Method for decomposing hydrogen sulfide through dielectric barrier discharge

A dielectric barrier discharge and hydrogen sulfide technology, applied in the field of plasma chemistry, can solve the problems of low conversion rate of hydrogen sulfide and high decomposition energy consumption, and achieve the effect of low decomposition energy consumption and high conversion rate of hydrogen sulfide

Active 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 object of the present invention is to provide a new Method of Decomposing Hydrogen Sulfide by Dielectric Barrier Discharge

Method used

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  • Method for decomposing hydrogen sulfide through dielectric barrier discharge
  • Method for decomposing hydrogen sulfide through dielectric barrier discharge
  • Method for decomposing hydrogen sulfide through dielectric barrier discharge

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Experimental program
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specific Embodiment approach

[0088] Nitrogen gas is introduced into the inner barrel of the grid plasma reactor from the reactant inlet to remove the air in the discharge area, and the gas is drawn out from the product outlet. At the same time, the heat transfer medium is introduced into the outer cylinder from the heat transfer medium inlet, and the introduced heat transfer medium is led out from the heat transfer medium outlet. The temperature of the heat transfer medium is maintained at the temperature required for the reaction. Then feed the raw material gas containing hydrogen sulfide into the inner cylinder of the grid type plasma reactor from the inlet of the reactant. The raw material gas fills each reaction tube. A plasma discharge field is formed between the electrode and the ground electrode. The hydrogen sulfide gas is ionized in the discharge area and decomposed into hydrogen and elemental sulfur. The elemental sulfur produced by the discharge slowly flows down the inner cylinder wall and fl...

Embodiment 1

[0119] use figure 1 The grid-type plasma reactor shown performs hydrogen sulfide decomposition reaction, and the specific structure and structural parameters of the grid-type plasma reactor are as follows:

[0120] Grid plasma reactors include:

[0121] an inner cylinder, the inner cylinder is respectively provided with a reactant inlet and a product outlet;

[0122] an outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat-conducting medium inlet and a heat-conducting medium outlet, and the heat-conducting medium introduced by the heat-conducting medium inlet can surround the inner cylinder the outer periphery of the cylinder, and the heat transfer medium can be drawn out from the heat transfer medium outlet;

[0123] High-voltage electrodes, the high-voltage electrodes are arranged in the inner cylinder, and the high-voltage electrodes are arranged in five layers in the inner cylinder; in each hi...

Embodiment 2

[0137] use figure 2The grid-type plasma reactor shown performs hydrogen sulfide decomposition reaction, and the specific structure and structural parameters of the grid-type plasma reactor are as follows:

[0138] Grid plasma reactors include:

[0139] an inner cylinder, the inner cylinder is respectively provided with a reactant inlet and a product outlet;

[0140] an outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat-conducting medium inlet and a heat-conducting medium outlet, and the heat-conducting medium introduced by the heat-conducting medium inlet can surround the inner cylinder the outer periphery of the cylinder, and the heat transfer medium can be drawn out from the heat transfer medium outlet;

[0141] High-voltage electrodes, the high-voltage electrodes are arranged in the inner cylinder, and the high-voltage electrodes are arranged in five layers in the inner cylinder; in each hi...

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Abstract

The invention relates to the field of plasma chemistry, and discloses a method for decomposing hydrogen sulfide through dielectric barrier discharge. The method comprises: introducing a hydrogen sulfide-containing raw material gas into a grid type plasma reactor under dielectric barrier discharge conditions, and carrying out a hydrogen sulfide decomposition reaction, wherein the dielectric barrierdischarge conditions comprise a discharge voltage of 5-30 kV and a discharge frequency of 200-30000 Hz, the hydrogen sulfide decomposition reaction conditions comprise a reaction temperature of 0-800DEG C and a reaction pressure of -0.06-0.6 MPa, and the residence time of the reactant in the grid type plasma reactor is 1*10<-5>-120 s. According to the present invention, the method can achieve high hydrogen sulfide conversion rate.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a method for decomposing hydrogen sulfide by dielectric barrier discharge. 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 wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/04C01B17/04B01J19/08
CPCC01B3/04C01B17/0495B01J19/088Y02E60/36
Inventor 张婧张铁王林任君朋石宁朱云峰李亚辉
Owner CHINA PETROLEUM & CHEM CORP
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