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Synthetic method for high-grade lubricating oil PAO22 used for automobile engine

A technology of automobile engine and synthesis method, which is applied in the directions of lubricating composition, petroleum industry, base material, etc., can solve the problems of high risk factor of catalyst, low safety factor, high price, etc. Effect

Inactive Publication Date: 2017-08-22
SHANGHAI OULEIFEN BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the existing high-viscosity PAO base oil preparation methods often use long carbon chain α-olefin monomers to synthesize PAO base oils with different viscosities under the action of catalysts. Currently, metallocenes are used as catalysts for synthesizing PAO base oils, which is expensive. Not conducive to production, the existing BF 3 、TiCl 4 As a catalyst for PAO base oil, although it can meet the viscosity requirement, the risk factor of using this catalyst is high
In addition, the existing methods for preparing PAO base oil all require pressurized reaction, which has a low safety factor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Put 6500g of 1-decene monomer, 150g of aluminum trichloride and 50g of acetylacetone into the reactor, and under the condition of normal temperature and pressure, act on the polymerization reactor for 4 hours to generate the crude polydecene product.

[0034] The crude polydecene product is filtered to remove part of the aluminum trichloride complex catalyst, after being washed with 40% aqueous sodium hydroxide solution, the aluminum trichloride is neutralized until the pH of the solution is neutral, and the rest enters a rotary evaporator for vacuum distillation.

[0035] PAO22 and unreacted 1-decene compound monomers are obtained by gas-liquid separation, and the unreacted 1-decene compound monomers re-enter the polymerization tank for polymerization. The vacuum distillation product is pressurized and mixed with hydrogen and directly enters the device equipped with a hydrogenation catalyst. The feed temperature is 160°C, the hydrogen partial pressure is 15MPa, and the ...

Embodiment 2

[0037] 6200g 1-decene monomer (>99% purity), 150g aluminum trichloride and 30g acetylacetone are put into the reactor, and under normal temperature and pressure conditions, the polymerization reaction takes place in the polymerization kettle for 5 hours to generate polymer Decene crude product.

[0038] The crude polydecene product is filtered to remove part of the aluminum trichloride complex catalyst, after being washed with 40% aqueous sodium hydroxide solution, the aluminum trichloride is neutralized until the pH of the solution is neutral, and the rest enters a rotary evaporator for vacuum distillation.

[0039] PAO22 and unreacted 1-decene compound monomers are obtained by gas-liquid separation, and the unreacted 1-decene compound monomers re-enter the polymerization tank for polymerization. The vacuum distillation product is pressurized and mixed with hydrogen and directly enters the device equipped with a hydrogenation catalyst. The feed temperature is 170°C, the hydro...

Embodiment 3

[0041] Put 6400g of 1-decene monomer, 160g of aluminum trichloride and 45g of acetylacetone into the reaction kettle, and react at a temperature of 40°C under normal pressure for 4.5 hours to produce a crude polydecene product.

[0042] The crude polydecene product is filtered to remove part of the aluminum trichloride complex catalyst, after being washed with 40% aqueous sodium hydroxide solution, the aluminum trichloride is neutralized until the pH of the solution is neutral, and the rest enters a rotary evaporator for vacuum distillation.

[0043] PAO22 and unreacted 1-decene compound monomers are obtained by gas-liquid separation, and the unreacted 1-decene compound monomers re-enter the polymerization tank for polymerization. The vacuum distillation product is pressurized and mixed with hydrogen and directly enters the device equipped with a hydrogenation catalyst. The feed temperature is 160°C, the hydrogen partial pressure is 16MPa, and the volume space velocity is about...

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Abstract

The invention provides a synthetic method for high-grade lubricating oil PAO22 used for an automobile engine. The synthetic method is characterized in that PAO22 base oil is synthesized from high-viscosity 1-decene monomers under the action of a catalyst and an assistant agent, wherein the catalyst is aluminum trichloride, and the assistant agent is acetylacetone. The invention provides a preparation method for the high-grade PAO lubricating oil used for the automobile engine and having high viscosity. When the total-synthesis lubricating oil in the invention is applied to the automobile engine, the service life of the automobile can be prolonged; the industrial catalyst used in the invention is cheap and easily avaialbe; the lubricating oil prepared in the invention can be used for preparation of high-grade lubricating oil and has good viscosity-temperature characteristics; reaction conditions are mild; the method is implemented at normal pressure; and the catalyst is easy to treat.

Description

technical field [0001] The invention relates to the field of chemical synthesis, in particular to a method for preparing base oil, and more specifically to a method for synthesizing high-grade lubricating oil for automobile engines. [0002] technical background [0003] Most existing car engines use mineral oil, but this base oil extracted from crude oil contains a large number of chemicals. Most of these mixtures are aromatic compounds and paraffin carbon compounds (components in lubricating oil whose viscosity changes rapidly with temperature) structure, these substances reduce the properties of the base oil, and the polycyclic aromatic hydrocarbons are carcinogenic and harmful to the environment . Therefore, the use of such oils will shorten the life of the car engine. [0004] If a blended lubricating oil is used, due to the mutual dissolution and balance of the various components, if it is slightly improper, it will affect the lubrication or stability of the lubricati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/14C10M107/10C10N40/25
CPCC08F110/14C10M107/10C10N2030/72C10N2040/25
Inventor 栾英豪戴力陈佩文
Owner SHANGHAI OULEIFEN BIOLOGICAL TECH
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