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Grid type plasma reaction apparatus and hydrogen sulfide decomposing method

A reaction device and plasma technology, applied in the field of plasma chemistry, can solve the problems of high energy consumption, inability to achieve large flow rate, low conversion rate of hydrogen sulfide, etc., achieve high conversion rate of hydrogen sulfide, realize long-term operation, and improve conversion rate effect

Pending 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

[0015] The purpose of the present invention is to provide a new grille for overcoming the defects of low hydrogen sulfide conversion rate, high energy consumption and inability to realize large-flow hydrogen sulfide treatment when hydrogen sulfide is decomposed into hydrogen and elemental sulfur in the prior art Type plasma reaction device and method for decomposing hydrogen sulfide using the reaction device

Method used

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  • Grid type plasma reaction apparatus and hydrogen sulfide decomposing method
  • Grid type plasma reaction apparatus and hydrogen sulfide decomposing method
  • Grid type plasma reaction apparatus and hydrogen sulfide decomposing method

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specific Embodiment approach

[0104] Nitrogen gas is passed from the reactant inlet to the inner cylinder of the grid-type 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 the raw material gas containing hydrogen sulfide from the reactant inlet to the inner cylinder of the grid-type plasma reaction device. The raw material gas is filled in each reaction tube. A plasma discharge field is formed between the 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 inner...

Embodiment 1

[0117] use figure 1 The grid-type plasma reaction device shown is for hydrogen sulfide decomposition reaction. The specific structure and structural parameters of the grid-type plasma reaction device are as follows:

[0118] The reaction unit includes:

[0119] an inner cylinder, the inner cylinder is respectively provided with a reactant inlet and a product outlet;

[0120] an outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat-conducting medium inlet and a heat-conducting medium outlet, and the heat-conducting medium introduced by the heat-conducting medium inlet can surround the inner cylinder the outer periphery of the cylinder, and the heat transfer medium can be drawn out from the heat transfer medium outlet;

[0121] High-voltage electrodes, the high-voltage electrodes are arranged in the inner cylinder, and the high-voltage electrodes are arranged in five layers in the inner cylinder; in...

Embodiment 2

[0135] This embodiment adopts figure 2 The grid-type plasma reaction device shown is for hydrogen sulfide decomposition reaction. The specific structure and structural parameters of the grid-type plasma reaction device are as follows:

[0136] The reaction unit includes:

[0137] an inner cylinder, the inner cylinder is respectively provided with a reactant inlet and a product outlet;

[0138] an outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat-conducting medium inlet and a heat-conducting medium outlet, and the heat-conducting medium introduced by the heat-conducting medium inlet can surround the inner cylinder the outer periphery of the cylinder, and the heat transfer medium can be drawn out from the heat transfer medium outlet;

[0139] High-voltage electrodes, the high-voltage electrodes are arranged in the inner cylinder, and the high-voltage electrodes are arranged in five layers in th...

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Abstract

The invention relates to the field of plasma chemistry, and discloses a grid type plasma reaction apparatus and a hydrogen sulfide decomposing method. The grid type plasma reaction apparatus comprises: an inner cylinder (1); an outer cylinder (2) nested on the outer portion of the inner cylinder (1); high-voltage electrodes (3) and grounding electrodes (4) arranged in the inner cylinder (1); and abarrier medium (6) arranged on the outer surface of the high-voltage electrode (3) and / or the grounding electrode (4), wherein various high-voltage electrode layers and various grounding electrode layers are arranged in a staggered manner so as to make the upper layers and / or lower layers of each high-voltage electrode layer be the grounding electrode layers, and a gap is arranged between the adjacent high-voltage electrode layer and grounding electrode layer. According to the present invention, the grid type plasma reaction apparatus has advantages of high hydrogen sulfide conversion rate, low energy consumption and high-flow hydrogen sulfide treatment.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a grid type plasma reaction device 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 abroad pay close ...

Claims

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Application Information

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IPC IPC(8): B01D53/32C01B3/04C01B17/04
CPCB01D53/323C01B17/0495C01B3/04C01B2203/0277B01D2259/818Y02E60/36
Inventor 徐伟张婧张铁任君朋朱云峰石宁金满平李亚辉
Owner CHINA PETROLEUM & CHEM CORP
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