Composite process for treatment of inferior residual oil

A combined process and residual oil technology, which is applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of frequent catalyst replacement, low catalyst utilization rate, poor fluidity, etc., and achieve wide raw material adaptability and process optimization Optimize and ensure the effect of product quality

Active Publication Date: 2009-04-29
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

When the process adopts the fluidized bed process to process the deoiled asphalt, because the deoiled asphalt is rich in a large amount of macromolecular polycyclic aromatic hydrocarbons, colloids and asphaltenes, the viscosity is high, and the fluidity is poor, so that the cat

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  • Composite process for treatment of inferior residual oil

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Embodiment 1

[0038] This example is a reaction process of residual oil hydrogenation using a combined process of solvent deasphalting, ebullating bed, suspension bed and catalytic cracking. Firstly, the residual oil raw material is uniformly mixed with a mixed solvent composed of butane, pentane and a small amount of <145°C naphtha fraction generated by suspension bed hydrogenation in a static mixer, and then enters a two-stage solvent deasphalting device to obtain DAO and deoiled asphalt, DAO is preheated, mixed with hydrogen and sent to the ebullating bed hydroprocessing unit, and the hydrogenation reaction is carried out under the conventional ebullating bed hydrogenation catalyst and process conditions, and the heteroatoms and residues such as sulfur and nitrogen in the raw material are removed. Carbon, the hydrogenation products are separated to obtain gasoline, diesel and hydrogenated tail oil; the ebullated bed hydrogenated tail oil enters the heavy oil catalytic cracking unit for re...

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Abstract

The invention discloses a combined process method for treating inferior residual oil. The method comprises the following steps: a residual oil material enters a solvent deasphalting device to obtain DAO and deoil asphalt; the obtained DAO enters a hydrogenation device of a boiling bed and is treated to obtained a lightweight distillation fraction and hydrogenated tail oil; the hydrogenated tail oil enters a catalytic cracking device and is treated to obtain a lightweight distillation fraction and oil slurry; at least partial oil slurry and the deoil asphalt are mixed, enter a hydrogenation device of a suspension bed and are treated to obtain a lightweight distillation fraction and unconverted tail oil, wherein the unconverted tail oil circularly returns the solvent deasphalting device; and the lightweight distillation fraction and the DAO are mixed and enter the hydrogenation device of the boiling bed. The combined process course organically combines a decarbonization process and a hydrogenation process; and according to different properties of raw materials, a corresponding process and operation condition is adopted so as to maximize conversion of the residual oil material while minimizing equipment investment.

Description

technical field [0001] The invention relates to a method for producing light distillate oil from inferior residual oil, in particular to a combined method for producing light distillate oil by organically combining solvent deasphalting, fluidized bed hydrogenation, catalytic cracking and suspension bed hydrocracking processes. Background technique [0002] With the rapid development of the global economy, the demand for light and clean fuel oil is increasing rapidly, and the quality of crude oil is getting worse and worse, and the content of heavy components is getting higher and higher. How to effectively use non-renewable petroleum resources to achieve maximum lightness of residue Quality, production of high-value petroleum products is an important issue we are currently facing. [0003] The residual oil processing technology includes two types of processes: hydrogenation and decarbonization. The decarbonization process mainly includes solvent deasphalting, coking, heavy o...

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Application Information

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IPC IPC(8): C10C1/18C10G65/10
Inventor 贾丽胡长禄杨涛叶跃元葛海龙刘建锟王岩
Owner CHINA PETROLEUM & CHEM CORP
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