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Preparation method of poly alpha-olefin base oil with high viscosity index

A base oil and high-viscosity technology, which is applied in the petroleum industry and the production of liquid hydrocarbon mixtures. It can solve the problems of limited preparation costs of PAO base oil raw materials, achieve high solid-load reaction efficiency, simple post-treatment process, and reduce environmental pollution. and the effect of equipment corrosion

Inactive Publication Date: 2013-09-18
上海泰强粘合剂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention attempts to solve the problem of limited PAO base oil raw materials and high production cost, and proposes a method based on ethylene, isobutylene and C 6 ~C 12 A new method for preparing PAO base oil with high viscosity index from other α-olefins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of high viscosity index polyalphaolefin base oil is as follows.

[0037] (1) γ-alumina (Al 2 o 3 ) carrier is impregnated with copper salt solution

[0038] Gamma-alumina (Al 2 o 3 ) the carrier was immersed in a 1.0M cupric chloride solution for 12 hours, washed and dried, and then roasted at 600°C for 12 hours at a high temperature under nitrogen protection to obtain a supported copper (II) / γ-Al 2 o 3 .

[0039] (2) Immobilize the organoaluminum compound in solution

[0040] Under the condition of nitrogen protection, in 15g loading copper(II) / γ-Al 2 o 3 Add 150ml of n-hexane solution of 5ω% ethyl aluminum dichloride, keep at reflux temperature for 6 hours, filter the obtained solids, wash with n-hexane, and dry in vacuum to obtain gamma-alumina (gamma-Al 2 o 3 ) supported copper (II)-organoaluminum immobilized catalyst.

[0041] The chlorine content of the immobilized catalyst was measured by the Volhard titration method, and the measu...

Embodiment 2

[0048] A preparation method of high viscosity index polyalphaolefin base oil is as follows.

[0049] (1) γ-alumina (Al 2 o 3 ) carrier is impregnated with copper salt solution

[0050] Gamma-alumina (Al 2 o 3 ) the carrier was immersed in 1.0M copper nitrate solution for 12 hours, washed and dried, and then roasted at 400°C for 4 hours at a high temperature under nitrogen protection conditions to obtain supported copper (II) / γ-Al 2 o 3 .

[0051] (2) Immobilize the organoaluminum compound in solution

[0052] The content of step (2) is the same as that of Example 1, the difference is: replace ethylaluminum dichloride with diethylaluminum chloride.

[0053] The chlorine content of the solid-supported catalyst was measured to be 10.2ω%.

[0054] (3) Carry out oligomerization reaction to prepare olefin oligomer

[0055] The content of step (3) is the same as that of Example 1, and the difference is: replace 1-octene with 1-decene, 1.0 grams of tert-butyl chloride cocatal...

Embodiment 3

[0061] A preparation method of high viscosity index polyalphaolefin base oil is as follows.

[0062] (1) γ-alumina (Al 2 o 3 ) carrier is impregnated with copper salt solution

[0063] Gamma-alumina (Al 2 o 3 ) the carrier was immersed in 0.5M copper sulfate solution for 12 hours, washed and dried, and then baked at 200°C for 6 hours at a high temperature under nitrogen protection to obtain the supported copper (II) / γ-Al 2 o 3 .

[0064] (2) Immobilize the organoaluminum compound in solution

[0065] The content of step (2) is with embodiment 1, and its difference is: keep 12 hours under reflux temperature.

[0066] The chlorine content of the solid-supported catalyst was measured to be 22.7ω%.

[0067] (3) Carry out oligomerization reaction to prepare olefin oligomer

[0068] The content of step (3) is with embodiment 1, and its difference is: 1-hexene replaces 1-octene, 1-hexene consumption 220ml (1-hexene concentration is 35.5v%.), 40 ℃ of oligomerization temperatu...

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Abstract

The invention discloses a preparation method of poly alpha-olefin (PAO) base oil with high viscosity index. Suitably, the method comprises the steps of: with ethylene and isobutene and other alpha-olefin of C6-C12 as raw materials and under the conditions of temperature of 20 DEG C-60 DEG C and partial hydrogen pressure of 0.3-0.5, loading a copper (II)-organic aluminum immobilized catalyst with gama-Al2O3, catalyzing ethylene / isobutene / alpha-olefin of C6-C12 for an oligomerization reaction for 2-4 hours by taking tert-butyl chloride as a catalyst promoter, and carrying out washing in water, drying, atmospheric distillation and reduced-pressure distillation on the product to obtain an olefin oligomer; and then under the conditions of temperature of 200 DEG C-280 DEG C, pressure of 2.5-5.0MPa, idle speed of 0.4-1.0h<-1>, and hydrogen-to-oil of 500:1, hydrogenating the oligomer through an Mo-Ni / gama-Al2O3 catalyst to obtain PAO (poly alpha olefin) base oil. According to the method, the yield of the PAO base oil is large, the kinematic viscosity of the oligomer is 27.8-42.4.0mm<2> / s at 100 DEG C, the viscosity index is 147-171, the pour point is minus 37 DEG C-minus 47 DEG C, and the bromine value is less than 0.050 bromine g / 100gPAO.

Description

technical field [0001] The invention relates to a preparation method of high viscosity index polyalpha-olefin base oil. Background technique [0002] During most of the 20th century, the quality of lubricating oil was basically guaranteed by the compounding technology of mineral base oil prepared from crude oil through various traditional "separation processes" and various additives. Since the 1970s, with the technological progress of various engines and other mechanical equipment and the increasingly urgent "energy saving" and "environmental protection" requirements, the viscosity-temperature properties of lubricating oil (marked by viscosity index), volatility, The main properties such as thermal oxidation stability have put forward increasingly stringent requirements, so that the synthetic base oil obtained by synthesis and hydrogenation chemical conversion process has been developed. [0003] Polyalphaolefin base oil (PAO) has high viscosity index, high flash point, low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G50/02
Inventor 米普科陈雪冬许胜雨文驹朱玉玲孔晓娟蔡艳吴俊敏顾瑾璟晁丽刘小飞赵妍
Owner 上海泰强粘合剂有限公司
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