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Method for enhancing gas-liquid mass transfer of ebullated bed hydrogenation reactor

A hydrogenation reactor and enhanced boiling technology, which is applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of not considering the optimization of gas distribution and affecting the reaction conversion rate, etc., so as to reduce daily operating costs and save investment costs , The effect of reducing maintenance costs

Active Publication Date: 2012-12-26
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

Although the gas content is reduced, the distribution optimization of the gas is not considered, which will affect the reaction conversion rate

Method used

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  • Method for enhancing gas-liquid mass transfer of ebullated bed hydrogenation reactor
  • Method for enhancing gas-liquid mass transfer of ebullated bed hydrogenation reactor

Examples

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Embodiment 1

[0034] This example is an implementation of residual oil hydrotreating, and the schematic diagram of the operation process refers to the figure 1 .

[0035] Fresh raw material oil 5 and circulating oil 6 are mixed into liquid phase materials in the pipeline, the volume ratio of circulating material and fresh raw material is 1:1, fresh hydrogen 3 and circulating hydrogen 4 are also mixed in the pipeline, and then the liquid phase materials and mixed Hydrogen enters the microbubble generator 2 for gas-liquid enhanced distribution. The liquid phase material with fully dissolved hydrogen and a large number of microbubbles directly enters the ebullated bed reactor 1, and contacts with the catalyst for hydrogenation and cracking reactions. The hydrogen after the reaction is recycled, part of the liquid material is recycled into the microbubble generator, and part of it enters the fractionation system as the generated oil 7 .

[0036] The ebullating bed hydrogenation catalyst is mi...

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Abstract

The invention discloses a method for enhancing the gas-liquid mass transfer of an ebullated bed hydrogenation reactor, which comprises the following processes of: introducing fresh raw oil, circulating oil and hydrogen into a microbubble generator arranged in front of the reactor, fully mixing to make the hydrogen dispersed in a liquid-phase material in the form of microbubbles, and performing hydrogenation and cracking reaction in the ebullated bed reactor. The method can improve the utilization rate of the hydrogen, reduce the volume ratio of the hydrogen to the oil, save operating cost and promote the depth of the hydrogenation and cracking reaction.

Description

technical field [0001] The invention relates to a method for enhancing gas-liquid mass transfer in an ebullated-bed hydrogenation reactor, in particular to a method for increasing the proportion of microbubbles in the ebullated-bed hydrogenation reactor to enhance gas-liquid mass transfer. Background technique [0002] Hydrotreating and cracking of residual oil is the most reasonable and effective method to solve the deep processing of heavy oil. The existing residual oil hydrogenation technology is divided into four types: fixed bed hydrogenation, moving bed hydrogenation, suspension bed hydrogenation and ebullating bed hydrogenation. The fixed-bed hydroprocessing technology is relatively the most mature, but its limitation of poor selectivity to raw materials is becoming more and more prominent; the moving-bed hydrogenation technology is also mature, and the adaptability to raw materials has been enhanced because the catalyst can realize online discharge. It is still not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/22
Inventor 王喜彬刘建宇胡长禄方向晨孙万付曹春清曲涛刘雪玲
Owner CHINA PETROLEUM & CHEM CORP
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