Method for producing high-quality fuel oil by heavy oil hydrocracking

A heavy oil hydrogenation and hydrocracking technology, which is applied in the production of high-quality fuel oil and heavy oil hydrocracking to produce high-quality fuel oil, can solve the problems of low product quality and low hydrogenation capacity, and achieve reasonable process and high yield Efficiency and high-quality, simple effects

Active Publication Date: 2015-03-04
SHAANXI YANCHANG PETROLEUM GRP
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Problems solved by technology

Due to the difference in the hydrogenation and cracking reaction capabilities of the suspended bed hydrogenation reactor and the ebullated bed hydrogenation reactor in

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  • Method for producing high-quality fuel oil by heavy oil hydrocracking

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[0024] The method for producing high-quality fuel oil by hydrocracking of heavy oil of the present invention comprises the following steps:

[0025] a) The heavy oil is mixed with the suspended bed hydrocracking catalyst and hydrogen and enters the suspended bed hydrocracking reactor; the operating pressure of the suspended bed hydrocracking reactor is 12-20MPa, the temperature is 400-500°C, and the volume ratio of hydrogen to oil is 500-1500, The amount of catalyst added is 0-3.0%, and the space velocity is 0.3-1.0h -1 ; The suspended bed hydrocracking reactor has no internal components, and the fluid passes through the suspended bed hydrocracking reactor in a plug flow manner. The heavy oil is atmospheric / vacuum residual oil, medium-low temperature coal tar, coker wax oil or heavy heavy oil. The suspended bed hydrocracking is a solid powder catalyst, an oil-soluble catalyst or a water-soluble catalyst used for cracking heavy and inferior oil.

[0026] b) The reactant of st...

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Abstract

The invention discloses a method for producing high-quality fuel oil by heavy oil hydrocracking. The method comprises the following steps: heavy oil, a catalyst and hydrogen gas are mixed to enter a plug-flow suspension bed hydrocracking reactor; the gas-liquid mixture product is separated in a hot high-pressure separator and a cold high-pressure separator, the gas-phase product directly enters a two-stage fixed-bed reactor, and the liquid-phase product enters a vacuum distillation tower; the residues on the bottom of the vacuum tower are directly discharged out of the device, and the gas phase enters a fixed-bed reactor; and the fixed bed reaction product is subjected to hydrogen gas and light hydrocarbon separation to enter a fractionating tower so as to obtain high-grade gasoline and diesel, and the bottom oil is circulated to enter the fixed-bed reactor. By combining the plug-flow suspension bed, fixed-bed reactor and on-line hydrogenation, the method enhances the adaptability of the raw materials and the yield and quality of the liquid product, and lowers the reaction energy consumption and operation difficulty.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a method for producing high-quality fuel oil, in particular to a method for producing high-quality fuel oil by hydrocracking heavy oil. Background technique [0002] With the development of the global economy, the demand for energy is increasing day by day. Especially in the face of China's increasing shortage of oil resources, crude oil tends to be heavy, oil products are constantly upgraded, and environmental protection requirements are becoming increasingly stringent. How to convert heavy oil into light liquid fuel efficiently and cleanly has become a challenge for the petrochemical industry. It is an important topic and an important direction for oil refining enterprises to improve their efficiency in the future. The current relatively mature residual oil hydrogenation technology is fixed-bed residual oil hydrogenation, but the fixed bed has high requirements for raw oil....

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Application Information

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IPC IPC(8): C10G67/00
CPCC10G67/00
Inventor 李大鹏王明峰霍鹏举黄传峰韩磊李晓宏李伟杨永佳蒋中山王永娟王孟艳
Owner SHAANXI YANCHANG PETROLEUM GRP
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