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Hydrogenation method for producing lubricating oil base oil through poor-quality heavy distillate oil

A technology for lubricating base oil and heavy distillate oil, which is applied in hydrotreating process, hydrocarbon oil treatment products, petroleum industry, etc., can solve the problems of unimproved product quality of hydrocracking unit, and reduced equipment investment and operating cost. , to achieve the effect of reducing hydrogen sulfide and ammonia content and increasing hydrogen partial pressure

Active Publication Date: 2015-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only an organic combination of the two units, which reduces the investment and operating costs of the unit, and the product quality of the hydrocracking unit does not improve

Method used

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  • Hydrogenation method for producing lubricating oil base oil through poor-quality heavy distillate oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] use figure 1 As shown in the process flow, the hydrocracking in the third stage is a one-pass process, and all the hydrocracking tail oil undergoes isomerization dewaxing reaction. The first stage is loaded with catalyst A, the second stage is filled with catalyst A, and the third stage is filled with FC-50 catalyst.

[0054] Control the refined nitrogen content in the second stage to 15~25μg / g, and control the single-pass conversion rate of >370°C in the cracking stage to ~70wt%.

Embodiment 2

[0056] use figure 1 Process flow shown. Both the first stage and the second stage are filled with catalyst B. Others are the same as embodiment 1.

Embodiment 3

[0058] use figure 1 Process flow shown. Hydrofinishing catalyst A is used in the first stage, and hydrofinishing catalyst B is used in the second stage. Others are the same as embodiment 1.

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Abstract

The present invention discloses a hydrogenation method for producing lubricating oil base oil through poor-quality heavy distillate oil. According to the method, poor-quality heavy distillate oil and hydrogen gas enter a first-stage reaction zone to carry out a hydrorefining reaction, the reaction effluent is separated, the obtained liquid enters a second-stage reaction zone to carry out a hydrorefining reaction, the second-stage reaction effluent enters a third-stage reaction zone to carry out a hydrocracking reaction, the hydrocracking effluent is separated, and at least part of the tail oil and new hydrogen are mixed and then are subjected to an isomerizing dewaxing and finishing reaction to obtain various lubricating oil base oils. With the method of the present invention, the nitrogen-containing impurities in the poor-quality raw material can be subjected to hydrotreating under the relatively mild condition so as to make the poor-quality raw material meet the hydrocracking feeding requirement, such that the lubricating oil base oil raw material source is broadened; and the hydrorefining temperature is substantially reduced so as to increase the operation period of the device and process the poor-quality raw material, or increase the processing capacity of the device in the same operation period.

Description

technical field [0001] The invention discloses a hydrogenation method for producing lubricating oil base oil, in particular to a hydrogenation method for producing lubricating oil base oil by processing low-quality heavy distillate oil through a combination process of hydrocracking and isomerization dewaxing. Background technique [0002] With the rapid development of my country's economy, the oil processing capacity has grown rapidly. At the same time, domestic hydrocracking technology has also obtained large-scale industrial applications. By the end of 2011, there were more than 40 sets of hydrocracking units in operation in my country, with a total processing capacity of more than 50.0Mt / a, and the processing capacity leapt to the top of the world. second. In addition, due to the year-by-year deterioration of the quality of domestic crude oil, the substantial increase in the processing volume of imported high-sulfur crude oil, the increasingly stringent requirements for e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2400/10
Inventor 白振民刘继华孙立刚
Owner CHINA PETROLEUM & CHEM CORP
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