A kind of hydrogenation method of animal and vegetable oil and catalytic diesel oil

A technology for animal and vegetable oil and catalytic diesel oil, which is applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc.

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the traditional liquid phase circulation hydrogenation process, it is difficult to be directly used to treat catalytic cracking diesel oil

Method used

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  • A kind of hydrogenation method of animal and vegetable oil and catalytic diesel oil

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Embodiment Construction

[0028] The method for hydrogenating animal and vegetable oils and catalytic diesel oil of the present invention will be described in detail below through specific examples.

[0029] Such as figure 1 As shown, the flow process of the animal and vegetable oil and catalytic diesel hydrogenation method of the present invention is as follows: hydrogen enters the gas phase circulation hydrogenation reactor 6 from the bottom of the reactor through the pipeline 5, and the animal and vegetable raw material oil first enters the liquid phase circulation hydrogenation reaction through the pipeline 1 The low-pressure heat exchanger 2 of the device 13 exchanges heat with the liquid-phase hydrogenation effluent, and then passes through the raw oil pump 3, and after further heating, enters the gas-phase circulating hydrogenation reactor 6 through the pipeline 4 under the condition of gas-liquid countercurrent The hydrogenation refining and hydrogenation modification isomerization depreciation...

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Abstract

The present invention discloses an animal-vegetable oil and catalytic diesel fuel hydrogenation method. According to the method, animal-vegetable oil is subjected to heat exchange with a liquid-phase hydrogenation effluent through a low-pressure heat exchanger, and then enters a gas-phase circulation hydrogenation reactor and is subjected to countercurrent contact with hydrogen gas so as to carry out a hydrorefining and hydro-upgrading isodewaxing reaction; the obtained liquid generated oil and catalytic diesel fuel are subjected to saturated hydrogen dissolving, and then enter a liquid-phase hydrogenation reactor to carry out a deep hydrodesulfurization reaction; and one part of the liquid-phase hydrogenation effluent is subjected to pressure reducing through a pressure reducing valve and then enters the low-pressure heat exchanger, and the other part is recycled to the hydrogen mixing tank in front of the liquid-phase hydrogenation reactor. With the method of the present invention, the hydrotreating on the two raw materials with different characters is achieved, and the characteristic that the animal-vegetable oil has the high hydrogen dissolving capacity after the upgrading isomerization is utilized to process the catalytic cracking diesel fuel through the liquid-phase hydrogenation reactor so as to produce the low-sulfur clean diesel fuel.

Description

technical field [0001] The invention relates to a method for hydrogenation of animal and vegetable oils and catalytic diesel oil, in particular to a hydrogenation method for producing high cetane number clean diesel oil by processing vegetable oil and catalytic diesel oil with a gas-phase cycle hydrogenation and liquid-phase hydrogenation combined device. Background technique [0002] With the gradual depletion of oil resources, the proportion of heavy and low-quality crude oil processed by refineries is increasing year by year. Therefore, the proportion of secondary processed diesel oil, especially catalytic diesel oil, is gradually increasing in the refinery processing process. It contains a large amount of aromatic hydrocarbons, and the cetane number is very low. Even after hydrofining, it is very slow to meet the cetane number requirements of diesel oil. At the same time, as the world's oil reserves are getting less and less, the utilization of renewable resources such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/04
CPCC10G65/043
Inventor 柳伟刘继华杜艳泽王凤来刘昶秦波张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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