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A hydrogenation method and system for producing chemical materials

A chemical industry and hydrogenation reaction technology, applied in the field of hydrocarbon oil cracking, can solve the problems of low yield of heavy naphtha fraction, low aromatic content and lower tail oil quality, and improve the quality of hydrogenated wax oil fraction and aromatic content High, high hydrogen content effect

Active Publication Date: 2022-03-11
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 yield of heavy naphtha fraction and latent content of aromatics in the product, as well as the decline of tail oil quality when processing the mixed raw materials mixed with a large proportion of aromatic-rich diesel fraction in the prior art

Method used

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  • A hydrogenation method and system for producing chemical materials
  • A hydrogenation method and system for producing chemical materials
  • A hydrogenation method and system for producing chemical materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The mixed raw material of the raw material oil E and the raw oil G enters the first hydrogenation reaction zone together with hydrogen, sequentially contact with the hydrothermal catalyst A and hydrocracking catalyst C, and its reaction effluent enters the first high pressure separator for gas Separation, the first liquid phase stream part circulates back to the first hydrogenation reaction zone to mix the feedstock as a fresh raw material, the circulating first liquid phase stream is 10% by weight of the fresh raw material, the remainder of the first liquid phase logistics enters the first Two high pressure separators. The resulting first gas phase stream enters the second hydrogenation reaction zone equipped with a hydrocracking catalyst D, and the reaction effluent enters the second high pressure separator for gas-liquid separation, separating the obtained second liquid phase stream into the fractionation column, diacedent The light stone brain distraction, heavy stone b...

Embodiment 2

[0052] The mixed raw material of the raw material oil F and the raw material oil G enters the first hydrogenation reaction zone together with hydrogen, sequentially contact with the hydrothermal catalyst B and the hydrocracking catalyst C, and the reaction effluent enters the first high pressure separator for gas The liquid is separated, and the resulting portion of the first liquid phase stream is isolated into the second high pressure separator. The resulting first gas phase stream enters the second hydrogenation reaction zone equipped with a hydrocracking catalyst D, and the reaction effluent enters the second high pressure separator for gas-liquid separation, separating the obtained second liquid phase stream into the fractionation column, diacedent The light stone brain distraction, heavy stone brain distraction, diesel fraction and tail oil fraction are obtained, and the diesel fraction returns to the second hydrogenation reaction zone for recycling, and the circulating dies...

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Abstract

A hydrogenation method and system for producing chemical materials. The mixed raw material rich in aromatics diesel fraction and wax oil fraction enters the first hydrogenation reaction zone, and successively contacts with the hydrofinishing catalyst and the hydrocracking catalyst I to react, and the reaction The effluent is separated by the first high-pressure separator, and the obtained first gas phase stream enters the second hydrogenation reaction zone, and reacts with the hydrocracking catalyst II, and the obtained first liquid phase stream is separated from the reaction effluent of the second hydrogenation reaction zone Separation is carried out together to obtain light naphtha fraction, heavy naphtha fraction, diesel fraction and tail oil fraction, and the diesel fraction is recycled back to the second hydrogenation reaction zone. The method and system provided by the present invention can process and blend a large proportion of wax oil fractions rich in aromatics diesel fractions, and obtain heavy naphtha fractions with high aromatics potential content and tail oil with high hydrogen content in high yield and high selectivity fraction.

Description

Technical field [0001] The present invention relates to a method of obtaining a hydrocarbon oil pendulum solution having a low boiling fraction in the case of hydrogen, and is more specifically, is a hydrotion method and system for producing chemicals by mixing feedstocks. Background technique [0002] With the abundance of crude oil, the inferiority process is intensified, the quality of catalytic cracking diesel is increasing, and the output is increasing year by year, and this part of the catalytic cracking diesel accounts for about one third of my country's commodity diesel share. At present, in order to extract more light oil from crude oil, refinery continuously improves the processing capacity and processing depth of catalytic cracking device, resulting in further deterioration of catalytic cracking diesel, mainly in an aromatic hydrocarbon content, sulfur and nitrogen, etc. High impurity content, low hexadecane. At the same time, with the increasingly stricter of environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
CPCC10G67/14C10G2300/1037C10G2300/1059C10G2300/1055C10G2300/202C10G2300/201C10G2400/04C10G2300/70
Inventor 赵广乐赵阳莫昌艺毛以朝董松涛
Owner CHINA PETROLEUM & CHEM CORP
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