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Combined method of hydrocracking and producing lubricant oil base oil

A technology for lubricating base oil and hydrocracking tail oil, which is applied in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc. The quality is difficult to meet the requirements and other problems, to achieve the effect of reducing equipment investment and operating costs, increasing yield, and facilitating long-term stable operation

Inactive Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of lubricating oil base oil with the hydrocracking tail oil of the whole distillate will lead to low yield of lubricating oil base oil, and the quality of lubricating oil base oil is difficult to meet the requirements
At the same time, the target product with low yield also increases the operating cost of the device
Therefore, none of the above methods can make the hydrocracking tail oil more rational and effective utilization.

Method used

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  • Combined method of hydrocracking and producing lubricant oil base oil
  • Combined method of hydrocracking and producing lubricant oil base oil
  • Combined method of hydrocracking and producing lubricant oil base oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First, the hydrocracking tail oil (see Table 1 for properties) enters the vacuum tower for vacuum fractionation. The cut point of the vacuum fractionation is 380°C, and the light fraction of hydrocracking tail oil 380°C is mixed with hydrogen, and then goes through two reaction zones of hydroisomerization dewaxing and supplementary refining in sequence (the catalyst used is shown in Table 2); the reaction product is passed through Gas-liquid separation, the gas is desulfurized and mixed with supplemental hydrogen before recycling, and the liquid product is often distilled under reduced pressure to obtain different lubricating base oil products. The process conditions and results of the reaction are shown in Table 3, and the properties of different lubricating base oil products are shown in Table 4 and Table 5.

Embodiment 2

[0034] The cut point of vacuum fractionation of hydrocracking tail oil is 420°C, and other conditions are the same as in Example 1.

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Abstract

The invention relates to a combined method of hydrocracking and producing lubricant oil base oil, which comprises the following steps of: firstly, carrying out pressure reduction on hydrocracking tail oil; and carrying out heavy fraction on the fractionated hydrocracking tail oil used as a raw material for producing the lubricant oil base oil. The heavy fraction of the hydrocracking tail oil can obtain excellent lubricant oil base oil through the technique process of heterogeneous dewaxing-supplemental refining. The hydrocracking tail oil is subjected to light fraction and circulated back to a hydrocracking device to be mixed with a hydrocracking raw material for further hydrocracking. Compared with the prior art, the method improves the yield of the lubricant oil base oil, reduces the cost of the product and effectively solves the problem of insufficient raw material for producing the lubricant oil base oil in enterprises.

Description

technical field [0001] The invention relates to a method for combining hydrocracking and lubricating base oil production, in particular to a method for producing lubricating base oil by using hydrocracking tail oil as raw material. Background technique [0002] Hydrocracking is one of the most important processing methods in today's oil refining industry. The products generated after hydrocracking of raw materials are mainly gas and liquid products including solvent oil, gasoline components and middle distillates (kerosene fraction and diesel fraction). Secondly, there is a considerable part of unconverted oil, which is generally called hydrocracking tail oil. The hydrocracking tail oil has also been well hydromodified during the hydrocracking process, so it has the characteristics of low aromatic content, light color, low content of impurities such as sulfur and nitrogen, and high content of naphthenes and alkanes. [0003] At present, there are many ways to apply hydrocr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/12
Inventor 关明华姚春雷王鑫全辉
Owner CHINA PETROLEUM & CHEM CORP
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