Low-cost poly-alpha-olefin base oil and preparation method thereof

A base oil, low-cost technology, applied in the treatment of hydrocarbon oils, base materials, petroleum industry, etc., can solve the problems of limited source of 1-decene raw materials and high cost of PAO base oil, and achieve high immobilization reaction efficiency and reduce Effects of environmental pollution and equipment corrosion, low cost of raw materials and products

Inactive Publication Date: 2013-10-30
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

[0006] The present invention attempts to solve the problems of limited sources of 1-decene raw materials used in PAO base oils and the high cost of PAO base oils, and proposes a low-cost PAO base oil and a new method for producing low-cost PAO base oils

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of a low-cost polyalpha-olefin base oil is as follows.

[0045] (1) The nickel salt solution is impregnated and loaded

[0046] γ-alumina (Al 2 O 3 ) The carrier was immersed in a 1.0M nickel chloride solution for 12 hours, washed and dried under nitrogen protection, and calcined at a high temperature of 600 ° C for 12 hours to obtain a supported nickel (II) / γ-Al 2 O 3 .

[0047] (2) Solution immobilization of organoaluminum compounds

[0048] Ni(II) / γ-Al supported at 15 g under nitrogen protection 2 O 3 150ml of n-hexane solution of 5ω% dichloroethylaluminum was added, kept at reflux temperature for 6 hours, the solid support obtained by filtration was washed with n-hexane, and γ-alumina (γ-Al) was obtained after vacuum drying. 2 O 3 ) Supported Nickel(II)-Organoaluminum Supported Catalyst.

[0049] The chlorine content of the solid-supported catalyst was determined by Volhard titration, and the measured chlorine content was 17.1ω%.

[00...

Embodiment 2

[0057] A preparation method of a low-cost polyalpha-olefin base oil is as follows.

[0058] (1) The nickel salt solution is impregnated and loaded

[0059] The content of step (1) is the same as that of Example 1, and its difference is: the γ-alumina (Al 2 O 3 ) The carrier was immersed in a 0.75M nickel nitrate solution for 12 hours, washed and dried under nitrogen protection, and calcined at a high temperature of 600 ° C for 4 hours to obtain a supported nickel (II) / γ-Al 2 O 3 .

[0060] (2) Solution immobilization of organoaluminum compounds

[0061] The content of step (2) is the same as that of Example 1, except that it is kept at reflux temperature for 10 hours.

[0062] The chlorine content of the solid-supported catalyst was measured to be 18.2ω%, and the nickel content was 2.1ω%.

[0063] (3) Oligomerization to prepare olefin oligomers

[0064] The content of step (3) is the same as that in Example 1, except that: 150ml of 1-decene (1-decene concentration is 27...

Embodiment 3

[0070] A preparation method of a low-cost polyalpha-olefin base oil is as follows.

[0071] (1) Impregnating the nickel salt solution

[0072] The content of step (1) is the same as that of Example 1, except that the nickel chloride solution is 0.5M, and calcined at a high temperature at 400° C. for 6 hours to obtain supported nickel (II) / γ-Al 2 O 3 .

[0073] (2) Solution immobilization of organoaluminum compounds

[0074] The content of step (2) is the same as that of Example 1, except that the concentration of the n-hexane solution of dichloroethylaluminum is 10ω%.

[0075] The chlorine content of the solid-supported catalyst was measured to be 25.0ω%, and the nickel content was 1.7ω%.

[0076] (3) Oligomerization to prepare olefin oligomers

[0077] The content of step (3) is the same as that of Example 1, except that: 1-octene 250ml (1-octene concentration is 38.5υ%.), 2.0 g tert-butyl chloride cocatalyst, hydrogen pressure 0.35MPa, isobutene pressure 0.6 MPa, the o...

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Abstract

The invention discloses a low-cost PAO (poly-alpha-olefin) base oil and a preparation method thereof. The preparation method comprises the following steps: carrying out oligomerization reaction on raw materials isobutylene and C8-C12 alpha-olefins at 50-80 DEG C under the hydrogen partial pressure of 0.25-0.4 MPa and the reaction pressure of 0.5-1.0 MPa by using gamma-aluminum oxide (gamma-Al2O3)-supported nickel (II)-organic aluminum as a catalyst and tert-butyl chlorine as a cocatalyst, and carrying out after-treatment to obtain oligomers; and hydrogenizing the oligomers to obtain the PAO base oil. The C8-C12 alpha-olefin content in the obtained PAO base oil is 60-81 omega%, the number-average molecular weight of the base oil is less than 550, the molecular weight distribution is less than 15, the 100 DEG C kinematic viscosity is 8.8-28.0 mm<2> / s, the viscosity index is 121-147, the pour point is -38 to -52 DEG C, and the bromine number is less than 0.050 bromine g / 100g PAO.

Description

technical field [0001] The invention relates to a low-cost polyalpha-olefin base oil and a preparation method thereof. Background technique [0002] In 1951, the US2559984 patent of Gulf Oil Company first proposed "poly-alpha-olefin (PAO)", which uses a linear alpha-olefin synthesized with aluminum chloride catalyst as the base oil for lubricating oil. After that, the catalyst was explored, studied and improved, and a free radical initiator (Mobil Company Garwood) and ethyl aluminum trichloride / titanium tetrachloride composite catalyst (Shell Company, Southern, etc.) were developed, but the molecular weight range of the obtained product was very wide, Its viscosity-temperature performance is poor. Until the 1970s, based on the continuous research and improvement of linear olefin intermediate raw materials and catalysts by many companies, the quality of PAO base oil gradually showed obvious superiority, and it was able to embark on commercialization. Significant growth in P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/04C10G69/12
Inventor 米普科陈雪冬许胜蔡艳李思宇顾瑾璟徐亚男刘小飞吴俊敏赵妍郑晓清晁丽刘璐
Owner 上海泰强粘合剂有限公司
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