Method for decomposing hydrogen sulfide through plasma

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

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 purpose of the present invention is to provide a new method for plasma decomposing hydrogen sulfide in order to overcome the defects of low

Method used

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  • Method for decomposing hydrogen sulfide through plasma
  • Method for decomposing hydrogen sulfide through plasma
  • Method for decomposing hydrogen sulfide through plasma

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specific Embodiment approach

[0088] Nitrogen gas is introduced into the inner cylinder of the 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 raw material gas containing hydrogen sulfide into the inner cylinder of the plasma reactor from the inlet of the reactor. The raw material gas fills each reaction tube. After the raw material gas flow is stable, the high-voltage power supply is connected, and the central high-voltage electrode and the central high-voltage electrode are connected by adjusting the voltage and frequency. A plasma discharge field is formed between the ground electrodes. The hydrogen su...

Embodiment 1

[0137] use has image 3 The plasma system for decomposing hydrogen sulfide shown in the flow chart carries out the method for plasma decomposing hydrogen sulfide of the present invention, and the plasma reactor in this embodiment has figure 1 structure shown.

[0138] The process flow of the present embodiment is as shown in the aforementioned specific embodiments, and the structural parameters of the plasma reactor are as follows:

[0139] Plasma reactors include:

[0140] 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 respectively , so that the raw materials entering by the reactor inlet can enter into each of the reaction tubes respectively, and the gaseous products produced in each of the reaction tubes can be drawn out from the gas p...

Embodiment 2

[0152] use has image 3 The plasma system for decomposing hydrogen sulfide shown in the flow chart carries out the method for plasma decomposing hydrogen sulfide of the present invention, and the plasma reactor in this embodiment has figure 2 structure shown.

[0153] The process flow of the present embodiment is as shown in the aforementioned specific embodiments, and the structural parameters of the plasma reactor are as follows:

[0154] Plasma reactors include:

[0155] 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 produced in each of the reaction tubes can be drawn out from the...

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Abstract

The invention relates to the field of plasma chemistry, and discloses a method for decomposing hydrogen sulfide through plasma. The method comprises: introducing a hydrogen sulfide-containing raw material gas into a plasma system containing a plasma reactor under dielectric barrier discharge conditions, and carrying out a hydrogen sulfide decomposition reaction, wherein the dielectric barrier discharge 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 0-800 DEGC and a reaction pressure of -0.06-0.6 MPa, and the residence time of the reactant in the plasma reactor is 1*10<-5>-120 s. According to the present invention, with the method, by using the specific discharge conditions and the hydrogen sulfide decomposition reaction conditions, the high hydrogen sulfide conversion rate under the dielectric barrier discharge conditions can be achieved.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a method for decomposing hydrogen sulfide by plasma. 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. Although this meth...

Claims

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Application Information

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IPC IPC(8): C01B17/04C01B3/04
CPCC01B3/04C01B17/0495Y02E60/36
Inventor 张婧徐伟张铁任君朋朱云峰石宁孙峰
Owner CHINA PETROLEUM & CHEM CORP
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