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A combined method for processing inferior heavy oil

A combined method and low-quality heavy oil technology, which is applied in the fields of hydrotreating process, chemical instruments and methods, and hydrocarbon oil treatment, can solve the problems of high sulfur content in products, heavy regenerator load, low yield of light oil, etc., and achieve viscosity Low, reduce the regenerator load, reduce the effect of carbon deposition

Active Publication Date: 2011-11-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this combined process can provide qualified raw materials for catalytic cracking, due to its rich aromatics, the yield of light oil in catalytic cracking is low, the amount of coke is large, the load of the regenerator is heavy, and the sulfur content of the product is high

Method used

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  • A combined method for processing inferior heavy oil
  • A combined method for processing inferior heavy oil
  • A combined method for processing inferior heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In the fixed fluidized bed reactor, the feedstock oil A (see Table 1 for its properties) enters the contact cracking unit and undergoes contact cracking with the contact agent. The contact cracking process conditions are: reaction temperature 510°C, catalyst-oil ratio 15.0, weight hourly space velocity: 5.0h -1 . The heavy oil fraction I obtained from the reaction enters the hydrotreating unit, and the carbon contact agent enters the gasification unit to undergo gasification reaction with the gasification agent. The reaction temperature of the gasification reactor is 750°C. The gasification product is prepared after the shift reaction. Hydrogen requires pure hydrogen. The distribution of contact cracking and gasification reaction products is shown in Table 2.

[0038] The mixture of heavy oil fraction I in the contact cracking unit and catalytically cracked recycle oil at a hydrogen partial pressure of 10MPa, a reaction temperature of 385°C, and a hydrogen-to-oil ratio of...

Embodiment 2

[0040] In the fixed fluidized bed reactor, the feedstock oil B (see Table 1 for its properties) enters the contact cracking unit and undergoes contact cracking with the contact agent. The contact cracking process conditions are: reaction temperature 560℃, agent-to-oil ratio 10.0, weight hourly space velocity: 20.0h -1 . The heavy oil fraction I obtained from the reaction enters the hydrotreating unit, and the carbon contact agent enters the gasification unit to undergo gasification reaction with the gasification agent. The reaction temperature of the gasification reactor is 850°C, and the gasification product is prepared after the shift reaction. Hydrogen requires pure hydrogen. The distribution of contact cracking and gasification reaction products is shown in Table 2.

[0041] The mixture of heavy oil fraction I of the contact cracking unit, FCC recycled oil, FCC slurry distillate and solvent refined oil, at a hydrogen partial pressure of 10MPa, a reaction temperature of 390°C...

Embodiment 3

[0043] In the fixed fluidized bed reactor, the feedstock oil B (see Table 1 for its properties) enters the contact cracking unit and undergoes contact cracking with the contact agent. The contact cracking process conditions are: reaction temperature 600°C, agent-oil ratio 5.0, weight hourly space velocity: 50.0h -1 . The heavy oil fraction I obtained from the reaction enters the hydrotreating unit, and enters the gasification unit with the carbon contact agent to undergo gasification reaction with the gasification agent. The reaction temperature of the gasification reactor is 900°C. The gasification product is prepared after the shift reaction. Hydrogen requires pure hydrogen. The distribution of contact cracking and gasification reaction products is shown in Table 2.

[0044] The mixture of heavy oil fraction I of the contact cracking unit, FCC recycled oil and vacuum gas oil, at a hydrogen partial pressure of 12MPa, a reaction temperature of 385°C, and a hydrogen-oil ratio of ...

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Abstract

The invention relates to a combined method for processing inferior heavy oil. The method comprises the following steps: a heavy oil raw material is reacted in a contacted cracking unit, an obtained heavy oil fraction I enters into a hydrotreating unit, a contact agent with charcoal enters into a gasification unit for a gasification reaction, the generated hydrogen enters into the hydrotreating unit, a heavy oil fraction II is obtained by a reaction in the hydrotreating unit and enters into a catalytic cracking unit, heavy cycle oil obtained by reacting is returned to the hydrotreating unit, an oil slurry is returned to the contacted cracking unit, regeneration flue gas used as a gasifying agent is returned to the gasification unit. The method of the invention is used for processing inferior heavy oil, and integrates two functions of deep processing of inferior heavy oil and reasonable utilization of excessive carbonaceous residue, so that the hydrogen balance of heavy oil processing can be realized. The combined method of the invention is capable of effectively improving the catalytic cracking raw materials and reasonably utilizing heavy cycle oil, the oil slurry and regeneration flue gas generated by the catalytic cracking apparatus, thereby the treating capacity and economic benefit of the heavy oil catalytic cracking apparatus can be enhanced.

Description

Technical field [0001] The present invention relates to a heavy oil contact cracking process in the absence of hydrogen, a gasification process of carbonaceous material, a hydrocarbon oil treatment process in the presence of hydrogen, and a catalytic cracking process of hydrocarbon oil. A method of effective combination of processes. Background technique [0002] In recent years, in response to the increasing heaviness of petroleum resources and the demand for environmentally friendly fuel oil products, major domestic and foreign petroleum companies and scientific research institutions have focused on the efficient use of heavy oil, such as how to increase the yield of liquid products and how to use inferior petroleum coke. A lot of research work. [0003] CN1165601C discloses a combined method of residual oil hydrotreating and heavy oil catalytic cracking. The method performs hydrogenation reaction on the residual oil in a hydrotreating device, and the obtained hydrogenated resid...

Claims

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Application Information

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IPC IPC(8): C10G69/00C10J3/46C10J3/54C01B3/16
Inventor 张书红王子军门秀杰李延军汪燮卿魏晓丽董建伟
Owner CHINA PETROLEUM & CHEM CORP
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