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Method of producing ultrahigh-viscosity-index lubricant base oil

A technology for lubricating base oil and viscosity index, which is applied in lubricating compositions, base materials, petroleum industry, etc., can solve the problems of changes in product yield and product properties, complex reactions, and many Fischer-Tropsch synthetic wax conversion and processing steps. , to achieve the effect of improving the yield

Active Publication Date: 2016-02-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] It can be seen that the prior art utilizes different approaches to realize the conversion of Fischer-Tropsch synthetic wax and obtain related target products. The reaction in the process is complex, and the hydrogenation process and the catalyst system have an impact on the selectivity of the conversion product, resulting in changes in product yield and product properties. Moreover, there is currently no way to optimize the above-mentioned complicated process while maintaining, or even Process technology to improve product yield and product performance

Method used

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  • Method of producing ultrahigh-viscosity-index lubricant base oil
  • Method of producing ultrahigh-viscosity-index lubricant base oil

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Experimental program
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Effect test

Embodiment 1

[0049] The reaction is filled with catalysts ISC-1 and RLF-10 L The Fischer-Tropsch synthetic wax fraction I and the petroleum fraction II are mixed in a mass ratio of 1:1 to obtain the Fischer-Tropsch synthetic wax fraction feed.

[0050] The feed was sequentially contacted with a wax hydroisomerization catalyst and a hydrofining catalyst for reaction. The reaction conditions are shown in Table 2.

[0051] The reaction products were separated to obtain lubricating oil base oil. The yield and properties of the lubricating base oil are shown in Table 3.

Embodiment 2

[0053] The reaction is filled with catalysts ISC-1 and RLF-10 L The Fischer-Tropsch synthetic wax fraction I and petroleum fraction II are mixed in a mass ratio of 0.3:1 to obtain the Fischer-Tropsch synthetic wax fraction feed.

[0054] The feed was sequentially contacted with a wax hydroisomerization catalyst and a hydrofining catalyst for reaction. The reaction conditions are shown in Table 2.

[0055] The reaction products were separated to obtain lubricating oil base oil. The yield and properties of the lubricating base oil are shown in Table 3.

Embodiment 3

[0057] The reaction is filled with catalysts ISC-1 and RLF-10 L The Fischer-Tropsch synthetic wax fraction II and the petroleum fraction II are mixed at a mass ratio of 0.6:1 to obtain the Fischer-Tropsch synthetic wax fraction feed.

[0058] The feed was sequentially contacted with a wax hydroisomerization catalyst and a hydrofining catalyst for reaction. The reaction conditions are shown in Table 2.

[0059] The reaction products were separated to obtain lubricating oil base oil. The yield and properties of the lubricating base oil are shown in Table 3.

[0060] The properties of the high boiling point petroleum fraction I and petroleum fraction II products after isomerization conversion and hydrorefining are shown in Table 4. The sulfur content, nitrogen content, pour point and other indicators of the product are greatly improved. It can be recovered as a lubricating oil base oil product and can also be recycled as a high boiling point petroleum fraction in the present invention....

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Abstract

A method of producing ultrahigh-viscosity-index lubricant base oil comprises the following steps: (1) performing contact reactions to Fischer-Tropsch synthetic wax fraction material successively with a wax hydroisomerization conversion catalyst and a hydrorefining catalyst in the presence of hydrogen gas to prepare a mixture being subjected to the wax hydroisomerization conversion and the hydrorefining reactions; and (2) separating the mixture obtained in the step (1) to obtain the lubricant base oil, wherein the Fischer-Tropsch synthetic wax fraction material is a mixture composed of a Fischer-Tropsch synthetic wax fraction and a high-boil-point petroleum fraction. The Fischer-Tropsch synthetic wax fraction is 350-500 DEG C in distillation range. Compared with the prior art, the method can significantly increase the yield of the lubricant base oil.

Description

Technical field [0001] The invention relates to a processing method of lubricating oil base oil, and more specifically to a process method for converting Fischer-Tropsch synthetic wax to obtain lubricating oil base oil with ultra-high viscosity index and high yield. Background technique [0002] The production of existing fuels and lubricating base oils usually takes waxy mineral oil as raw materials and is realized through processes of hydrocracking, isomerization, catalytic dewaxing, hydrofinishing, or a combination thereof. With the reduction of crude oil resources and the improvement of environmental protection requirements, the production of clean fuels and lubricant base oils will replace traditional waxy mineral oil raw materials with Fischer-Tropschsythesis (F-T, or Fischer-Tropschsythesis) wax. Fischer-Tropsch synthetic wax is a mixture of hydrocarbons produced by coal, natural gas and biomass (Biomass) through gas production and Fischer-Tropsch synthesis technology. In ...

Claims

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Application Information

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IPC IPC(8): C10G65/04C10M101/02
Inventor 胡松伟郭庆洲王鲁强高杰夏国富聂红李大东
Owner CHINA PETROLEUM & CHEM CORP
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