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Production of solvent oil, lubricant base oil and heavy wax by fischer-tropsch synthetic wax

A technology for lubricating oil base oil and Fischer-Tropsch synthetic wax, which is applied in the petroleum industry, processing hydrocarbon oil, hydrotreating process, etc., can solve the problems of not being able to obtain high-quality wax at the same time, and making little contribution to the yield of lubricating oil base oil, etc. Achieve the effect of reducing excessive light weight and increasing added value

Active Publication Date: 2008-07-30
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 wax is more likely to be converted into small molecules by zeolite cracking reaction, using existing methods, not only cannot obtain high-quality wax at the same time, but also does not contribute much to improving the yield of lubricating base oil

Method used

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  • Production of solvent oil, lubricant base oil and heavy wax by fischer-tropsch synthetic wax
  • Production of solvent oil, lubricant base oil and heavy wax by fischer-tropsch synthetic wax
  • Production of solvent oil, lubricant base oil and heavy wax by fischer-tropsch synthetic wax

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This example uses a kind of Fischer-Tropsch synthetic wax as raw material, and its properties are shown in Table 1.

[0037] according to figure 1 The technological process processes the raw material. The catalysts are: catalyst a in hydrotreating zone I, catalyst b in wax hydroconversion zone, catalyst c in hydrotreating zone II, catalyst c in hydrotreating zone III, and the operating conditions are shown in Table 2, wherein, in Distillation zone I distills and separates the wax after hydrorefining to obtain two materials of fraction less than 500°C (yield is 46% by weight) and fraction equal to or greater than 500°C (yield is 54% by weight). The refined wax hydroconversion oil is distilled and separated to obtain solvent oil and lubricating oil base oil that meet the standards of No. 120 and No. 200. The properties of the wax product are shown in Table 3, the material balance of the wax hydroconversion reaction is shown in Table 4, the properties of the lubricating ...

Embodiment 2

[0062] The fraction below 500°C obtained in Example 1 is fed into the isomerization pour point depressant, and the hydrogen partial pressure is 6.0MPa, the reaction temperature (wax hydroconversion reaction zone / hydrorefining reaction zone II) is 360 / 210°C, and the volume space velocity (wax Hydroconversion reaction zone / hydrorefining reaction zone II) 0.5 / 1.0h -1 , under the condition of hydrogen-oil ratio of 600:1, the obtained hydrogenated product is fractionated to produce base oil and solvent oil products, the material balance of the wax hydrogenation conversion reaction is shown in Table 11, the properties of the lubricating oil base oil are shown in Table 12, and the properties of the solvent oil are shown in Table 11. Table 13.

[0063] Table 11

[0064] Hydrogen consumption, %

[0065] Table 12

[0066] Product nature

[0067] Table 13

[0068] project

[0069] It can be seen from Example 2 that when the fraction below 500 °C is fed i...

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Abstract

The invention provides a method of producing prime city naphtha, lube base oil and pyroparaffine from Fischer-Tropsch processed wax. The invention includes: a) contacting the Fischer-Tropsch processed wax with the hydrogenated refined catalyst in a hydrogenation refining reaction zone 1, separating the product in the zone, and obtaining a distillate the final distilling point of which is lower than 380 DEG C to 550 DEG C and a distillate the initial distilling point of which is higher than 380 DEG C to 550 DEG C; b) contacting the distillate the final distilling point of which is lower than 380-550 DEG C to 550 DEG C with a hydrogenated isomerization catalyst in a wax hydrogenation conversion reaction zone, and preparing a wax conversion produced oil the pour point of which is lowered; c) contacting the wax conversion produced oil with the hydrogenated refined catalyst in a hydrogenation refining reaction zone II, and separating the product in a distillation zone 2, obtaining at least one kind of solvent oil and at least one kind of lube base oil; d) contacting the distillate the initial distilling point of which is higher than 380 DEG C to 550 DEG C with a hydrogenated refined catalyst in a hydrogenation refining reaction zone 3, thereby obtaining a wax which is hydrogenated and discolored.

Description

technical field [0001] The invention relates to a method for producing solvent oil, lubricating base oil and wax by using Fischer-Tropsch synthetic wax as raw material. Background technique [0002] Using natural gas as raw material, the Fischer-Tropsch synthesis method can obtain wax with very low sulfur and nitrogen content. 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 with Fischer-Tropsch synthesis product as raw material, which is characterized in that the Fischer-Tropsch synthesis product subjected to hydrogen treatment is hydroisomerized in a hydroisomerization reaction zone, and the isomerization reaction generates Oil is separated by distillation, followed by dewaxing of distillation column bottoms to obtain oil and non-oil fractions. Among them, the operating conditions of the hydroisomerization reaction z...

Claims

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Application Information

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IPC IPC(8): C10G65/04
Inventor 王鲁强郭庆洲黄卫国董维正王轶凡石亚华
Owner CHINA PETROLEUM & CHEM CORP
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