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High-throughput low-temperature plasma reactor and method for decomposing hydrogen sulfide

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

Pending Publication Date: 2019-08-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] One of the objectives of the present invention is to provide a new high-efficiency Flux low-temperature plasma reactor and method for decomposing hydrogen sulfide using the reactor

Method used

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  • High-throughput low-temperature plasma reactor and method for decomposing hydrogen sulfide

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specific Embodiment approach

[0098]Nitrogen gas is introduced into the inner barrel of the high-flux 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 raw material gas containing hydrogen sulfide from the reactor inlet to the inner cylinder of the high-throughput low-temperature plasma reactor, and the raw material gas fills each reaction tube. A plasma discharge field is formed between the central 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 ...

Embodiment 1

[0109] use figure 1 The shown high-flux low-temperature plasma reactor performs hydrogen sulfide decomposition reaction. The specific structure and structural parameters of the high-flux low-temperature plasma reactor are as follows:

[0110] The reactor includes:

[0111] 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 product outlet, and each of the reaction tubes The liquid product produced in the reaction tube can be drawn out from the liquid product outlet, the size of the four reaction tubes is exactly the same, all t...

Embodiment 2

[0141] In this embodiment, a high-throughput low-temperature plasma reactor similar to that of Embodiment 1 is used to carry out the decomposition reaction of hydrogen sulfide. The difference is that in this embodiment:

[0142] All side walls of the inner cylinder are formed by grounding electrodes, and the material for forming the grounding electrodes is stainless steel metal foil;

[0143] The blocking medium is arranged around the inner wall of the inner cylinder;

[0144] The distance L between the outer wall of the central high-voltage electrode and the inner wall of the barrier medium 1 with the thickness of the barrier dielectric D 1 The ratio is 18:1;

[0145] h 1 and the length L of the discharge region containing the barrier dielectric 2 The proportional relationship between is: H 1 :L 2 =1:95.

[0146] In this embodiment, H is passed from the reactor inlet to the inner cylinder of the high-throughput low-temperature plasma reactor. 2S / Ar mixed gas, where H ...

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Abstract

The invention relates to the field of plasma chemistry, and discloses a high-throughput low-temperature plasma reactor and a method for decomposing hydrogen sulfide. The high-throughput low-temperature plasma reactor comprises: an inner cylinder (1) containing at least two reaction pipes (14) arranged side by side; an outer cylinder (2) nested in the outer portion of the inner cylinder (1); centerhigh-voltage electrodes (3) respectively arranged in each reaction pipe (14); a grounding electrode (4) made of a solid electric-conduction material; and a barrier medium, wherein the barrier mediumforms at least part of the side wall of the reaction pipe or is arranged around the inner side walls of each reaction pipe (14). According to the present invention, the high-throughput low-temperatureplasma reactor can be used for the plasma decomposition of hydrogen sulfide, and can generate uniform and efficient dielectric barrier discharge so as to directly decompose hydrogen sulfide to generate hydrogen and sulfur.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a high-throughput low-temperature plasma reactor 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 endangers human health and pollutes the environment. At present, large and medium-sized refineries in my country adopt the traditional Claus method (Claus) to treat 2 S tail gas, and recover sulfur. The method recovers only the sulfur in hydrogen sulfide, but converts the valuable hydrogen into water. From the perspective of comprehensive utilization of resources, hydrogen resources have not been effectively utilized in the traditional hydrogen sulfide recovery process. Therefore, the decomposition of hydrogen sulfide into sulfur and hydrogen has gradually become a technical field that researchers at home and abr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/04C01B17/04
CPCC01B3/04C01B17/043C01B2203/0277Y02E60/36
Inventor 张婧张树才王林石宁张铁孙峰朱云峰金满平
Owner CHINA PETROLEUM & CHEM CORP
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