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A method for producing light aromatics and clean fuel oil by hydrocracking in a moving bed

A light aromatics, hydrocracking technology, applied in chemical instruments and methods, treatment of hydrocarbon oil, through aromatics hydrorefining, etc. problems, to achieve the effect of reducing excessive hydrogenation, reducing chemical hydrogen consumption, and improving BTX yield

Active Publication Date: 2017-07-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This leads to insufficient cracking depth of catalytic cracking diesel oil, and at the same time, the gasoline components produced by cracking will be excessively hydrogenated, resulting in low octane number of products and high hydrogen consumption

Method used

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  • A method for producing light aromatics and clean fuel oil by hydrocracking in a moving bed
  • A method for producing light aromatics and clean fuel oil by hydrocracking in a moving bed
  • A method for producing light aromatics and clean fuel oil by hydrocracking in a moving bed

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Embodiment 1

[0037] According to the method of the present invention, catalytic cracking diesel oil is processed to produce light aromatics and clean fuel oil through hydrocracking, and the fixed-bed hydrogenation reactor and the moving-bed hydrocracking reactor are filled with FDS-1 catalyst and hydrocracking catalyst I respectively. The reaction conditions and reaction results are shown in Table 2 and Table 3.

Embodiment 2

[0039] Process catalytic cracking diesel oil according to the method of the present invention, and produce light aromatics and clean fuel oil through hydrocracking, and the fixed bed hydrogenation reactor and the moving bed hydrocracking reactor are filled with FDS-1 catalyst and hydrocracking catalyst II respectively. The reaction conditions and reaction results are shown in Table 2 and Table 3.

[0040] Table 3 Reaction results

[0041]

[0042]

[0043] As can be seen from the results in Table 3, FCC diesel oil is treated according to the method of the present invention, and the sulfur and nitrogen contents in the high-octane clean gasoline blending component are all less than 10 μg / g, and the process can effectively reduce the excessive hydrogenation of light aromatics. In the obtained naphtha fraction, the content of aromatics is greater than 65% by mass, so that the octane number reaches more than 95; the content of sulfur and nitrogen in the obtained clean diesel ...

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Abstract

The invention relates to a process for producing light aromatics and clean fuel oil by hydrocracking catalytic cracking diesel oil through moving bed. The process comprises the following steps: 1) mixing catalytic cracking diesel oil and hydrogen into a fixed bed hydrotreating reactor Hydrofining reaction to remove sulfur and nitrogen impurities, and carry out hydrogenation saturation of olefins and hydrogenation saturation of partial aromatic rings of condensed aromatic hydrocarbons; After mixing, enter the moving bed hydrocracking reactor for deep hydrocracking reaction, and realize the separation of hydrocracking products and deactivated catalyst at the outlet of the reactor; 3) The deactivated catalyst recovers the hydrocracking activity through online charring and sulfidation 4) Hydrocracking products are separated and fractionated to obtain liquefied gas, light aromatics, high-octane clean gasoline blending components and clean diesel blending components.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, more specifically, the invention relates to a process or method for producing light aromatics and clean fuel oil by hydrocracking in a moving bed. Background technique [0002] The environmental pollution caused by vehicle exhaust emissions has become a major problem that must be solved for the sustainable development of the national economy and society. For this reason, the standards for vehicle fuels in various countries in the world are becoming increasingly strict. The country has implemented the National IV clean fuel standard on January 1, 2015, and will implement the National V diesel quality index on January 1, 2017. The National VI diesel quality index is also being formulated, which will affect the development of my country's oil refining industry. posed great challenges. The annual processing capacity of catalytic cracking units in my country has exceeded 100 million ton...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/54B01J23/883
CPCB01J23/002B01J23/883B01J2523/00C10G45/54C10G2300/1096C10G2300/305C10G2300/701B01J2523/31B01J2523/68B01J2523/847
Inventor 刘宾刘晨光柴永明左萌谢坤殷长龙张孔远邢金仙
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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