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Volatile organic compound (VOC) adsorption and tail hydrogen safe treatment device and method for purge gas of aromatic hydrogenation system

A technology for safe treatment and release of gas, applied in gas treatment, chemical instruments and methods, combustion methods, etc., can solve problems such as poor safety, achieve the effect of preventing explosion, safe and reliable control and operation methods, and ensuring overall safety

Active Publication Date: 2019-07-16
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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  • Volatile organic compound (VOC) adsorption and tail hydrogen safe treatment device and method for purge gas of aromatic hydrogenation system

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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 volatile organic compound (VOC) adsorption and tail hydrogen safe treatment device and method for purge gas of an aromatic hydrogenation system, and mainly solves the problem that safety is poor due to the fact that hydrogenation tail gas is directly discharged in the prior art. According to the invention, the VOC adsorption and tail hydrogen safety treatment device andmethod for purge gas of the aromatic hydrogenation system are adopted; after the purge gas of the aromatic hydrogenation system is separated by a gas-liquid separator, the gas phase enters a VOC adsorber, and the purge gas subjected to adsorption enters a hydrogen processor and finally is up to standard and discharged; active carbon fibers are arranged in the VOC adsorber to adsorb aromatic hydrocarbons in the purge gas; the hydrogen processor is designed in a venturi type, and a fire blocking wire net is arranged in the hydrogen processor, so that when gas is discharged, air is sucked in through pressure, and a mixing zone is formed at an outlet section; an ignition head is arranged at an outlet of the hydrogen processor, and automatic ignition is carried out when hydrogen is discharged,so that the hydrogen is removed. The technical scheme well solves the above problem, and the device and method can be used for treating 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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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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