled, filtration is obtained wax cream and filtrate, wax cream and filtrate are respectively heated and evaporated to recover solvent and obtain wax and dewaxed oil.

The application relates to the technical field of insulating oil, in particular to insulating oil, a preparation method and application thereof, which comprises the following components by mass fraction: base vegetable oil: 85-95 parts; comb-shaped polymer modified inorganic nano-particles: 1-2 parts; organic acid modified nano-cellulose: 1-2 parts; antioxidant: 0.1-0.5 parts. The prepared insulating oil has a low pour point and viscosity, and the viscosity retention rate is high after being placed for 180 days, and the insulating oil also has unique advantages in the insulating field, and the application range of the plant insulating oil in high-cold regions is greatly expanded.

The invention discloses high-performance insulating oil and a preparation method thereof, and belongs to the technical field of preparation of electric insulating materials, and the preparation method comprises the following steps: purifying and drying oleic acid to obtain purified oleic acid; uniformly mixing the purified oleic acid with a reaction aid to obtain an oleic acid mixed solution; the method comprises the following steps: carrying out laser induction on an oleic acid mixed solution by using nitrogen ions to vibrate oleic acid molecules to form isoheptadecanoic acid with different molecular structures, and after a reaction system is cooled, removing a reaction auxiliary agent in the isoheptadecanoic acid mixed solution to obtain pure isoheptadecanoic acid; isoheptadecanoic acid and trimethylolpropane (TMP) are subjected to an esterification reaction, and a reaction product is purified to obtain the synthetic ester insulating oil. The synthetic ester insulating oil prepared by the invention has the advantages of low viscosity, low pour point, high ignition point (greater than 300 DEG C) and high oxidation stability, and meets the application requirements of electrical equipment such as transformers and the like in extreme environments.

A method for preparing low-pour-point, high-aromatic, environmentally friendly rubber oil by a combination of extraction and dewaxing is characterized by the use of three solvents: the main extraction solvent (hereinafter referred to as the main solvent) is N-methylpyrrolidone, the secondary extraction solvent is C7-C12 alkanes, and the solubilizer is one or a mixture of two or three of benzene, toluene, and xylene; the extracted oil is used as the feed oil, and the extraction process is carried out using an extraction tower. The main extraction solvent enters the upper part of the extraction tower, the feed oil enters the middle and lower parts, and the secondary solvent enters the lower part; the material at the bottom of the extraction tower is recovered by solvent to obtain secondary extracted oil; the material flowing out from the top of the extraction tower is mixed with the pumped solubilizer and part of the main solvent in a static mixer and then cooled to -15 to 10°C in a cooler, and then filtered to obtain wax paste and filtrate; the wax paste is heated and evaporated to recover the solvent to obtain wax; the filtrate is heated and evaporated to recover the solvent to obtain dewaxed oil, i.e., low-pour-point, high-aromatic, environmentally friendly rubber oil.

The invention relates to a method for preparing coal-based mPAO and the prepared mPAO.The method comprises the steps that 1, coal-based Fischer-Tropsch synthesis light oil containing C5-C9 fractions is subjected to first fraction cutting and first deoxidation treatment, and 1-nonene is obtained; the coal-based Fischer-Tropsch synthesis heavy oil containing the C10-C18 fractions is subjected to second fraction cutting and second deoxidation treatment, and 1-tridecene is obtained; and (2) in an inert atmosphere, in the presence of a metallocene catalyst and an auxiliary agent, contacting the 1-nonene with the 1-tridecene, and carrying out a polymerization reaction. The method disclosed by the invention is mild in condition, the application field of the olefin raw material of the coal-based Fischer-Tropsch synthetic oil can be widened, the use efficiency of odd-carbon alpha-olefin is improved, and the prepared mPAO is high in viscosity, high in VI value and low in pour point.

The invention provides a composite hydrocracking catalyst, which is prepared by mixing a ZSM-5 molecular sieve and alumina-loaded nickel and molybdenum as a catalyst I and a Beta molecular sieve and alumina-loaded cobalt and molybdenum as a catalyst II. According to the present invention, the indexes of the aromatic hydrocarbon content and the pour point of the transformer oil can be considered, and the aromatic hydrocarbon ring-opening reaction and the alkane bond-breaking isomerization reaction can be subjected to the partition strengthening so as to reduce the aromatic hydrocarbon content and the pour point in the hydrocracking diesel oil, such that the qualified transformer oil product can be directly produced by using the conventional hydrocracking means.

This invention provides a method for producing lubricating oil base oil from heavy feedstock and the resulting lubricating oil base oil. The method includes: cutting the heavy feedstock to obtain a light component, a middle fraction, and a bottom wax; wherein the boiling point ranges of the light component, the middle fraction, and the bottom wax are 170-300℃, 300-500℃, and >500℃, respectively; subjecting the bottom wax to a first isomerization reaction under the catalysis of a first isomerization catalyst to obtain a first isomerization product; subjecting the first isomerization product and the middle fraction to a second isomerization reaction under the catalysis of a second isomerization catalyst to obtain a second isomerization product; subjecting the second isomerization product to hydrorefining; and then fractionating the obtained refined product to obtain the lubricating oil base oil. The lubricating oil base oil produced by this method has high yield, low pour point, low cloud point, and high viscosity index, making it a high-quality lubricating oil base oil.

The invention relates to the technical field of coal chemical industry, and discloses a method for preparing lubricant base oil from Fischer-Tropsch hydrogenation tail oil. The method comprises the following steps: carrying out a first-stage reaction, a second-stage reaction and a third-stage reaction on the Fischer-Tropsch hydrogenation tail oil and hydrogen in sequence, and rectifying the reacted material, the first-stage reaction is carried out in the presence of a first hydroisomerization catalyst, and the second-stage reaction is carried out in the presence of a second hydroisomerization catalyst; the total acid amount of the first hydroisomerization catalyst is larger than that of the second hydroisomerization catalyst, and the specific surface area and pore volume of the first hydroisomerization catalyst are smaller than those of the second hydroisomerization catalyst; the temperature of the first-stage reaction is less than or equal to the temperature of the second-stage reaction, and the hydrogen partial pressure of the first-stage reaction is less than or equal to the hydrogen partial pressure of the second-stage reaction. According to the method, the Fischer-Tropsch hydrogenation tail oil full fraction can be applied, and it can be guaranteed that the prepared lubricating oil base oil has excellent quality.

The invention discloses pentaerythritol tetra (6-naphthyl hexanoic acid) ester and a preparation method and application thereof, the preparation method adopts two-step reaction of alkylation and esterification, the first step is that naphthalene and 5-hexenoic acid are subjected to alkylation reaction to generate 6-(1-naphthyl) hexanoic acid; and 2, carrying out a reaction on the 6-(1-naphthyl) hexanoic acid and thionyl chloride, and carrying out an esterification reaction with pentaerythritol to finally obtain the oily pentaerythritol tetra (6-naphthyl hexanoic acid) ester. The prepared pentaerythritol tetra (6-naphthyl hexanoate) ester has a structure with a symmetric four-arm core, a flexible alkyl chain and a rigid naphthalene end group, is shown as a formula (I), is used for lubrication and sealing of various equipment, and has the advantages of oxidation resistance, high and low temperature resistance, extreme pressure resistance, good lubrication and sealing performance and the like.

This invention belongs to the field of lubricating oil technology and discloses a method for synthesizing isopropylnaphthalene and its application. The method for synthesizing isopropylnaphthalene includes reacting a naphthalene source and an alkylating agent under an inert atmosphere and in the presence of a composite catalyst to obtain isopropylnaphthalene; the composite catalyst is a molecular sieve and SO4 supported on the molecular sieve. 2‑ Based on the mass of the composite catalyst being 100%, the SO4 2‑ The mass fraction is 2% to 11%; the composite catalyst of the present invention uses SO4 2‑ Loaded on a molecular sieve support, on the one hand, SO4 2‑ The combination of the superacid properties and the high specific surface area and certain pore structure of the molecular sieve can provide more acidic sites. The resulting composite catalyst exhibits high reaction conversion rate and selectivity for diisopropylnaphthalene in the naphthalene / 2-isopropylnaphthalene and propylene isopropylation reactions.

The invention belongs to the field of organic synthesis, and particularly relates to a preparation method of an alkaline earth metal catalyst, which comprises the following steps: (S1) carrying out first reaction on iso-tridecanol and anhydride to obtain a first reactant; (S2) carrying out second reaction on alkaline earth metal hydroxide and the first reactant to obtain a second reactant; (S3) carrying out third reaction on inorganic acid and the second reactant to obtain a third reactant; and (S4) carrying out dehydration treatment on the third reactant. The invention also relates to a method for preparing the iso-tridecanol polyoxyethylene ether, which comprises the following step of: reacting iso-tridecanol and ethylene oxide in the presence of the alkaline earth metal catalyst in a non-reactive gas environment to prepare the iso-tridecanol polyoxyethylene ether. The iso-tridecanol polyoxyethylene ether prepared by the preparation method disclosed by the invention is relatively low in polymer dispersity index, relatively low in pour point and excellent in appearance.

The invention discloses an energy storage battery cooling liquid composition and a preparation method thereof, a mineral type cooling liquid is prepared from base oil and an antioxidant, a light stabilizer and an anti-foaming agent which are added, the mineral type cooling liquid has a high flash point and good low-temperature fluidity, the cooling performance is effectively improved, and meanwhile, the energy storage battery cooling liquid composition has a good application prospect. In addition, the cooling liquid also has good insulativity, biodegradability and chemical stability, is low in biotoxicity, and can be suitable for immersed direct cooling of an electrochemical energy storage system.

The invention provides an n-alkane hydroisomerization catalyst and a preparation method thereof, a composition containing the n-alkane hydroisomerization catalyst and application of the n-alkane hydroisomerization catalyst, and the n-alkane hydroisomerization catalyst is prepared by the following steps: mixing a metal mixed solution containing a modified metal precursor and an active metal precursor with a carrier, heating according to a program, and carrying out equivalent-volume vacuum impregnation and modification to obtain a catalyst precursor; the catalyst precursor is subjected to homogenization treatment and roasting in sequence, and the catalyst is obtained. The modified metal comprises first modified metal and second modified metal, the first modified metal comprises one or more of alkali metal, alkaline earth metal and first transition metal, and the second modified metal comprises one or more of IIIA group metal and IVA group metal; the active metal comprises a group VIII metal. The n-alkane hydroisomerization catalyst composition comprises two or three n-alkane hydroisomerization catalysts. The composition has higher isoselectivity and target product yield, better pour point depression and cloud point depression effects and better raw material adaptability.