Hydrocracking catalyst for vacuum residue suspension bed and preparation method and use method thereof

Abstract

The invention discloses a hydrocracking catalyst for a vacuum residue suspension bed and a preparation method and a use method thereof. The hydrocracking catalyst for the vacuum residue suspension bed is prepared by the following step of: selecting iron pyrite of which the mass percentage content of iron is 40-50 percent for serving as a raw material. The hydrocracking catalyst for the vacuum residue suspension bed is prepared from a cheap iron pyrite raw material, and has the advantages of wide raw material source and simple treatment and preparation processes; the coke yield is low and the fraction yield is high under a low pressure condition; generated coke can suspend in liquefaction oil without being attached to the inner wall of a high-pressure electromagnetic stirring reaction kettle, so that blockage of a reactor and a pipeline in an industrial device is prevented; hydrogenation lightening is performed on vacuum residues through a two-section reaction, the temperature is controlled stably, the phenomenon of violent temperature rise in a hydrogenation lightening process of vacuum residues is avoided, and the coke yield is further suppressed; and a foundation is laid for the industrialization of a vacuum residue suspension bed hydrocracking technology.

Description

technical field [0001] The invention relates to the technical field of vacuum residue oil processing, and relates to a suspension bed hydrocracking catalyst for vacuum residue oil, a preparation method and a use method. Background technique [0002] The residual oil from the decompression tower of the refinery is called vacuum residue (boiling point is above 500°C). The literature points out that the vacuum residue accounts for 38% to 45% of my country's crude oil refining process. Petroleum is a limited How to make full use of the vacuum residue and turn it into usable gasoline and diesel has become an important task for domestic and foreign petroleum researchers. [0003] Common vacuum residue processing methods include delayed coking, visbreaking, catalytic cracking, fixed bed and ebullating bed hydrogenation. ⑴Delayed coking, the literature points out that delayed coking can process various high-sulfur, high-carbon, high-metal, high-asphaltene inferior residues, but its ...

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Problems solved by technology

[0004] The present invention provides a vacuum residue suspension bed hydrocracking catalyst and its preparation method and use method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the existing residue suspension bed hydrocracking catalyst cannot meet production needs The temperature soars during the reaction with residual oil, causing damage to equipment and potential safety hazards, which greatly reduces costs

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