Fluidized bed hydrogenation and heavy oil catalytic cracking combining method and hydrogenation catalyst

A hydrogenation catalyst and heavy oil catalysis technology, which is applied in the field of heavy oil deep processing, can solve the problems of poor cracking performance, low cracking rate, and low economic benefits, and achieve the effects of small cracking rate, reduced cracking rate, and extended operation cycle

Inactive Publication Date: 2017-06-13
SHANGHAI HOTO PETROCHEM ENG
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  • Application Information

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Problems solved by technology

[0006] Aiming at the problems of poor cracking performance and low economic benefits in the existing residual oil hydrotreating and catalytic cracking combined processing technology, the embodiment of the present invention provides a combined method of ebullated bed hydrogenation and heavy oil catalytic cracking and a hydrogenation catalyst, It has the characteristics of low cracking rate in the hydrogenation stage, which can greatly improve product distribution, high production efficiency and effectively avoid waste of resources

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  • Fluidized bed hydrogenation and heavy oil catalytic cracking combining method and hydrogenation catalyst
  • Fluidized bed hydrogenation and heavy oil catalytic cracking combining method and hydrogenation catalyst
  • Fluidized bed hydrogenation and heavy oil catalytic cracking combining method and hydrogenation catalyst

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Embodiment 1

[0044] A new fluidized bed hydrogenation and heavy oil catalytic cracking combined process, the process flow is as follows figure 2 shown. The combined process of fluidized bed hydrogenation and heavy oil catalytic cracking is used to process inferior heavy oil. The specific steps are:

[0045] The raw material of heavy oil, whose properties are shown in Table 1, is mixed with catalytic cracking oil refining, mixed with hydrogen, enters the ebullating bed hydrotreating reactor from the lower part, and contacts with a special hydrogenation catalyst. The catalyst composition is shown in Table 2, forming an ebullating fluidized bed. The hydrogenation saturation reaction of polycyclic aromatic hydrocarbons is carried out, and the reaction conditions of ebullated bed heavy oil hydrotreating are shown in Table 3, and the reactions of hydrodemetallization, hydrodesulfurization, hydrodenitrogenation and hydrodecarbonization are carried out at the same time.

[0046] Table 1. Propert...

Embodiment 2

[0063] The process flow, catalyst and raw materials of Example 2 are the same as in Example 1. The reaction conditions of ebullated bed hydrotreating are shown in Table 7, the properties of products of ebullated bed heavy oil hydrotreating are shown in Table 8, and the reaction conditions of catalytic cracking are shown in Table 9. The catalytic cracking products The distribution is shown in Table 10.

[0064] Table 7. Ebullated bed hydrotreating reaction conditions:

[0065]

[0066]

[0067] Table 8. Properties of ebullated bed heavy oil hydrotreating products:

[0068]

[0069] Table 9. Catalytic cracking reaction conditions:

[0070] project value project value Reaction temperature (°C) 550～580 Reaction pressure (kPaG) 80～150

[0071] Table 10. FCC product distribution:

[0072] project value Dry gas (w%) 2.35 Liquid hydrocarbon (w%) 22.5 Gasoline fraction (38~187℃,w%) 46.6 Diesel fraction (187~370...

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Abstract

The embodiments of the present invention provide a combined method of ebullating bed hydrogenation and heavy oil catalytic cracking and a hydrogenation catalyst. The heavy oil raw material and hydrogen are subjected to hydrogenation reaction under the catalysis of hydrogenation catalyst, the hydrogenation reaction product is subjected to gas-liquid separation, the hydrogen in the separated gas phase is recycled for hydrogenation reaction, and the separated liquid phase is further catalyzed Cracking reaction, recovering the cracking products in the cracking products, mixing and recycling the recycled oil and heavy oil raw materials in the cracking products for hydrogenation reaction; the hydrogenation catalyst is a particle supported by silicon-aluminum oxide, with a particle size range of 0-300 μm, Directed hydrogenation of aromatic rings in heavy oil molecules, including gums, can be performed. The technical scheme of the invention improves the quality of catalytic cracking raw materials, improves the distribution of products, greatly reduces the oil slurry yield of catalytic cracking, or does not produce oil slurry, and can greatly improve the economic benefits of the combined process.

Description

technical field [0001] The invention belongs to the technical field of deep processing of heavy oil (residual oil), and in particular relates to a combined method of fluidized bed hydrogenation and catalytic cracking of heavy oil, and also relates to a hydrogenation catalyst used in the combined method. Background technique [0002] In recent years, the deep processing of residual oil has become one of the focuses of refining companies to improve their competitiveness. The combination of residual oil hydrogenation and catalytic cracking is currently a popular combined treatment process. Hydrogenation of residual oil can reduce the content of sulfur, nitrogen, metal and other impurities and residual carbon in residual oil, and provide raw materials that meet the requirements of catalytic cracking feed. At the same time, the distribution of catalytic cracking products is significantly improved. The combination of the two can give full play to their respective advantages. So a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/04B01J23/888
CPCC10G69/04B01J23/888C10G2300/107C10G2300/1077C10G2300/201C10G2300/202C10G2300/205C10G2300/70
Inventor 张韩张明会杜如意
Owner SHANGHAI HOTO PETROCHEM ENG
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