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Method for producing high-octane petrol by inferior diesel

A technology for high-octane gasoline and low-quality diesel, which is used in hydrocarbon oil cracking, petroleum industry, processing of hydrocarbon oil, etc. The effect of low cost, easy operation and simple installation process

Active Publication Date: 2011-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, it is to solve the problems of low dry point of low-quality diesel raw materials and low octane number of gasoline products obtained in the prior art when processing low-quality diesel oil to produce gasoline

Method used

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  • Method for producing high-octane petrol by inferior diesel
  • Method for producing high-octane petrol by inferior diesel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw material oil D enters the hydrogenation reactor together with hydrogen, and in turn reacts with the hydrorefining catalyst B in the first reaction zone and the hydrocracking catalyst C in the second reaction zone, and the effluent after the reaction enters the high pressure without any intermediate separation. Separator, low-pressure separator, after cooling and separation, the hydrogen-rich gas is recycled, and the liquid product enters the fractionation system and is separated into gasoline fraction and diesel fraction. The saturation depth of aromatic hydrocarbons in the reaction zone, that is, compared with the diesel feedstock oil, the saturation rate of bicyclic and more than bicyclic aromatic hydrocarbons in the reaction effluent of the first reaction zone is 69.7%, and is based on the reaction effluent of the first reaction zone. Based on the liquid component, the monocyclic aromatic hydrocarbon content was 51.6% by mass. The reaction conditions are show...

Embodiment 2

[0029] The feed oil D enters the hydrogenation reactor together with hydrogen, and in turn reacts with the hydrorefining catalyst A in the first reaction zone and the hydrocracking catalyst C in the second reaction zone, and the reacted effluent enters the high pressure without any intermediate separation. Separator, low-pressure separator, after cooling and separation, the hydrogen-rich gas is recycled, and the liquid product enters the fractionation system and is separated into gasoline fraction and diesel fraction. The loading volume ratio of hydrotreating catalyst and hydrocracking catalyst is 1:1. The saturation depth of aromatic hydrocarbons in the reaction zone, that is, compared with the diesel feedstock oil, the saturation rate of bicyclic and more than bicyclic aromatic hydrocarbons in the reaction effluent of the first reaction zone is 54.9%, and is based on the reaction effluent of the first reaction zone. Based on the liquid component, the monocyclic aromatic hydro...

Embodiment 3

[0032] The raw material oil E enters the hydrogenation reactor together with hydrogen, and in turn reacts with the hydrorefining catalyst A in the first reaction zone and the hydrocracking catalyst C in the second reaction zone, and the effluent after the reaction enters the high pressure without any intermediate separation. Separator, low pressure separator, after cooling and separation, the hydrogen-rich gas is recycled, and the liquid product enters the fractionation system and is separated into gasoline fraction and diesel fraction. The saturation depth of aromatic hydrocarbons in the reaction zone, that is, compared with the diesel feedstock oil, the saturation rate of bicyclic and more than bicyclic aromatic hydrocarbons in the reaction effluent of the first reaction zone is 55.0%, and is based on the reaction effluent of the first reaction zone. Based on the liquid component, the monocyclic aromatic hydrocarbon content was 51.8% by mass. The reaction conditions are show...

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Abstract

The invention relates to a method for producing high-octane petrol by inferior diesel. A mixture of diesel raw oil and hydrogen gas reacts with a hydrorefining catalyst in a first reaction zone and a hydrocracking catalyst in a second reaction zone in sequence, the saturation depth of arene in the first reaction zone is controlled, i.e. compared with diesel raw oil, the saturation ratio of two-ring and more than two-ring arene in reaction effluent of the first reaction zone is more than 50%, and taking the liquid components of the reaction effluent of the first reaction zone as a reference, the content of single-ring arene is increased to more than 40% by mass. Low-sulfur high-octane petrol can be produced from inferior diesel fractions with high arene content by using the single-pass process flow and a method of properly controlling reaction depth, and meanwhile, a low-sulfur clean diesel blend component can also be produced.

Description

technical field [0001] The present invention relates to a method for cracking hydrocarbon oil in the presence of hydrogen in order to obtain a low-boiling fraction, more particularly, a method for producing high-octane gasoline from inferior diesel oil. Background technique [0002] With the development of heavy crude oil and the rapid growth of market demand for light oil products, in my country, the processing capacity of catalytic cracking technology, which is the main technology of heavy oil lightening, has developed rapidly. my country's catalytic cracking processing capacity accounts for about one time of crude oil. About one-third of the processing capacity, ranking the forefront of the world. However, with the improvement of catalytic cracking processing capacity, the output of catalytic diesel in my country has increased year by year, and the quality has deteriorated, mainly manifested in high content of aromatics, sulfur, nitrogen and olefins, low cetane number and ...

Claims

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Application Information

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IPC IPC(8): C10G65/12C10G49/04C10G47/20
Inventor 张毓莹胡志海蒋东红辛靖王子文聂红
Owner CHINA PETROLEUM & CHEM CORP
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