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Method for refining circulating hydrogen in hydrocracking process

A technology for hydrocracking and circulating hydrogen, which is applied in hydrocarbon oil cracking, petroleum industry and other directions, can solve the problem of difficult to increase the concentration of circulating hydrogen, and achieve the effect of improving the performance of hydrogenation reaction

Inactive Publication Date: 2009-05-20
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that it is difficult to increase the circulating hydrogen concentration in the existing hydrocracking process

Method used

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  • Method for refining circulating hydrogen in hydrocracking process
  • Method for refining circulating hydrogen in hydrocracking process
  • Method for refining circulating hydrogen in hydrocracking process

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Embodiment Construction

[0023] see Figure 6 , let the gas from the high-pressure separator 3, that is, the circulating hydrogen in the traditional process, enter the hydrate method hydrogen purification unit 11 after removing the entrained liquid droplets in the liquid separation tank 4, where light hydrocarbons such as methane and ethylene are Components contact with water to form hydrates, but hydrogen cannot form hydrates and still exist in the form of gas, so that they are separated from other gases that can form hydrates, so that the hydrogen concentration is increased to above 95% (V); leaving the hydration separation unit 11 The concentrated hydrogen used as circulating hydrogen 9 is pressurized by circulating compressor 6, and returns to hydrofinishing reactor 1 and hydrocracking reactor 2 after being mixed with new hydrogen 8, so that the hydrogen concentration and partial pressure in the two reactors are maintained at a high level.

[0024] The operation process of hydration, separation a...

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Abstract

The invention discloses an extracting method of dense circulating hydrogen in the hydrogenating cracking technique, which comprises the following steps: separating extracted dense circulating hydrogen from high-pressure separator; removing drip in the separatory tank; entering into hydrated-method purifying unit; removing light hydrocarbon component in the circulating hydrogen; blending purified circulating hydrogen and new hydrogen into hydrogenating reactor.

Description

technical field [0001] The invention relates to a method for enriching circulating hydrogen in a hydrocracking process, and belongs to the technical field of petroleum processing. Background technique [0002] Hydrogen is an indispensable raw material for the normal production of hydrocracking units. The purity of hydrogen has an important impact on the manufacturing cost and operating cost of hydrocracking units, as well as the reaction performance related to the target product yield and catalyst operation cycle. Traditional high-pressure hydrocracking systems such as figure 1 As shown, the main equipment includes hydrofining reactor 1, hydrocracking reactor 2, high-pressure separator 3, liquid separation tank 4, new hydrogen compressor 5, circulating hydrogen compressor 6, circulating hydrogen heating furnace 7, raw material Oil feed pump 12 etc. [0003] From figure 1 It can be seen that the purity of the hydrogen entering the hydrofinishing reactor 1 and the hydrocrac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/00
Inventor 陈光进马安郭绪强阎立军孙长宇
Owner CHINA UNIV OF PETROLEUM (BEIJING)