A hydrogenation method for producing lubricating oil base oil from inferior raw materials

A technology for lubricating base oil and low-quality raw material oil, which is applied in the fields of hydroprocessing, petroleum industry, and hydrocarbon oil treatment, and can solve the problems of reducing equipment investment and operating costs, and not improving the product quality of hydrocracking units, and achieving Effects of increasing hydrogen partial pressure, reducing hydrogen sulfide and ammonia content, and reducing reaction temperature
CN104611042BActive Publication Date: 2016-10-19CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2016-10-19

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Abstract

The present invention discloses a hydrogenation method for producing lubricating oil base oil through a poor-quality raw material. According to the method, a poor-quality raw material is firstly subjected to a first-stage hydrorefining reaction, and the reaction effluent is separated; the liquid enters a second-stage refining stage to carry out a deep denitrogenation and aromatic hydrocarbon saturation reaction, a gas-liquid co-current flow process and a gas-liquid counter flow process are concurrently adopted in the second stage, and the refining generated oil is subjected to hydrocracking; and the cracking tail oil is subjected to an isomerizing dewaxing and finishing reaction to obtain the lubricating oil base oil distillate. 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.
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Description

technical field

[0001] The invention discloses a method for producing lubricating oil base oil, in particular to a method for producing lubricating oil base oil by processing low-quality raw materials 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 environmental protection on the refi...

Claims

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