Low-temperature plasma device for decomposing hydrogen sulfide and method for decomposing hydrogen sulfide

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

Active Publication Date: 2022-06-28
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 device for decomposing hydrogen sulfide and a method for decomposing hydrogen sulfide Methods

Method used

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  • Low-temperature plasma device for decomposing hydrogen sulfide and method for decomposing hydrogen sulfide
  • Low-temperature plasma device for decomposing hydrogen sulfide and method for decomposing hydrogen sulfide
  • Low-temperature plasma device for decomposing hydrogen sulfide and method for decomposing hydrogen sulfide

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specific Embodiment approach

[0088] Nitrogen gas was introduced into the inner barrel of the low temperature plasma reactor from the reactor inlet to purge air in the discharge area, and the gas was drawn out from the product outlet. At the same time, the heat-conducting medium is introduced into the outer cylinder from the heat-conducting medium inlet, and the introduced heat-conducting medium is led out from the heat-conducting medium outlet. The temperature of the heat transfer medium is maintained at the temperature required for 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. After the gas flow of the raw material is stable, turn on the high-voltage power supply, and adjust the voltage and frequency to form a plasma discharge between the center electrode and the ground electrode. field. The hydrogen sulfide gas is ionized in the discharge area and decomposed into hydrogen and ...

Embodiment 1

[0138] using the image 3 The low temperature plasma device for decomposing hydrogen sulfide in the shown flow chart performs hydrogen sulfide decomposition reaction, and the low temperature plasma reactor in this embodiment has figure 1 shown structure.

[0139] The process flow of this embodiment is shown in the foregoing specific embodiment, and the structural parameters of the low-temperature plasma reactor are as follows:

[0140] Low temperature plasma reactors include:

[0141] The inner cylinder is provided with a reactor inlet, a gas product outlet and a liquid product outlet respectively, wherein all the cylinder structures of the inner cylinder are formed by a blocking medium, and the material forming the blocking medium is hard Glass;

[0142] an outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat conduction medium inlet and a heat conduction medium outlet;

[0143] a central elect...

Embodiment 2

[0171] using the image 3 The low temperature plasma device for decomposing hydrogen sulfide in the shown flow chart performs hydrogen sulfide decomposition reaction, and the low temperature plasma reactor in this embodiment has figure 2 shown structure.

[0172] The process flow of this embodiment is shown in the foregoing specific embodiment, and the structural parameters of the low-temperature plasma reactor are as follows:

[0173] Low temperature plasma reactors include:

[0174] an inner cylinder, which is respectively provided with a reactor inlet, a gas product outlet and a liquid product outlet;

[0175] an outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat conduction medium inlet and a heat conduction medium outlet;

[0176] a central electrode, the central electrode is arranged at the position of the central axis of the inner cylinder, and the material forming the central electrode...

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Abstract

The invention relates to the field of plasma chemistry, and discloses a low-temperature plasma device for decomposing hydrogen sulfide and a method for decomposing hydrogen sulfide. The device contains a gas supply-gas distribution unit, a plasma reaction unit and a product separation unit connected sequentially through pipelines. The plasma reaction unit contains a low-temperature plasma reactor and a plasma power supply. The reactor includes: an inner cylinder, an outer cylinder, a central electrode arranged in the inner cylinder, and a side wall arranged around the inner cylinder or wrapped in the center The outer surface of the electrode or the barrier medium forming the side wall of the inner cylinder, the ground electrode; the thickness L of the discharge air gap 1 with the thickness of the barrier dielectric D 1 The proportional relationship is: L 1 :D 1 =(0.05~100):1. The low-temperature plasma device for decomposing hydrogen sulfide and the method for decomposing hydrogen sulfide provided by the invention can improve the conversion rate of hydrogen sulfide.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a low-temperature plasma device 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 poisoning and deactivation of catalysts in chemical production; in addition, hydrogen sulfide can also harm human health and cause environmental pollution. Therefore, the harmless treatment of a large amount of hydrogen sulfide gas generated in industrial fields such as petroleum, natural gas, coal and mineral processing needs to be solved in terms of process requirements, equipment maintenance and environmental protection requirements. [0003] At present, the Claus process is commonly used in industry to treat hydrogen sulfide, and the method is to partially oxidize hydrogen sulfide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/08C01B3/04C01B17/04
CPCB01J19/088C01B3/04C01B17/0495Y02E60/36
Inventor 张铁张婧任君朋孙峰徐伟石宁朱云峰
Owner CHINA PETROLEUM & CHEM CORP
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