Hydrogenation method for lubricating base oil production from inferior raw materials
A technology for lubricating base oils and low-quality feedstock oils, applied in lubricating compositions, hydrotreating processes, petroleum industry, etc., can solve the problems of not improving the product quality of hydrocracking units, reducing equipment investment and operating costs, and achieving The effect of reducing the content of hydrogen sulfide and ammonia, increasing the partial pressure of hydrogen in the system, and reducing the reaction temperature
Active Publication Date: 2016-10-26
CHINA PETROLEUM & CHEM CORP +1
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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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Embodiment 1
[0046] use figure 1 In the process flow shown, the hydrocracking in the third stage is a one-pass process, and all the hydrocracking tail oil undergoes isomerization dewaxing reaction. Catalyst A is loaded in the first section, and catalyst A is loaded in the second section. The upper part of the first-stage reaction zone adopts gas-liquid parallel flow reaction, and the lower part adopts gas-liquid countercurrent reaction, and the catalyst loading volume ratio of the parallel flow section and the countercurrent section is 1:1.
Embodiment 2
[0048] use figure 1 In the process flow shown, both the first section and the second section are filled with catalyst B, and the others are the same as in Example 1.
Embodiment 3
[0050] use figure 1 In the process flow shown, catalyst A is filled in the first section, catalyst B is filled in the second section, and the others are the same as in Example 1.
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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 Hydrogenation method of the present invention, a poor-quality raw material, a poor-quality raw material firstly enters a first-stage reaction zone to carry out a hydrorefining reaction, a co-current flow process and a counter flow process are concurrently adopted in the first stage, the generated oil obtained in the first stage enters a second-stage reaction zone to carry out a hydrogenation reaction, and the second-stage reaction effluent is subjected to hydrocracking; and the cracking tail oils are 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 operation period of the device can be increased and the poor-quality raw material can be processed, or the processing capacity of the device can be increased 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 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 environm...
Claims
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IPC IPC(8): C10G67/02C10M177/00
Inventor 白振民刘继华孙立刚王平
Owner CHINA PETROLEUM & CHEM CORP
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