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Hydrocracking method for composite catalyst bed layer

A composite catalyst, hydrocracking technology, used in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc.

Active Publication Date: 2006-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technology does not aim at the hydrocracking reaction process and improve the reaction speed of hydrocracking

Method used

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  • Hydrocracking method for composite catalyst bed layer
  • Hydrocracking method for composite catalyst bed layer
  • Hydrocracking method for composite catalyst bed layer

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] This scheme belongs to a one-stage series process flow, which can be applied to existing conventional industrial devices without investing in the modification of the reaction system. Two reactors in series are used, the first reactor (R1) uses a hydrorefining catalyst, the second reactor (R2) uses a hydroupgrading catalyst and a hydrocracking catalyst, and the two reactors are used in series and share a Set of circulating hydrogen system. Catalyst loading scheme:

[0028] The hydrofining catalyst is 3996 hydrofining catalyst developed by Fushun Petrochemical Research Institute and produced by Fushun Petrochemical Company Catalyst Factory. The hydrocracking catalyst was the 3974 catalyst produced by Fushun Petrochemical Company Catalyst Factory developed by Fushun Petrochemical Research Institute. The main properties of each catalyst are shown in Table 1.

[0029] catalyst

[0030] The operating conditions of this process scheme: reaction pressure 15MPa, hydr...

example 2

[0035] The hydrogenation upgrading catalyst in Example 1 was mixed with 20V% hydrocracking catalyst, installed in the upper layer of the cracking reactor, and the remaining cracking catalysts were installed in the lower layer, and the operating space velocity was changed. The results are shown in Table 2.

example 3

[0037]The hydrogenation upgrading catalyst in Example 2 was mixed with 60V% hydrocracking catalyst, installed in the upper layer of the cracking reactor, and the remaining cracking catalysts were installed in the lower layer, and the operating space velocity was changed. The results are shown in Table 2.

[0038] Program

[0039] From the data, it can be seen that compared with the traditional positive sequence process, the process of the present invention, due to the use of the catalyst process involved in the present invention and its use scheme, compared with the comparative example, due to the hydrogenation modification, additional intermediate products are produced, which improves the conventional hydrogenation process. The degree of difficulty of carrying out the cracking process has accelerated the reaction speed, so although the scheme of the present invention is used under high space velocity or handles more materials per unit time (modifying and cracking to...

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Abstract

The invention relates to hydrocracking method with composite catalyst bed, which comprises: hydrofining the material, then hydrocracking in reactor that the material contacts with hydromodification catalyst with eyelet elite and 0~80% hydrocracking catalyst; the material passes the hydromodification catalyst bed or composite catalyste bed then the hydrocracking catalyst bed. Compared with prior art, this invention can improve reaction speed and handling capacity.

Description

technical field [0001] The invention relates to a hydrocracking process, in particular to a hydrocracking method using a composite catalyst bed to improve the hydrocracking reaction speed. Background technique [0002] As a clean production process for the deep processing of heavy oil to produce high-quality light oil products (especially environmentally friendly middle distillate products) and petrochemical feedstock, hydrocracking will play an increasingly important role in the future oil refining industry. [0003] The hydrocracking catalyst is a dual-function catalyst with hydrogenation performance and cracking performance. The hydrocracking catalyst generally uses non-noble metals of VIB and VIII metals or noble metals such as platinum as the hydrogenation component, and the acidic component can be crystalline zeolite and / or amorphous silica-alumina. The use of zeolite in the hydrocracking catalyst makes the stability and life of the catalyst better than that of the am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/12
Inventor 陈松谷明镝张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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