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A light-weight treatment process and system for inferior raw material oil

A technology of inferior raw material oil and treatment process, which is applied in the direction of hydrotreating process, hydrocarbon oil treatment products, treatment of hydrocarbon oil, etc., to reduce the occurrence of coking and realize the effect of long-term stable operation

Active Publication Date: 2022-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patents such as CN108018080 and CN 108138057 disclose several heavy oil processing combination processes, which are basically simple combinations of existing processing technologies, and cannot effectively carry out targeted processing according to the characteristics of different fractions in heavy oil

Method used

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  • A light-weight treatment process and system for inferior raw material oil
  • A light-weight treatment process and system for inferior raw material oil

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Experimental program
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Embodiment 1

[0050] Embodiment 1 adopts the present invention figure 1 As shown in the process flow, the solvent A used in the solvent deasphalting unit is a mixed solvent of n-butane and n-pentane, wherein the weight fraction of n-pentane is 50%, the extraction temperature is 135°C, the pressure is 4.0Mpa, and the volume ratio of the agent to oil is 5.0; The solvent B used in the gum unit is a compound solvent of propane and dioctadecyl maleate, the content of propane is 95wt%; the extraction temperature is 115°C, the pressure is 10Mpa, and the volume ratio of agent to oil is 6.0. Two ebullated bed hydrogenation reactors are set in the ebullated bed hydrogenation reaction zone, which are connected in series, the reaction pressure is 16MPa, the volume ratio of hydrogen to oil is 800, the reaction temperature of the first reactor is 410℃, and the liquid hourly volume space velocity is 0.35h. -1 , the reaction temperature of the second reactor is 420°C, and the volumetric space velocity of t...

Embodiment 2

[0052] Embodiment 2 adopts the present invention figure 1 As shown in the process flow, the solvent A used in the solvent deasphalting unit is n-butane solvent, the extraction temperature is 125°C, the pressure is 4.0Mpa, and the volume ratio of the agent to oil is 5.0; the solvent B used in the degumming unit is propane and maleic acid. Dioctadecyl ester compound solvent, the propane content is 99wt%; the extraction temperature is 110°C, the pressure is 7Mpa, and the volume ratio of the agent to oil is 10.0. Two ebullated bed hydrogenation reactors are set in the ebullated bed hydrogenation reaction zone, which are connected in series, the reaction pressure is 16MPa, the volume ratio of hydrogen to oil is 800, the reaction temperature of the first reactor is 405℃, and the liquid hourly volume space velocity is 0.35h. -1 , the reaction temperature of the second reactor is 420°C, and the volumetric space velocity of the liquid is 0.4h. -1 . The hydrotreating reaction zone ado...

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Abstract

The invention provides a light-weight treatment process and system for inferior raw material oil. In the treatment process, firstly, the inferior raw material oil enters the solvent deasphalting unit for treatment to obtain deasphalted oil and deoiled asphalt; the deasphalted oil enters the degumming unit for treatment. Finally, the first light fraction and the first heavy fraction are obtained; deoiled asphalt, optional catalytic diesel oil and hydrogen are mixed and then enter the ebullated bed hydrogenation reaction zone for reaction, and the reaction effluent is separated to obtain the second light fraction and unconverted tail oil; the first heavy fraction and the second light fraction are mixed with hydrogen and enter the hydrotreating reaction zone for reaction; the first light fraction and the hydrogenation reaction effluent are mixed and then enter the catalytic cracking reaction zone for reaction, and the reaction effluent is separated to obtain Dry gas, liquefied gas, catalytic gasoline, catalytic diesel, catalytic heavy oil. The process realizes the organic combination of the decarburization process and the hydrogenation process in the lightening of inferior raw material oil, realizes the lightening of inferior raw material oil to the greatest extent, and greatly prolongs the operation period of the device at the same time.

Description

technical field [0001] The present aspect belongs to the technical field of petrochemical industry, and relates to a process and system for lightening inferior raw material oil. Background technique [0002] At present, the focus of the refining industry is how to convert heavy heavy oil into light oil as much as possible, so as to maximize the efficiency of the refinery. Decarburization and hydrogenation are the two most important ways to lighten heavy oil at present. The decarburization process mainly includes coking process and solvent deasphalting process. The hydrogenation process mainly includes fixed bed hydrogenation, ebullated bed hydrogenation and other processes. Each processing technology has its own advantages and disadvantages. For example, the coking process has a low degree of harshness on the properties of the raw materials, but its oil properties are poor, and at the same time, a large amount of low value-added high-sulfur coke will be produced. The fixed b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2400/02C10G2400/04C10G2400/26C10G2300/1077C10G2300/107Y02P20/54
Inventor 仝玉军陈博刘玲孟兆会葛海龙
Owner CHINA PETROLEUM & CHEM CORP