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Inferior raw oil lightening treatment process and system

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

Active Publication Date: 2021-07-16
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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  • Inferior raw oil lightening treatment process and system
  • Inferior raw oil lightening treatment process and system

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Effect test

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 solvent 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 solvent to oil is 6.0. Two ebullating bed hydrogenation reactors are installed in the ebullating bed hydrogenation reaction zone, connected in series, the reaction pressure is 16MPa, the hydrogen to oil volume ratio is 800, the reaction temperature of the first reactor is 410°C, and the liquid hourly volume space velocity is 0.35h -1 , the reaction temperature of the second reactor is 420°C, and the liquid hourly volume space velocity...

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 solvent to oil is 5.0; the solvent B used in the degumming unit is propane and maleic acid Dioctadecyl ester compound solvent, propane content is 99wt%; extraction temperature is 110°C, pressure is 7Mpa, volume ratio of agent to oil is 10.0. Two ebullating bed hydrogenation reactors are set up in the ebullating bed hydrogenation reaction area, connected in series, the reaction pressure is 16MPa, the hydrogen oil volume ratio is 800, the reaction temperature of the first reactor is 405°C, and the liquid hourly volume space velocity is 0.35h -1 , the reaction temperature of the second reactor is 420°C, and the liquid hourly volume space velocity is 0.4h -1 . The hydroprocessing reaction zone adopts a fixed-bed reactor with an average b...

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Abstract

The invention provides an inferior raw oil lightening treatment process and system. The treatment process comprises the following steps: firstly, treating inferior raw oil in a solvent deasphalting unit to obtain deasphalted oil and deoiled asphalt; feeding the deasphalted oil into a degumming unit to be treated to obtain a first light fraction and a first heavy fraction; mixing and feeding the deoiled asphalt, optional catalytic diesel oil and hydrogen into a fluidized bed hydrogenation reaction zone for reaction, and separating a reaction effluent to obtain a second light fraction and unconverted tail oil; mixng the first heavy fraction and the second light fraction with hydrogen, and then feeding an obtained mixture into a hydrotreating reaction zone for reaction; mixing and feeding the first light fraction and the hydrogenation reaction effluent into a catalytic cracking reaction zone for reaction, and separating the reaction effluent to obtain dry gas, liquefied gas, catalytic gasoline, catalytic diesel oil and catalytic heavy oil. According to the process, organic combination of a decarburization process and a hydrogenation process in lightening of the inferior raw oil is realized, lightening of the inferior raw oil is realized to the greatest extent, and meanwhile, the running period of a device is greatly prolonged.

Description

technical field [0001] This aspect belongs to the field of petrochemical technology, 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 products as much as possible, so as to maximize the benefits of the refinery. Decarbonization and hydrogenation processes are currently the two most important ways to lighten heavy oil. Decarbonization processes mainly include coking process and solvent deasphalting process. Hydrogenation processes mainly include fixed bed hydrogenation and ebullating bed hydrogenation. However, Each processing technology has its advantages and disadvantages. For example, the coking process is very low in the raw material properties, but its oil properties are poor, and a large amount of low-value-added high-sulfur coke will be produced at the same time. Fixed-bed hydrogenation produces better oil properties...

Claims

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Application Information

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Patent Type & Authority Applications(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
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