High-flux 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 plasma chemistry, can solve the problems of high energy consumption for decomposition and low conversion rate of hydrogen sulfide, and achieve high conversion rate and long-term operation

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 high-throughput low-temperature plasma system for decomposing hydrogen sulfide and its application in order to overcome the defects of low conversion rate of hy...

Method used

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  • High-flux low-temperature plasma system for decomposing hydrogen sulfide, and method for decomposing hydrogen sulfide
  • High-flux low-temperature plasma system for decomposing hydrogen sulfide, and method for decomposing hydrogen sulfide
  • High-flux low-temperature plasma system for decomposing hydrogen sulfide, and method for decomposing hydrogen sulfide

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specific Embodiment approach

[0093]Nitrogen gas is passed from the reactor inlet to the inner cylinder of the high-flux plasma reaction device 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 raw material gas containing hydrogen sulfide from the reactor inlet to the inner cylinder of the high-throughput plasma reaction device. The raw material gas fills each reaction tube. A plasma discharge field is formed between the high voltage 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 ...

Embodiment 1

[0147] use has image 3 The high-throughput low-temperature plasma system for decomposing hydrogen sulfide in the flow chart shown in the flow chart performs the hydrogen sulfide decomposition reaction, and the low-temperature plasma reactor in this embodiment has figure 1 structure shown.

[0148] 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:

[0149] Low temperature plasma reactors include:

[0150] An inner cylinder, the inner cylinder is respectively provided with a reactor inlet, a gas product outlet and a liquid product outlet, and the inner cylinder contains 4 reaction tubes arranged side by side, and the top and bottom of each of the reaction tubes communicate with each other correspondingly, The raw materials that enter from the inlet of the reactor can enter into each of the reaction tubes respectively, and the gaseous products produc...

Embodiment 2

[0169] use has image 3 The high-throughput low-temperature plasma system for decomposing hydrogen sulfide in the flow chart shown in the flow chart performs the hydrogen sulfide decomposition reaction, and the low-temperature plasma reactor in this embodiment has figure 2 structure shown.

[0170] 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:

[0171] Low temperature plasma reactors include:

[0172] An inner cylinder, the inner cylinder is respectively provided with a reactor inlet, a gas product outlet and a liquid product outlet, and the inner cylinder contains 4 reaction tubes arranged side by side, and the top and bottom of each of the reaction tubes communicate with each other correspondingly, The raw materials that enter from the inlet of the reactor can enter into each of the reaction tubes respectively, and the gaseous products produ...

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Abstract

The invention relates to the field of plasma chemistry, and discloses a high-flux 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 plasma reaction unit comprises a low temperature plasma reactor, the reactor comprises an inner cylinder (1) containing a reaction pipe (14), an outer cylinder (2) nested in the outer portion of the inner cylinder, a center high-voltage electrode (3) arranged in the reaction pipe, agrounding electrode (4) arranged on the side wall of the reaction pipe or forming the side wall of the reaction pipe, and a barrier medium (6), and the barrier medium forms the side wall of the reaction pipe, or is arranged around the side wall of the reaction pipe, or is arranged on the outer surface of the center high-voltage electrode (3). According to the present invention, the system and themethod have high hydrogen sulfide conversion rate.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a high-throughput 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 partial...

Claims

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Application Information

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IPC IPC(8): B01D53/32C01B17/04C01B3/04
CPCB01D53/32C01B17/0495C01B3/04B01D2259/818B01D2257/304Y02E60/36
Inventor 张婧王林金满平任君朋张铁石宁徐伟
Owner CHINA PETROLEUM & CHEM CORP
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