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Suspended bed hydrogenation combination process and system

A combined process and suspended bed technology, applied in the petroleum industry, hydrocarbon oil cracking and other directions, can solve the problem of reducing the activity of hydrogenation catalysts, and achieve the effects of reducing the addition amount, delaying the deactivation time and improving the hydrogenation efficiency.

Active Publication Date: 2018-01-30
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the process defects in the prior art that as the reaction progresses, the activity of the hydrogenation catalyst decreases, and it is necessary to continuously replenish the hydrogenation catalyst to complete deep hydrogenation

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  • Suspended bed hydrogenation combination process and system

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Embodiment 1

[0031] This embodiment provides a suspended bed hydrogenation combined system, such as figure 1 As shown, the suspended bed hydrocracking reactors 5 connected in series are included. It also includes a first conveying assembly 31 and a second conveying assembly 32 respectively arranged at the entrance of the suspended bed hydrocracking reactor 5 and the entrance of the suspended bed hydrogenation stabilization reactor 6 for conveying materials; the conveying assembly 31 , 32 are independently selected from but not limited to booster pumps, lock hoppers and other conveying equipment; as an embodiment of the present invention, in this embodiment, both the first conveying assembly 31 and the second conveying assembly 32 are booster pumps.

[0032] The combined hydrogenation system also includes a suspension bed separation system 7 arranged at the outlet of the suspension bed hydrogenation stabilization reactor 6 for further separating the materials treated by the suspension bed h...

Embodiment 2

[0037] This embodiment provides a suspended bed hydrogenation combined process, including the following steps:

[0038] S1, the heavy oil and the cracking catalyst are mixed and transported to the suspension bed hydrocracking reactor 5 by the second reciprocating pump for high temperature cracking;

[0039] In this embodiment, the cracking catalyst includes activated carbon and kaolin fine powder, the weight ratio of activated carbon to kaolin fine powder is 3:2, and the particle size of the cracking catalyst is 80 microns to 100 microns;

[0040] S2. The high-temperature cracking product is mixed with a hydrogenation-stabilizing catalyst and then transported to the suspension-bed hydrogenation-stabilization reactor 6, where hydrogenation is refined in the suspension-bed hydrogenation-stabilization reactor 6;

[0041] In this embodiment, the hydrogenation stable catalyst is a solid catalyst supported by solid alumina as a support for hydrogenation active metals such as Co, Mo,...

Embodiment 3

[0050] This embodiment provides a suspended bed hydrogenation combined process, comprising the following steps:

[0051] S1. Heavy oil and cracking catalyst are mixed and sent to the suspension bed hydrocracking reactor for high temperature cracking;

[0052] In this embodiment, the cracking catalyst includes activated carbon and kaolin fine powder, the weight ratio of activated carbon to kaolin fine powder is 4:2, and the particle size of the cracking catalyst is 60 microns to 80 microns;

[0053] S2. The high-temperature cracked product is mixed with a hydrogenation-stabilizing catalyst and transported to a suspension-bed hydrogenation-stabilization reactor, where hydrogenation is refined in the suspension-bed hydrogenation-stabilization reactor;

[0054] In this embodiment, the hydrogenation stable catalyst is a solid catalyst supported by solid alumina as a support for hydrogenation active metals such as Co, Mo, Ni, etc., and the particle size of the hydrogenation stable c...

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Abstract

The invention relates to the technical field of coal and petrochemical industries and discloses a suspended bed hydrogenation combination process and system. The hydrogenation combination process comprises the steps: after mixing heavy oil with a cracking catalyst, conveying the mixture to a suspended bed hydrocracking reactor to carry out high-temperature cracking; and after mixing a high-temperature cracking product with a hydrogenation stabilizing catalyst, conveying the mixture into a suspended bed hydrogenation stabilizing reactor, and carrying out hydrorefining in the suspended bed hydrogenation stabilizing reactor. The invention further discloses the hydrogenation combination system in which the process is adopted. If the process and system are used for heavy oil hydrogenation lightening, thermal cracking and hydrogenation are completed under different reaction conditions, so that all functions can be sufficiently exerted, the hydrogenation efficiency is increased, meanwhile, the deactivation time of the hydrogenation stabilizing catalyst is prolonged, and the additive amount of the hydrogenation stabilizing catalyst is reduced.

Description

technical field [0001] The invention relates to the technical field of coal and petrochemical industry, in particular to a combined process and system for hydrogenation of a suspended bed. Background technique [0002] Due to the increasing shortage of petroleum resources and the increasingly serious trend of heavy oil, it has become an important task for oil refiners to obtain the largest amount of light oil products, so more and more people are doing research on heavy oil processing. [0003] Suspension bed hydrogenation process is one of the ideal methods for lightening heavy oil. The process is generally uniform mixing of dispersed catalyst and raw oil to obtain mixed raw materials, and then the mixed raw materials and a large amount of hydrogen enter one or more identical empty cylinder reactors, and carry out catalytic hydrogenation and cracking reactions under hydrogen conditions. . Although all countries in the world are working hard to study the suspension bed hyd...

Claims

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Application Information

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IPC IPC(8): C10G47/26
Inventor 李林
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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