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Low temperature plasma system for decomposing hydrogen sulfide, and method for decomposing hydrogen sulfide

A low-temperature plasma and plasma technology, applied in the field of ion chemistry, can solve the problems of unstable conversion rate and low hydrogen sulfide conversion rate, and achieve the effects of continuous and stable operation, long-term operation, and flexible temperature control.

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 low-temperature plasma system for decomposing hydrogen sulfide and decomposing sulfide hydrogen method

Method used

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  • Low temperature plasma system for decomposing hydrogen sulfide, and method for decomposing hydrogen sulfide
  • Low temperature plasma system for decomposing hydrogen sulfide, and method for decomposing hydrogen sulfide
  • Low temperature plasma system for decomposing hydrogen sulfide, and method for decomposing hydrogen sulfide

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specific Embodiment approach

[0090] Nitrogen gas is introduced into the inner barrel of the low-temperature plasma reactor from the reactor 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 by the system reaction. Then feed the raw material gas containing hydrogen sulfide into the inner cylinder of the low-temperature plasma reactor from the inlet of the reactor, and turn on the high-voltage power supply after the raw material gas flow is stable, and form a plasma discharge between the center electrode and the ground electrode by adjusting the voltage and frequency field. The hydrogen sulfide gas is ionized in the discharge area and decomposed into hydrogen and elemental...

Embodiment 1

[0140] use has image 3 The low-temperature plasma system for decomposing hydrogen sulfide in the flow chart shown in the flow chart carries out the hydrogen sulfide decomposition reaction, and the low-temperature plasma reactor in this embodiment has figure 1 structure shown.

[0141] The process flow of this embodiment is as shown in the aforementioned specific implementation, and the structural parameters of the low-temperature plasma reactor are as follows:

[0142] Low temperature plasma reactors include:

[0143] An inner cylinder, the inner cylinder is respectively provided with a reactor inlet, a gas product outlet and a liquid product outlet, and the entire cylinder structure of the inner cylinder is formed by a barrier medium, and the material forming the barrier medium is hard glass;

[0144] An outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat transfer medium inlet and a heat trans...

Embodiment 2

[0170] use has image 3 The low-temperature plasma system for decomposing hydrogen sulfide in the flow chart shown in the flow chart carries out the hydrogen sulfide decomposition reaction, and the low-temperature plasma reactor in this embodiment has figure 2 structure shown.

[0171] The process flow of this embodiment is as shown in the aforementioned specific implementation, and the structural parameters of the low-temperature plasma reactor are as follows:

[0172] Low temperature plasma reactors include:

[0173] an inner cylinder, the inner cylinder is respectively provided with a reactor inlet, a gas product outlet and a liquid product outlet;

[0174] An outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat transfer medium inlet and a heat transfer medium outlet;

[0175] A central electrode, the central electrode is arranged at the central axis of the inner cylinder, and the material f...

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Abstract

The invention relates to the field of plasma chemistry, and discloses a low temperature plasma system for decomposing hydrogen sulfide, and a method for decomposing hydrogen sulfide. The system comprises a gas supply-gas distribution unit, a plasma reaction unit and a product separation unit, wherein the gas supply-gas distribution unit, the plasma reaction unit and the product separation unit aresequentially connected through pipelines, the plasma reaction unit comprises a low temperature plasma reactor and a plasma power source, the reactor comprises an inner cylinder, an outer cylinder, acenter electrode arranged in the inner cylinder, a barrier medium and a grounding electrode, the barrier medium is arranged around the side wall of the inner cylinder or wraps the outer surface of thecenter electrode or forms the side wall of the inner cylinder, and a ratio (L1:L2) of the thickness L1 of a discharge gas gap to the length L2 of a discharge region is 1:(0.5-6000). According to thepresent invention, with the apparatus and the method, the hydrogen sulfide conversion rate can be increased.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a low-temperature plasma system for decomposing hydrogen sulfide and a method for decomposing hydrogen sulfide. 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 hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/04C01B3/04
CPCC01B3/04C01B17/04C01B17/0404Y02E60/36
Inventor 石宁张婧朱云峰孙峰任君朋徐伟张铁李亚辉
Owner CHINA PETROLEUM & CHEM CORP
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