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Method for producing base oil of lubricating oil by using Fischer-Tropsch synthesis wax

A technology of lubricating oil base oil and Fischer-Tropsch synthetic wax, which is applied in the directions of lubricating composition, petroleum industry, processing hydrocarbon oil, etc.

Active Publication Date: 2012-07-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since heavy waxes are more likely to be converted into small molecules by zeolite cracking reactions, the common problem with existing methods is that the yield of lubricating oil base oils is low

Method used

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  • Method for producing base oil of lubricating oil by using Fischer-Tropsch synthesis wax
  • Method for producing base oil of lubricating oil by using Fischer-Tropsch synthesis wax
  • Method for producing base oil of lubricating oil by using Fischer-Tropsch synthesis wax

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Embodiment 1

[0038] This example takes a kind of Fischer-Tropsch synthetic wax as raw material, and its properties are shown in Table 1.

[0039] according to figure 1 The process flow processes the raw material. The catalysts are as follows: Catalyst a is used in hydrorefining zone I, catalyst b is used in both wax hydroconversion reaction zone A and wax hydroconversion reaction zone, the catalyst loading ratio of A zone and B zone is 3:2, and the hydrorefining zone Catalyst c is used in Zone II, and the operating conditions are shown in Table 2.

[0040] See Table 3 for the material balance after separation in the distillation zone.

[0041] The properties of lubricating oil base oil are shown in Table 4.

[0042] Table 1

[0043]

[0044] Item F-T synthetic wax

[0045]

[0046] Density(20℃) / g.·cm -3 0.8055

[0047] Freezing point / ℃ 95 (melting point)

[0048] Sulfur conte...

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Abstract

The invention relates to a method for producing base oil of lubricating oil by using Fischer-Tropsch synthesis wax. The method comprises the following steps of: (a) enabling the Fischer-Tropsch synthesis wax to be in contact with a hydrofining catalyst in a hydrofining reaction region I to obtain the Fischer-Tropsch synthesis wax subjected to hydrogenating alkene saturation and deoxidization; (b) enabling the Fischer-Tropsch synthesis wax obtained in the step (a) to be in contact with a hydrogenating isomerization catalyst in a wax hydrogenating conversion reaction region A to obtain wax converting generation oil with depression of pour point; (c) enabling the wax converting generation oil obtained in the step (b) to be in contact with the hydrogenating isomerization catalyst in a wax hydrogenating conversion reaction region B to obtain a wax converting generation oil with further depression of pour point; (d) enabling the wax converting generation oil with further depression of pour point, obtained in the step (c), to be in contact with the hydrofining catalyst in a hydrofining reaction region II to obtain wax converting generation oil subjected to hydrofining; and (e) separating the generation oil obtained in the step (d) in a distillation region to obtain the base oil of the lubricating oil.

Description

technical field [0001] The invention relates to a method for producing lubricating oil base oil by using Fischer-Tropsch synthetic wax as raw material. Background technique [0002] Using natural gas as raw material, wax with very low sulfur and nitrogen content can be obtained by Fischer-Tropsch synthesis. Through secondary processing, a variety of products with higher added value can be obtained from Fischer-Tropsch synthetic wax. [0003] US 5834522 discloses a method for producing lubricating oil base oil using Fischer-Tropsch synthesis products as raw materials, which is characterized in that the hydro-treated Fischer-Tropsch synthesis products are hydroisomerized in the hydroisomerization reaction zone, and the isomerization reaction generates The oil is separated by distillation, after which the distillation bottoms are dewaxed to obtain oil and non-oil fractions. Wherein, the operating conditions of the hydroisomerization reaction zone, the reaction temperature is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02C10M177/00
Inventor 游岳王鲁强夏国富郭庆洲黄卫国
Owner CHINA PETROLEUM & CHEM CORP
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