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Device and method for treating hydrogen-containing purge gas by low-temperature catalytic oxidation

A technology of oxidation treatment and low-temperature catalysis, applied in chemical instruments and methods, gas treatment, separation methods, etc., can solve problems such as poor safety, and achieve the effects of preventing safety problems, good technical effects, safe and reliable control and operation methods

Inactive 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 hydrogenated tail gas in the prior art. A new low-temperature catalytic oxidation treatment device for hydrogen-containing purge gas is provided, which has better safety The advantages

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  • Device and method for treating hydrogen-containing purge gas by low-temperature catalytic oxidation

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Embodiment 1

[0019] A method for low-temperature catalytic oxidation treatment of hydrogen-containing purge gas, such as figure 1 As shown, the hydrogen-containing purge gas and air enter the tubular catalytic oxidation reactor, contact with the catalyst, and a non-combustion oxidation reaction occurs, the reacted gas is discharged through the discharge line, and the generated water is discharged from the condensation discharge line; the tubular The type catalytic oxidation reactor is equipped with a heating and temperature control system, and a fire-resistant wire mesh is installed on the top. The catalyst is platinum metal powder, and the catalyst is packed in a column tube.

[0020] A small amount of hydrogenation tail gas discharged from the hydrogenation reaction system enters from the top of the reactor. Under the action of the platinum catalyst, hydrogen and oxygen in the air rapidly undergo a non-combustion oxidation reaction to generate water and discharge from the bottom. The cat...

Embodiment 2

[0023] A method for low-temperature catalytic oxidation treatment of hydrogen-containing purge gas, such as figure 1 As shown, the hydrogen-containing purge gas and air enter the tubular catalytic oxidation reactor, contact with the catalyst, and a non-combustion oxidation reaction occurs, the reacted gas is discharged through the discharge line, and the generated water is discharged from the condensation discharge line; the tubular The type catalytic oxidation reactor is equipped with a heating and temperature control system, and a fire-resistant wire mesh is installed at the bottom. The catalyst is palladium metal powder, and the catalyst is packed in a column tube.

[0024] A small amount of hydrogenation tail gas discharged from the hydrogenation reaction system enters from the bottom of the reactor. Under the action of the palladium catalyst, hydrogen and oxygen in the air rapidly undergo a non-combustion oxidation reaction to generate water and discharge from the bottom. ...

Embodiment 3

[0027] A method for low-temperature catalytic oxidation treatment of hydrogen-containing purge gas, such as figure 1 As shown, the hydrogen-containing purge gas and air enter the tubular catalytic oxidation reactor, contact with the catalyst, and a non-combustion oxidation reaction occurs, the reacted gas is discharged through the discharge line, and the generated water is discharged from the condensation discharge line; the tubular The type catalytic oxidation reactor is equipped with a heating and temperature control system, and a fire-resistant wire mesh is installed on the top. The catalyst is a platinum wire mesh, and the catalyst is packed in a column tube.

[0028] A small amount of hydrogenation tail gas discharged from the hydrogenation reaction system enters from the top of the reactor. Under the action of the platinum catalyst, hydrogen and oxygen in the air rapidly undergo a non-combustion oxidation reaction to generate water and discharge from the bottom. The cata...

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Abstract

The invention relates to a device and method for treating hydrogen-containing purge gas by low-temperature catalytic oxidation, and mainly solves the problem of poor safety caused by direct dischargeof hydrogenation tail gas in the prior art. According to the device and method for treating the hydrogen-containing purge gas through low-temperature catalytic oxidation, the hydrogen-containing purgegas and air enter a tubular catalytic oxidation reactor to be in contact with a catalyst to generate combustion-free oxidation reaction, the reacted gas is discharged through a discharge line, and generated water is drained through a condensate draining line; the tubular catalytic oxidation reactor is provided with a heating and temperature control system, a fire-retardant wire mesh is arranged in the tubular catalytic oxidation reactor, the catalyst is platinum or palladium metal powder, or a wire mesh, or is loaded on an alumina carrier, the problem is solved well by the technical scheme offilling tubes with the catalyst, and the device and method can be used for treating the hydrogen-containing purge gas.

Description

technical field [0001] The invention relates to a device and method for low-temperature catalytic oxidation treatment of purge gas containing hydrogen. 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 of hydrogen peroxide. The first s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/46
CPCB01D53/8671B01D53/8696B01D2255/1021B01D2255/1023B01D2257/108
Inventor 张帆刘静如贾学五王振刚费轶石宁徐伟
Owner CHINA PETROLEUM & CHEM CORP
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