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A combined processing method for inferior heavy oil

A combined processing, inferior heavy oil technology, applied in the petroleum industry, hydrotreating process, processing hydrocarbon oil, etc., can solve the problems of poor utilization of deoiled asphalt, high coke, difficult to get out of high-sulfur petroleum coke, etc., to achieve easy recovery The effect of sulfur, improving the yield of light oil, and reducing the emission of SOX

Active Publication Date: 2017-01-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the coke produced by catalytic cracking of residual oil is high, and there is a large amount of SO in the regeneration flue gas X It needs to be processed, and at the same time, it needs to take heat from outside; the high-sulfur petroleum coke obtained from delayed coking is difficult to get out, and the deoiled asphalt obtained from solvent deasphalting process is not easy to use, etc.

Method used

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

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Effect test

Embodiment 1

[0056] The vacuum residue is physically separated in a supercritical fluid extraction unit. The temperature at the top of the extraction tower is 240°C and the bottom of the tower is 220°C. The solvent is mixed pentane (w (n-pentane): w (isopentane)=1 : 2), the pressure range is 4 ~ 12MPa. Obtain yield after extraction is 40% of the extracted oil and 60% of the raffinated oil. The mass percentage of saturated and aromatic components in the extracted oil was 82.1%, the mass percentage of asphaltene was <0.1%, the residual carbon was 6.1%, and the content of metal (Ni+V) was 14.1 μg / g.

[0057] The extracted oil enters the catalytic cracking unit, and the process conditions are: reaction temperature 520°C, agent-to-oil ratio 7, water-to-oil ratio 0.05, reaction time 3s, and the distribution of the obtained products is shown in Table 2. The spent agent obtained after the catalytic cracking reaction enters the first regenerator for oxygen-poor regeneration. The process conditions...

Embodiment 2

[0061] The vacuum residue is physically separated in a supercritical fluid extraction unit, the temperature at the top of the extraction tower is 230°C, the bottom of the tower is 210°C, and the solvent is mixed pentane (w (n-pentane):w (isopentane)=1 : 1), the pressure range is 4 ~ 12MPa. Obtain yield after extraction is 38% extract oil and 62% raffinate oil. The mass percentage of saturated and aromatic components in the extracted oil is 83.5%, the mass percentage of asphaltene is <0.1%, the residual carbon is 5.8%, and the content of metal (Ni+V) is 10.2 μg / g.

[0062] The extracted oil enters the catalytic cracking unit. The process conditions are: reaction temperature 530°C, agent-to-oil ratio 8, water-to-oil ratio 0.05, reaction time 2.5s. The distribution of the obtained products is shown in Table 2. The spent agent obtained after the catalytic cracking reaction enters the first regenerator for oxygen-poor regeneration. The process conditions are: the temperature in th...

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Abstract

The invention discloses a tinpot heavy oil combination processing method which is a processing method integrating the steps of heavy oil supercritical fluid extraction, heavy oil fluid catalytic cracking, tinpot heavy oil contact cracking and gasification regeneration are organically combined. By adopting the combination mode, the tinpot heavy oil can be processed; carbon, hydrogen and sulfur in residual oil can be efficiently utilized in an environmentally friendly way, and light oil or fuel gases with a high additional value can be obtained.

Description

technical field [0001] The invention belongs to a method for processing inferior heavy oil. More specifically, it is a fluidized processing method that organically combines heavy oil supercritical fluid extraction, heavy oil catalytic cracking, inferior heavy oil contact cracking and gasification regeneration. Background technique [0002] In recent years, petroleum resources have become increasingly heavy, and the content of residual carbon, sulfur and metals has increased. From the perspective of carbon and hydrogen balance, the traditional heavy oil processing technology is divided into two technical routes: hydrogenation and decarbonization. Whether it is hydrogenation technology or decarbonization technology, the purpose is to change the ratio of hydrocarbons in residual oil, recombine hydrocarbons, and process residual oil into light products with higher hydrogen content. Decarbonization processes include catalytic cracking, delayed coking, solvent deasphalting, etc....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/00C10G69/00
CPCC10G55/00C10G69/00
Inventor 张书红王子军李延军李子锋任磊
Owner CHINA PETROLEUM & CHEM CORP