Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of polyalpha-olefin base oil and preparation method thereof

A base oil and olefin technology, applied in the field of olefin polymerization, can solve the problems of low viscosity of PAO base oil, and achieve the effects of easy product separation, reducing environmental pollution and avoiding corrosion

Active Publication Date: 2022-07-05
PETROCHINA CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these A1C1 3 The PAO base oil prepared by the solid-supported catalyst has a low viscosity, and the kinematic viscosity at 100°C is generally 3-8mm 2 / s
For the need of 100 ℃ kinematic viscosity 40mm 2 PAO with a viscosity range of about / s is currently mainly solved by mixing high-viscosity and low-viscosity PAO oils, but due to the existence of low-viscosity components, the lubricating oil has higher volatility

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] The preparation method of the polyalpha-olefin base oil provided by the present invention comprises the following steps:

[0044] S1. Under the conditions of temperature 50℃~120℃, pressure 0.1~1.0MPa, and α-olefin / solvent volume ratio of 1:0~1:1, use Cr-AlCl 3 / Al 2 O 3 The solid-supported catalyst catalyzes the oligomerization reaction of the α-olefin mixture for 3 to 8 hours;

[0045] S2. After the reaction is stopped, filter the catalyst, wash with distilled water, remove the solvent by atmospheric distillation, remove unreacted α-olefin and part of the α-olefin dimer by vacuum distillation, and obtain polyα-olefin base oil by hydrogenation.

[0046] Wherein, the Cr-AlCl 3 / Al 2 O 3 The immobilized catalyst is prepared by a liquid-phase immobilization method, including the following steps:

[0047] (1) adding sodium hydroxide solution to the chromium acetate solution, adjusting the pH of the solution to 7.5~8.5, reacting with the γ-alumina carrier at room tempe...

Embodiment 1

[0050] 1. Preparation of supported catalyst:

[0051] (1) Slowly add 5 (weight) % sodium hydroxide solution to 2.0 liters of 2.0M (mol / liter) chromium acetate solution, adjust the pH of the solution to 8.0, and immediately add 1 kg of γ-alumina (Al 2 O 3 ) in the stirring reactor of the carrier, react at room temperature and stirring conditions for 2 hours, filter the carrier and dry it in a vacuum oven at room temperature, under the protection of inert gas, calcinate at a high temperature of 600 ° C for 4 hours to obtain Cr / γ-Al 2 O 3 catalyst;

[0052] (2) 100 grams of anhydrous aluminum trichloride was made into a solution in 3.0 liters of toluene solvent, and added to 600 grams of Cr / γ-Al 2 O 3 , kept at reflux temperature for 10 hours, removed the solvent, washed the solid catalyst with toluene, and vacuum-dried to obtain Cr-AlCl 3 / Al 2 O 3 catalyst;

[0053] The chlorine content in the above-obtained supported catalyst is 11.6ω%, and the chromium content is 5.6ω...

Embodiment 2

[0059] 1. Preparation of supported catalyst:

[0060](1) Slowly add 5 (weight) % sodium hydroxide solution to 2.0 liters of 2.0M (mol / liter) chromium acetate solution, adjust the pH of the solution to 7.5, and immediately add to a solution containing 1 kg of γ-alumina (Al 2 O 3 ) in the stirring reactor of the carrier, react at room temperature and stirring conditions for 2 hours, filter the carrier and dry it in a vacuum oven at room temperature, under the protection of inert gas, calcinate at a high temperature of 400 ° C for 8 hours to obtain Cr / γ-Al 2 O 3 catalyst;

[0061] (2) A solution of 200 grams of anhydrous aluminum trichloride in 3.0 liters of toluene solvent was added to 600 grams of Cr / γ-Al 2 O 3 was kept at reflux temperature for 8 hours, the solvent was removed, the solid catalyst was washed with toluene, and dried under vacuum to obtain Cr-AlCl 3 / Al 2 O 3 catalyst;

[0062] The chlorine content of the obtained supported catalyst was 15.9ω% and the chr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The present invention relates to a method for preparing a poly-alpha-olefin base oil, comprising the following steps: S1, at a temperature of 50° C. to 120° C., a pressure of 0.1 to 1.0 MPa, and a volume ratio of alpha-olefin to solvent of 1:0 to 1:1 condition, with Cr-AlCl 3 / Al 2 O 3 The solid-supported catalyst catalyzes the oligomerization reaction of the α-olefin mixture for 3 to 8 hours; S2, after the reaction is stopped, the catalyst is filtered, washed with distilled water, the solvent is removed by atmospheric distillation, and the unreacted α-olefin and some α-olefin dimerization are removed by vacuum distillation After hydrogenation, polyα-olefin base oil is obtained. The present invention also relates to polyalpha-olefin base oils prepared by the above method. The PAO base oil prepared by this method needs a kinematic viscosity of 30-40mm at 100℃ 2 PAOs in the / s viscosity range do not need to be mixed with low-viscosity PAO oils, which can greatly reduce the volatility of lubricating oils.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular to a polyalpha-olefin base oil and a preparation method thereof. Background technique [0002] During most of the 20th century, the quality of lubricating oil was basically guaranteed by the combination of mineral base oils obtained 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 (marked by viscosity index), volatility, The main properties such as thermal-oxidative stability have put forward increasingly stringent requirements, so that the synthetic base oil obtained by the synthesis and hydrochemical conversion process has been developed. [0003] According to the classification of API base oil, PAO (poly-alpha-olefin) is a cl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10M105/04C07C11/02C07C2/42B01J35/10B01J27/10C10N20/02
CPCC10M105/04C07C11/02C07C2/42B01J27/10B01J35/1019C10M2203/024
Inventor 孙恩浩米普科王力搏蒋岩王婷兰刘通韩云光赵铁凯马克存王斯晗王桂芝徐显明王玉龙高晗王秀绘徐婷婷王紫东孙维霍宏亮马立莉黄付玲林如海王亚丽
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com