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Synthetic method of lubricating oil base oil

A lubricating oil base oil and synthesis method technology, applied in the field of lubricating oil, can solve the problems of low utilization rate of highly branched olefins, single raw material, poor viscosity-temperature performance, low-temperature performance, etc., to solve poor low-temperature performance and improve viscosity temperature performance, increase the degree of polymerization and the effect of regularity

Active Publication Date: 2020-06-16
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention mainly aims to solve the problem of poor viscosity-temperature performance and low-temperature performance in polyα-olefin lubricating oil base oil synthesized from complex raw materials and high-carbon olefins in the prior art, and solve the problem of single raw material and highly branched polyα-olefin lubricating oil base oil. Olefin utilization rate is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The above-mentioned two kinds of olefin raw materials and two-step polymerization process were used to carry out the polymerization reaction. First, the reactor was cleaned with cyclohexane for half an hour, and then the reactor was purged with nitrogen three times to remove the air and traces of water in the polymerization reactor. Carry out the first step of polymerization reaction: add 100 g of wax cracking olefin raw materials, 50 g of cyclohexane solvent, TiCl 4 The amount of addition is 1g, and triethylaluminum Al(Et) is added according to the ratio of Al / Ti molar ratio of 5:1 3 , feed 20g of ethylene raw material, start heating and stirring, control the reaction temperature at 80°C to 100°C, and stop stirring after 10min of reaction. When the temperature in the reactor drops to room temperature, carry out the second step reaction: add AlCl to the reactor 3 Catalyst 0.5g, start stirring, control the reaction temperature 150°C by taking heat from the external circ...

Embodiment 2

[0054] Using the same polymerization process as in Example 1: in the polymerization reactor, 100 g of wax cracking olefin raw materials, 50 g of cyclohexane solvent, TiCl 4 The amount of addition is 7.5g, and Al(Et) is added according to the ratio of Al / Ti molar ratio of 10:1 3 , feed 50 g of ethylene raw material, start heating and stirring, control the reaction temperature to 80°C, and stop stirring after 40 minutes of reaction. When the temperature in the reactor drops to room temperature, carry out the second step reaction: add AlCl to the reactor 3 Catalyst 15g, start stirring, control the reaction temperature 80°C by taking heat from the external circulation, stop stirring after 30 minutes of reaction, empty the reactor, flush with nitrogen for replacement 4 times, pass the tail gas into the alkali solution for absorption, and put the reaction materials into a container equipped with alkaline earth The three-necked flask was placed in an oil bath to heat up the reaction...

Embodiment 3

[0056] Using the same polymerization process as in Example 1: in the polymerization reactor, 150 g of wax cracking olefin raw materials, 100 g of cyclohexane solvent, TiCl 4 The amount of addition is 7.5g, and the ratio of Al / Ti molar ratio is 15:1, and diethylaluminum chloride Al(Et) is added 2 Cl, feed 50 g of ethylene raw material, start heating and stirring, control the reaction temperature to 90°C, and stop stirring after 60 minutes of reaction. When the temperature in the reactor drops to room temperature, carry out the second step reaction: add AlCl to the reactor 3 Catalyst 20g, start stirring, control the reaction temperature 180°C by taking heat from the external circulation, stop stirring after 60 minutes of reaction, empty the reactor, flush with nitrogen for replacement 4 times, pass the tail gas into alkali solution for absorption, and put the reaction materials into a container equipped with alkaline earth The three-necked flask was placed in an oil bath to hea...

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Abstract

The invention discloses a synthetic method of lubricating oil base oil. The method comprises the following steps: simultaneously adding high-carbon olefin and ethylene into a high-pressure white steelpolymerization reaction kettle, adding a Ziegler-Natta catalyst into the reaction kettle, starting a reaction, and controlling conditions in a polymerization process; after the reaction is finished,pressing the material into a second reaction kettle through nitrogen (or cooling to room temperature in the same reaction kettle) while adding an AlCl3 catalyst into the material, and controlling theadding amount of the catalyst and the polymerization reaction conditions; and after the reaction is finished, emptying and depressurizing the reaction kettle, removing the residual catalyst from the obtained crude product through an alkali washing process, removing the unreacted high-carbon olefin through pressure reducing distillation, and carrying out structural characterization determination onthe product obtained after hydrogenation to determine branching degree, and carrying out performance test to determine indexes such as viscosity, viscosity index, pour point and the like of the product. According to the present invention, a complex raw material high-carbon olefin is adopted as a raw material, and the synthesized poly-alpha-olefin lubricating oil base oil has excellent viscosity-temperature performance and excellent low-temperature performance.

Description

technical field [0001] The invention relates to a synthesis method of lubricating oil base oil, the main purpose is to improve the viscosity-temperature performance and low-temperature performance of the lubricating oil base oil, and belongs to the field of lubricating oil. Background technique [0002] Poly-α-olefin lubricating base oil (PAO) is a kind of lubricating oil base oil with excellent comprehensive performance. With the advantages of wide phase range, small evaporation loss, low pour point, high viscosity index, and good thermal oxidation stability, it can meet increasingly stringent OEM specifications and meet contemporary stringent energy-saving and environmental protection requirements. [0003] PAO is generally a high-carbon α-olefin (C 8 -C 12 ) as the raw material, and the composition of the raw material, that is, the carbon number of olefins directly affects the performance of the oil. The higher the carbon number, the higher the viscosity index and the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M107/02C10G50/02C10N30/02C10N30/08
CPCC10M107/02C10G50/02C10M2205/0206
Inventor 王秀绘王亚丽马克存王力搏褚洪岭徐显明于部伟孙恩浩曹媛媛蒋岩刘通黄付玲高晗王玉龙霍洪亮韩云光韩雪梅林如海关伟红王凤荣陈谦马莉莉孙维徐婷婷
Owner PETROCHINA CO LTD
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