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Method for synthesis of poly alpha-olefin lubricating oil base oil

A technology for olefin lubricating oil and base oil, which is applied in the petroleum industry and the production of liquid hydrocarbon mixtures, etc., can solve the problems of low utilization rate of coal liquefaction products and single raw materials, and achieve the effect of improving comprehensive utilization value and broadening raw materials.

Inactive Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that there is a single polyalpha-olefin lubricating oil base oil raw material in the prior art, and the coal liquefaction product coal wax utilization rate is not high, and a new synthetic polyalpha-olefin lubricating oil base oil is provided. method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 100 parts (weight) of polymerization raw materials to the reaction kettle under the protection of nitrogen atmosphere. The raw material composition is: 80wt% normal alpha-olefins, 20wt% normal alkanes, and the average carbon number of raw alpha-olefins is 9.6. Raw materials were heated to 90°C in the reactor, 2.34 parts (by weight) of aluminum trichloride and 0.66 parts (by weight) of titanium tetrachloride were added, and reacted for 3 hours at 80°C and 0.2 MPa. The reaction product was neutralized, washed with water, and separated from the catalyst, and then distilled to remove fractions less than 280°C to obtain a viscosity index of 154 and a viscosity of 8.76mm at 100°C 2 / s, polyalphaolefin lubricating oil base oil with a freezing point of -56°C. The yield of polyalphaolefin lubricating base oil was 86.27%.

Embodiment 2

[0023] Add 100 parts (weight) of polymerization reaction raw materials to the reaction kettle under the protection of nitrogen atmosphere. The raw material composition is: 80wt% normal alpha-olefins, 20wt% normal alkanes, and the average carbon number of raw alpha-olefins is 10. Raw materials were heated to 90°C in the reactor, 2.34 parts (by weight) of aluminum trichloride and 0.66 parts (by weight) of titanium tetrachloride were added, and reacted at 90°C and 0.15 MPa for 2 hours. The reaction product was neutralized, washed with water, and the catalyst was separated, and then the fraction less than 280°C was distilled off to obtain a viscosity index of 162 and a viscosity of 12.73mm at 100°C. 2 / s, polyalphaolefin lubricating oil base oil with a freezing point of -57°C. The yield of polyalphaolefin lubricating base oil was 83.24%.

Embodiment 3

[0025] Add 100 parts (weight) of polymerization reaction raw materials to the reaction kettle under the protection of nitrogen atmosphere. The raw material composition is: 80wt% normal alpha-olefins, 20wt% normal alkanes, and the average carbon number of raw alpha-olefins is 10. Raw materials were heated to 80°C in the reactor, 0.78 parts (by weight) of aluminum trichloride and 0.22 parts (by weight) of titanium tetrachloride were added, and reacted at 80°C and 0.2 MPa for 2 hours. The reaction product is neutralized, washed with water, separated from the catalyst, and then distilled to remove fractions less than 280°C to obtain a viscosity index of 168 and a viscosity of 8.32mm at 100°C 2 / s, polyalphaolefin lubricating oil base oil with a freezing point of -61°C. The yield of polyalphaolefin lubricating oil base oil was 80.46%.

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Abstract

The invention relates to a method for the synthesis of poly alpha-olefin lubricating oil base oil, and mainly solves the problems of single raw material of poly alpha-olefin lubricating oil base oil and low utilization rate of coal liquefaction product coal wax in the prior art. According to the method, a stream which contains alpha-olefin and is prepared by cracking coal wax is used as the raw material, and is contacted with a catalyst for polymerization under the conditions of reaction temperature of 40 and 140 DEG C, reaction pressure of 0.1-0.5MPa, and reaction time of 1-10 hours, and the polymerization product is processed to obtain the poly alpha-olefin lubricating oil base oil; the catalyst is a mixture of halogenated aluminum and titanium halide, the technical scheme can well solve the problems, and the method can be used for industrial production of the poly alpha-olefin lubricating oil base oil by the coal wax cracking.

Description

technical field [0001] The invention relates to a method for synthesizing polyalphaolefin (PAO) lubricating base oil. Background technique [0002] Most of the domestic lubricating oils used for mechanical anti-wear come from petroleum, and the properties of petroleum-based lubricating oils usually depend on the properties and composition of crude oil used to produce base oils. Although the composition and properties of the base oil can be improved through processes such as hydrogenation, and the additives and blending process have also been improved, it is still difficult to meet the lubrication requirements under certain harsh conditions. More severe service conditions require lubricating oils to have better chemical stability, anti-aging performance and radiation resistance. Compared with mineral oils of the same viscosity, polyalphaolefin (PAO) synthetic lubricating oil base oil has high viscosity index, high flash point, low pour point, good low temperature fluidity, w...

Claims

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Application Information

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IPC IPC(8): C10G50/02
Inventor 沈本贤于小桥俞巧珍孙辉杨慧青杨兰李登
Owner CHINA PETROLEUM & CHEM CORP
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