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A hydrogenation method and system for producing catalytic reforming feedstock

A technology for catalytic reforming and raw materials, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment products, and hydrocarbon oil treatment. It can solve the problems of low yield of catalytic reforming raw materials and low potential content of aromatics, and improve the economic benefits of enterprises. , reduce production costs and promote development

Active Publication Date: 2022-04-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a hydrogenation method and system for producing catalytic reforming raw materials on the basis of the prior art. Low rate and low potential content of aromatics

Method used

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  • A hydrogenation method and system for producing catalytic reforming feedstock
  • A hydrogenation method and system for producing catalytic reforming feedstock
  • A hydrogenation method and system for producing catalytic reforming feedstock

Examples

Experimental program
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Effect test

Embodiment 1

[0050] The mixed raw material of raw oil F and H enters the first hydrogenation reaction zone together with hydrogen, and reacts with the hydrofining catalyst A, and the reaction effluent enters the first high-pressure separator for gas-liquid separation, and the obtained first liquid phase stream enters The reaction is carried out in the second hydrogenation reaction zone equipped with the hydrocracking catalyst C, and the reaction product in the second hydrogenation reaction zone is recycled to the first high-pressure separator. The obtained first gas phase stream enters the third hydrogenation reaction zone equipped with hydrocracking catalyst E for reaction, and after the reaction effluent enters the second high-pressure separator, the obtained second liquid phase stream enters the fractionation tower to obtain light naphtha fraction , heavy naphtha fraction and diesel fraction, and the diesel fraction is returned to the third hydrogenation reaction zone for circulation con...

Embodiment 2

[0054] The mixed raw material of raw material oil G and H enters the first hydrogenation reaction zone together with hydrogen, and reacts with the hydrogenation catalyst B. The reaction effluent enters the first high-pressure separator for gas-liquid separation, and the obtained first liquid phase stream enters the The reaction is carried out in the second hydrogenation reaction zone equipped with the hydrocracking catalyst D, and the reaction product in the second hydrogenation reaction zone is recycled to the first high-pressure separator. The obtained first gas phase stream enters the third hydrogenation reaction zone equipped with hydrocracking catalyst E for reaction, and after the reaction effluent enters the second high-pressure separator, the obtained second liquid phase stream enters the fractionation tower to obtain light naphtha fraction , heavy naphtha fraction and diesel fraction, and the diesel fraction is returned to the third hydrogenation reaction zone for circ...

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Abstract

A hydrogenation method and system for producing catalytic reforming feedstock. The mixed feedstock rich in aromatics diesel fraction and wax oil fraction undergoes hydrofining reaction in the first hydrogenation reaction zone, and the reaction product enters the first high-pressure separator to separate the obtained The first liquid phase flow enters the second hydrogenation reaction zone, and the resulting product is returned to the first high-pressure separator, and the first gaseous phase flow obtained after separation enters the third hydrogenation reaction zone, and the obtained reaction product is separated to obtain a light naphtha fraction, The heavy naphtha fraction and the diesel fraction are recycled back to the third hydrogenation reaction zone. Adopting 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 in high yield and high selectivity, which are catalytically reformed High quality raw materials.

Description

technical field [0001] The invention relates to a hydrocarbon oil cracking method for obtaining low-boiling fractions in the presence of hydrogen, more specifically, a hydrogenation method and system for producing catalytic reforming raw materials from mixed raw materials. Background technique [0002] With the aggravation of heavy and inferior crude oil, the quality of FCC diesel is deteriorating and the output is increasing year by year. This part of FCC diesel accounts for about one third of my country's commercial diesel. At present, in order to extract more light oil products from crude oil, refineries continue to improve the processing capacity and processing depth of catalytic cracking units, resulting in further deterioration of the quality of catalytic cracking diesel oil, mainly manifested in high content of aromatics, sulfur and nitrogen, etc. High impurity content, low cetane number. At the same time, with the increasingly stringent environmental protection legi...

Claims

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Application Information

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