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Method for enhancing mass transfer through suspension bed hydrogenation technology

A suspended bed technology, applied in hydrocarbon oil cracking, petroleum industry, etc., can solve the problems of low mass transfer efficiency and inability to obtain a large number of microbubbles, so as to improve mass transfer efficiency, reduce daily operating costs, and improve utilization rate Effect

Inactive Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this reactor can reduce the coalescence of large bubbles to a certain extent, its gas distribution is still in the form of a traditional distribution plate, which cannot obtain a large number of microbubbles, and the mass transfer efficiency is low

Method used

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  • Method for enhancing mass transfer through suspension bed hydrogenation technology
  • Method for enhancing mass transfer through suspension bed hydrogenation technology
  • Method for enhancing mass transfer through suspension bed hydrogenation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] This example is an implementation of residual oil hydrotreating, and the schematic diagram of the operation process refers to the figure 1 .

[0026] The raw material oil 4, fresh hydrogen gas 5, and circulating hydrogen gas 6 that are added to the suspended bed catalyst enter the microbubble generator 2 for enhanced contact. The hydrogen gas in the raw material oil is fully dissolved, and the undissolved hydrogen gas produces a large number of microbubbles with a diameter less than 0.5mm. The proportion of microbubbles is About 80%. The hydrogen-oil mixture enters the suspended bed reactor 1, and the effluent from the reactor enters the high-pressure separator, the separated hydrogen is recycled, and the separated liquid enters the low-pressure separator and fractionation system in turn to obtain light oil products.

[0027] The microbubble generator is a porous venturi bubble generator.

[0028] The catalyst used in the suspension bed hydrogenation test is a water-s...

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PUM

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Abstract

The invention discloses a method for enhancing mass transfer through the suspension bed hydrogenation technology. The method comprises the following concrete steps: transferring feed oil with uniformly dispersed catalysts and hydrogen gas into a microscopic bubble generator in front of a reactor, fully mixing to ensure that the hydrogen gas is dispersed into the feed oil in a microscopic bubble mode, and then transferring the mixture into a suspension bed reactor to perform a hydrocracking reaction. By adopting the method provided by the invention, the utilization rate of the hydrogen gas can be increased, the mass transfer effect between a gaseous reactant and a liquid reactant can be enhanced, the hydrogen-oil volume ratio can be reduced, the operating cost can be saved, and the hydrocracking reaction depth can be increased.

Description

technical field [0001] The invention relates to a method for enhancing mass transfer in a suspended bed hydrogenation technology, in particular to a method for increasing the proportion of microbubbles in a suspended bed hydrogenation reactor for heavy and residual oil to enhance mass transfer. Background technique [0002] Due to the increasing shortage of oil resources and the increasingly serious trend of heavy oil, obtaining the largest amount of light oil products has become an important task for oil refiners. Suspension bed hydrogenation process of heavy and residual oil is an ideal method for lightening inferior residual oil. The process is as follows: the catalyst and raw oil are uniformly mixed to obtain mixed raw materials, and then the mixed raw materials and a large amount of hydrogen enter the empty cylinder reactor (the reactor can also have simple internal components, such as thermocouple tubes and distribution plates), and then Catalytic hydrogenation and cr...

Claims

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Application Information

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IPC IPC(8): C10G47/26
Inventor 王喜彬方向晨孙万付刘建宇胡长禄曹春清曲涛刘雪玲
Owner CHINA PETROLEUM & CHEM CORP
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