Device and method for voc adsorption and tail hydrogen safety treatment of purge gas in aromatics hydrogenation system

A technology for safe treatment and degassing, applied in gas treatment, chemical instruments and methods, separation methods, etc., can solve problems such as poor safety, and achieve the effect of preventing explosion, good technical effect, safe and reliable control and operation method

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the technical problems to be solved by the present invention is the problem of poor safety caused by the direct discharge of hydrogenation tail gas in the prior art. It provides a new VOC adsorption and tail hydrogen safety treatment device for aromatics hydrogenation system purge gas, which has the advantages of safety Advantages of better sex

Method used

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  • Device and method for voc adsorption and tail hydrogen safety treatment of purge gas in aromatics hydrogenation system

Examples

Experimental program
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Effect test

Embodiment 1

[0017] A method for VOC adsorption and tail hydrogen safety treatment of purge gas from an aromatics hydrogenation system, such as figure 1 As shown, after the exhaust gas of the aromatics hydrogenation system is separated by the gas-liquid separator, the gas phase enters the VOC adsorber, and the absorbed exhaust gas enters the hydrogen processor, and finally discharges up to the standard; the activated carbon fiber in the VOC adsorber absorbs the VOC For the aromatics in the gas release, the hydrogen processor adopts a Venturi design, and there is a flame-retardant wire mesh inside. When the gas is discharged, the air is sucked in through the pressure, and a mixing zone is formed at the outlet section. The outlet of the hydrogen processor is equipped with an ignition head, which automatically Ignite to remove the hydrogen.

[0018] The feed inlet of the VOC adsorber is equipped with a feed distributor. The distributor adopts a sieve structure, and the total area of ​​the sie...

Embodiment 2

[0021] A method for VOC adsorption and tail hydrogen safety treatment of purge gas from an aromatics hydrogenation system, such as figure 1 As shown, after the purge gas of the aromatics hydrogenation system is separated by the gas-liquid separator, the gas phase enters the VOC adsorber, and the purge gas after the adsorption enters the hydrogen processor, and finally discharges up to the standard; there are activated carbon fibers in the VOC adsorber, which absorb The aromatics in the exhaust gas, the hydrogen processor adopts a Venturi design, and there is a flame-retardant screen inside. When the gas is discharged, the air is sucked in through the pressure, and a mixing zone is formed at the outlet section. The outlet of the hydrogen processor is equipped with an ignition head. Automatically ignites and removes the hydrogen.

[0022] The feed inlet of the VOC adsorber is equipped with a feed distributor. The distributor adopts a sieve structure, and the total area of ​​the ...

Embodiment 3

[0025] A method for VOC adsorption and tail hydrogen safety treatment of purge gas from an aromatics hydrogenation system, such as figure 1 As shown, after the purge gas of the aromatics hydrogenation system is separated by the gas-liquid separator, the gas phase enters the VOC adsorber, and the purge gas after the adsorption enters the hydrogen processor, and finally discharges up to the standard; there are activated carbon fibers in the VOC adsorber, which absorb The aromatics in the exhaust gas, the hydrogen processor adopts a Venturi design, and there is a flame-retardant screen inside. When the gas is discharged, the air is sucked in through the pressure, and a mixing zone is formed at the outlet section. The outlet of the hydrogen processor is equipped with an ignition head. Automatically ignites and removes the hydrogen.

[0026] The feed inlet of the VOC adsorber is equipped with a feed distributor. The distributor adopts a sieve structure, and the total area of ​​the ...

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Abstract

The invention relates to a device and method for VOC adsorption and tail hydrogen safety treatment of purge gas of an aromatic hydrocarbon hydrogenation system, which mainly solves the problem of poor safety caused by direct discharge of hydrogenation tail gas in the prior art. The present invention adopts a device and method for VOC adsorption and tail hydrogen safety treatment of the purge gas of the aromatic hydrocarbon hydrogenation system. After the purge gas of the aromatic hydrocarbon hydrogenation system is separated by a gas-liquid separator, the gas phase enters the VOC adsorber, and the purge gas after adsorption is re- Enter the hydrogen processor, and finally meet the standard discharge; the VOC adsorber has activated carbon fibers in it to absorb the aromatics in the exhaust gas. The hydrogen processor adopts a Venturi design, and there is a fire-resistant screen inside. When the gas is discharged, it is sucked by pressure. The air forms a mixing zone at the outlet section, and the outlet of the hydrogen processor is equipped with an ignition head, which automatically ignites when the hydrogen is discharged, and the technical scheme of removing the hydrogen solves the above problems well, and can be used to treat hydrogen-containing purge gas.

Description

technical field [0001] The invention relates to a device and method for VOC adsorption and tail hydrogen safety treatment of purge gas of an aromatic hydrocarbon hydrogenation system. Background technique [0002] The hydrogenation process is a commonly used process type in chemical production. Most of them use hydrogen to participate in the reaction, which has a high risk. At the same time, the tail gas treatment after the reaction often contains hydrogen, which is also dangerous. Tail hydrogen in hydrocracking and other refining and chemical processes adopts a recycling mode, while small-scale chemical plants often discharge directly. With the improvement of safety and environmental protection requirements, it is urgent to propose a safe hydrogenation tail gas treatment technology. For example, in the hydrogen peroxide production process of anthraquinone method, a large amount of aromatic hydrocarbons and anthraquinone organic substances are used as the production medium o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/02F23G7/06
CPCB01D53/02F23G7/06B01D2253/102B01D2257/708B01D2257/7027B01D2257/108Y02A50/20
Inventor 张帆贾学五刘静如王振刚费轶石宁徐伟
Owner CHINA PETROLEUM & CHEM CORP
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