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A method for producing special lubricant base oil

A lubricating oil base oil and production method technology, which is applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil processing products, etc., can solve the problems of operation cycle limitation, high reaction temperature at the outlet of the bed, and reduce the severity, optimize the effect, Effect of reducing hot spot temperature

Active Publication Date: 2017-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method improves the average reaction temperature of the hydrodepressant catalyst and utilizes the temperature rise of the refined preparation to increase the utilization rate of the depreciation catalyst, the reaction temperature at the outlet of each bed is still relatively high, and the operation period is limited by a certain degree. limits

Method used

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  • A method for producing special lubricant base oil

Examples

Experimental program
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Effect test

Embodiment 1

[0042] use figure 1 In the process flow shown, lube base oil is produced by gradation series and mixed process. In Example 1, two hydrogenation reaction zones connected in series are included. In the composite bed of refined decondensation catalyst in each reaction zone, the mixing volume ratio of the hydrogenation decondensation catalyst and the hydrofining catalyst is 1:2, and the total amount of catalyst used is Both of Comparative Example 1 and Comparative Example 2 are the same. The hydrofining catalyst used in Example 1 is FF-46 catalyst, and the hydrodecondensation catalyst is FDW-3 catalyst, both of which are commercial catalysts developed and produced by Fushun Petrochemical Research Institute.

[0043] The operating conditions and test results are listed in Table 3.

Embodiment 2

[0045] use figure 1 In the process flow shown, lube base oil is produced by gradation series and mixed process. In Example 1, two hydrogenation reaction zones connected in series are included. In the composite bed of the combined decondensation catalyst in each reaction zone, the mixing volume ratio of the hydrogenation decondensation catalyst and the hydrofinishing catalyst is 1:2, and the total amount of catalyst used is Both of Comparative Example 1 and Comparative Example 2 are the same. The hydrofining catalyst used in Example 2 is FF-46G catalyst, and the hydrodecondensation catalyst is FDW-3 catalyst, both of which are commercial catalysts developed and produced by Fushun Petrochemical Research Institute.

[0046] The operating conditions and test results are listed in Table 3.

[0047] Table 2 Raw Oils.

[0048] project Raw oil source Decompression wax oil Density(20℃) / g·cm -3

0.9401 Distillation range / ℃ 309～522 Nitrogen / μg·g ...

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Abstract

The present invention discloses a method for producing special lubricating oil base oil. According to the method, a wax oil raw material and hydrogen gas are mixed and then sequentially pass through at least two hydrogenation reaction zones connected in series, wherein each hydrogenation reaction zone sequentially comprises a hydrodewaxing catalyst bed layer and a refining dewaxing catalyst composite bed layer filled with a hydrodewaxing catalyst and a hydrorefining catalyst in a mixed manner according to the material flowing direction; and the reaction effluent obtained from the last hydrogenation reaction zone is subjected to separation and fractionation to obtain the lubricating oil base oil, the white oil and other products. With the method of the present invention, the temperature decrease during the hydrodewaxing process and the temperature increase during the hydrogenation process are subjected to reasonable combination utilization, such that the low freezing point lubricating oil base oil is produced while the viscosity index is increased, the hot spot temperature of the device is reduced, and the operation period is prolonged; and the cold hydrogen consumption or the heating furnace fuel gas loss is reduced, and the operating cost is saved.

Description

technical field [0001] The invention relates to a production method of special lubricating oil base oil, in particular to a hydrogenation method for producing special lubricating oil base oil through catalyst grading technology and composite filling technology. Background technique [0002] Lubricant is a very important petroleum product, and it is the key factor to drive moving parts. Although its products only account for about 2% of the crude oil processing volume, there are hundreds of varieties due to the wide variety of use conditions, and the quality The requirements are strict, and lubricating oil is a kind of lubricant. For a wide variety of lubricating oils, it is impossible to produce each of them individually. Therefore, in order to simplify its production, all countries adopt the method of first making lubricating oil base oils that meet certain standards, and then blending and adding additives according to market needs. to produce various products. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2400/10C10G2400/14
Inventor 王仲义彭冲崔哲石友良孙士可黄新露吴子明
Owner CHINA PETROLEUM & CHEM CORP
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