10results about How to "Low pour point" patented technology

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 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.

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.

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.