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Low temperature plasma reaction equipment and hydrogen sulfide decomposing method

A low-temperature plasma and reaction equipment technology, applied in the field of ion chemistry, can solve the problems of low hydrogen sulfide conversion rate and high decomposition energy consumption, and achieve the effects of flexible temperature control, high continuous and stable operation, and long-term operation.

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] The purpose of the present invention is to overcome the defects of low hydrogen sulfide conversion rate and high decomposition energy consumption in the low-temperature plasma reaction equipment provided by the prior art when it is used for the decomposition of hydrogen sulfide, and provide a new method that can improve the conversion rate of hydrogen sulfide And low-temperature plasma reaction equipment for reducing decomposition energy consumption and a method for decomposing hydrogen sulfide using the reaction equipment

Method used

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  • Low temperature plasma reaction equipment and hydrogen sulfide decomposing method
  • Low temperature plasma reaction equipment and hydrogen sulfide decomposing method

Examples

Experimental program
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Effect test

Embodiment 1

[0107] use figure 1 The shown low-temperature plasma reaction equipment performs hydrogen sulfide decomposition reaction, and the specific structure and structural parameters of the low-temperature plasma reaction equipment are as follows:

[0108] Reaction equipment includes:

[0109] An inner cylinder, the inner cylinder is respectively provided with a reactant inlet, a gas product outlet and a liquid product outlet, wherein the side wall of the inner cylinder is formed by a ground electrode, and the material forming the ground electrode is stainless steel metal foil,

[0110] An outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat transfer medium inlet and a heat transfer medium outlet;

[0111] A central electrode, the central electrode is arranged at the central axis of the inner cylinder, and the material forming the central electrode is a stainless steel metal rod;

[0112] The lower edge ...

Embodiment 2

[0140] The present embodiment adopts the plasma reaction equipment similar to embodiment 1 to carry out the decomposition reaction of hydrogen sulfide, the difference is, in the present embodiment:

[0141] The ground electrode is arranged on the inner wall of the inner cylinder, and the material forming the ground electrode is stainless steel metal foil;

[0142] L 1 with the thickness of the barrier dielectric D 1 The ratio is 20:1;

[0143] h 1 and the length L of the discharge region containing the barrier dielectric 2 The proportional relationship between is: H 1 :L 2 =1:300.

[0144] In this embodiment, H is introduced into the inner cylinder of the low-temperature plasma reaction equipment from the reactant inlet. 2 S / Ar mixed gas, where H 2 The volume fraction of S is 30%, and the flow rate of the mixed gas is controlled so that the average residence time of the gas in the discharge area is 9.6s. h 2 After the S / Ar mixed gas was passed into the reaction equip...

Embodiment 3

[0148] use figure 2 The shown low-temperature plasma reaction equipment performs hydrogen sulfide decomposition reaction, and the specific structure and structural parameters of the low-temperature plasma reaction equipment are as follows:

[0149] Reaction equipment includes:

[0150]4 inner cylinders, the tops and bottoms of each inner cylinder communicate with each other correspondingly, the dimensions of the four inner cylinders are exactly the same, the side walls of the inner cylinders are formed by grounding electrodes, and the material for forming the grounding electrodes is stainless steel metal foil ;

[0151] An outer cylinder, the outer cylinder is nested outside the inner cylinder, and the outer cylinder is respectively provided with a heat transfer medium inlet and a heat transfer medium outlet, and the heat transfer medium introduced by the heat transfer medium inlet can be distributed in each of the between the inner cylinders, and the heat transfer medium i...

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Abstract

The present invention relates to the field of plasma chemistry, and discloses low temperature plasma reaction equipment and a hydrogen sulfide decomposing method. The reaction equipment comprises: aninner cylinder (1); an outer cylinder (2) nested on the outer portion of the inner cylinder (1); a center electrode (3) arranged in the inner cylinder (1); a grounding electrode (4) formed by a solidelectric-conduction material, wherein the grounding electrode forms at least part of the side wall of the inner cylinder or is arranged around the inner side wall of the inner cylinder; and a barriermedium arranged between the grounding electrode and the center electrode. According to the present invention, the low temperature plasma reaction equipment can achieve the continuous and stable performing of the hydrogen sulfide decomposition process at a significantly high hydrogen sulfide conversion rate, and can achieve long-cycle operation.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a low-temperature 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/04C01B17/04B01J19/08
CPCC01B3/04C01B17/0495B01J19/088Y02E60/36
Inventor 任君朋张婧孙峰张铁徐伟朱云峰
Owner CHINA PETROLEUM & CHEM CORP
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