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Method for treating hydrogen sulfide-containing gas

A processing method and technology for hydrogen sulfide, applied in chemical instruments and methods, gas fuels, separation methods, etc., can solve the problems of low hydrogen sulfide conversion rate and high decomposition energy consumption, and achieve low decomposition energy consumption and high hydrogen sulfide conversion rate. Effect

Pending Publication Date: 2019-08-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to provide a new treatment method for hydrogen sulfide-containing gas in order to overcome the defects of low hydrogen sulfide conversion rate and high decomposition energy consumption in the hydrogen sulfide decomposition reaction existing in the prior art

Method used

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  • Method for treating hydrogen sulfide-containing gas

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Experimental program
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Effect test

Embodiment 1

[0069] use figure 1 Shown flow chart carries out the method of the present invention, specifically:

[0070] (1) The feed gas containing hydrogen sulfide is introduced into the gas supply-gas distribution unit to mix with the carrier gas to obtain the reactant, the carrier gas is argon, and the amount of the carrier gas makes the amount of hydrogen sulfide in the reactant The content is 45% by volume;

[0071] (2) The reactant is introduced into the plasma reactor of the plasma reaction unit to carry out the hydrogen sulfide decomposition reaction under dielectric barrier discharge conditions. The dielectric barrier discharge conditions include: discharge voltage is 13.5kV, discharge frequency The discharge current is 500Hz, the discharge current is 1.73A, and the ratio of the discharge air gap to the thickness of the medium in the plasma reactor is 3:1, and the length of the discharge zone is 120cm; the conditions for the decomposition reaction include: the reaction temperat...

Embodiment 2

[0076] use figure 1 Shown flow chart carries out the method of the present invention, specifically:

[0077] (1) The feed gas containing hydrogen sulfide is introduced into the gas supply-gas distribution unit to mix with the carrier gas to obtain the reactant, the carrier gas is nitrogen, and the amount of the carrier gas is such that the content of hydrogen sulfide in the reactant is 30% by volume;

[0078] (2) The reactant is introduced into the plasma reactor of the plasma reaction unit to carry out the hydrogen sulfide decomposition reaction under dielectric barrier discharge conditions. The dielectric barrier discharge conditions include: discharge voltage is 17.2kV, discharge frequency is 2.3kHz, the discharge current is 2.0A, and the ratio of the discharge air gap in the plasma reactor to the thickness of the barrier medium is 0.5:1, and the length of the discharge zone is 200cm; the conditions for the decomposition reaction include: the reaction temperature is 142°C ...

Embodiment 3

[0083] use figure 1 Shown flow chart carries out the method of the present invention, specifically:

[0084] (1) The feed gas containing hydrogen sulfide is introduced into the gas supply-gas distribution unit to mix with the carrier gas to obtain the reactant, the carrier gas is helium, and the amount of the carrier gas makes the amount of hydrogen sulfide in the reactant The content is 15% by volume;

[0085] (2) The reactant is introduced into the plasma reactor of the plasma reaction unit to carry out the hydrogen sulfide decomposition reaction under dielectric barrier discharge conditions. The dielectric barrier discharge conditions include: discharge voltage is 15.7kV, discharge frequency The discharge current is 13500Hz, the discharge current is 1.1A, and the ratio of the discharge air gap in the plasma reactor to the thickness of the medium is 15:1, and the length of the discharge zone is 70cm; the conditions for the decomposition reaction include: the reaction temper...

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Abstract

The invention relates to the field of hydrogen sulfide decomposition, and discloses a method for treating a hydrogen sulfide-containing gas. The method comprises: (1) introducing a hydrogen sulfide-containing raw material gas into a gas supply-gas distribution unit, and mixing with a carrier gas to obtain a reactant; (2) introducing the reactant into a plasma reactor, and carrying out a hydrogen sulfide decomposition reaction; (3) introducing the obtained product into a gas-liquid separator, carrying out gas-liquid separation, introducing the first gas phase substance obtained after the separation into an alkali liquid absorption tower to obtain a second gas phase substance and a hydrogen sulfide-containing alkali liquid, and introducing the second gas phase substance into a carrier gas separator to separate the carrier gas, and desorbing the hydrogen sulfide-containing alkali liquid to obtain hydrogen sulfide gas; and (4) circulating the hydrogen sulfide gas obtained by the desorbingto the gas supply-gas distribution unit in the step (1). According to the present invention, the method can achieve significantly high hydrogen sulfide conversion rate compared with the methods in theprior art.

Description

technical field [0001] The invention relates to the field of hydrogen sulfide decomposition, in particular to a method for treating hydrogen sulfide-containing gas. Background technique [0002] Hydrogen sulfide (H 2 S) is a highly toxic and foul-smelling acid gas, which not only causes corrosion of metals and other materials, but also easily leads to catalyst poisoning and deactivation in chemical production; in addition, hydrogen sulfide can also endanger human health and cause environmental pollution. Therefore, the harmless treatment of a large amount of hydrogen sulfide gas produced in industrial fields such as oil, natural gas, coal and mineral processing needs to be solved urgently, no matter in terms of process requirements, equipment maintenance or environmental protection requirements. [0003] At present, the Claus method is commonly used in industry to treat hydrogen sulfide, and the method is to partially oxidize hydrogen sulfide to obtain sulfur and water. Al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/52C10L3/10
CPCB01D53/32B01D53/52B01D53/78C10L3/103
Inventor 张婧任君朋王林朱云峰石宁张铁徐伟孙峰李亚辉
Owner CHINA PETROLEUM & CHEM CORP
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