Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-reaction-tube plasma device and method for decomposing hydrogen sulfide

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

Pending Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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 As well as a multi-reaction tube low-temperature plasma reaction device for reducing decomposition energy consumption and a method for decomposing hydrogen sulfide using the reaction device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-reaction-tube plasma device and method for decomposing hydrogen sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] adopted with figure 1 The shown low temperature plasma reaction equipment is similar to the structure of the reaction equipment for hydrogen sulfide decomposition reaction. The specific structure and structural parameters of the low temperature plasma reaction equipment are as follows:

[0115] Reaction equipment includes:

[0116] The first cavity is respectively provided with a reactor inlet, a gas product outlet and a liquid product outlet, and the first cavity contains 4 reaction tubes arranged side by side, and each of the reaction tubes The top and the bottom of the corresponding communication respectively, make the raw material that enters by described reactor inlet can respectively enter in each described reaction tube, and make the gaseous product that produces in each described reaction tube can be drawn out by described gaseous product outlet, And the liquid product produced in each of the reaction tubes can be drawn out from the outlet of the liquid product...

Embodiment 2

[0144] The present embodiment adopts the plasma reactor similar to embodiment 1 to carry out the decomposition reaction of hydrogen sulfide, the difference is, in the present embodiment:

[0145] All side walls of each reaction tube are formed by external electrodes, the material of which is stainless steel foil, and the external electrodes are connected to a high-voltage power supply; and the internal electrodes are grounded.

[0146] The barrier medium is arranged around the inner wall of each reaction tube;

[0147] L 2 with D 1 ratio of 15:1; and H 1 :L 3 =1:85;

[0148] In this embodiment, H is passed from the reactor inlet to the inner cylinder of the high-throughput low-temperature plasma reactor. 2 S / H 2 mixed gas, where H 2 The volume fraction of S is 75%, the flow rate of the mixed gas is controlled so that the average residence time of the gas in the discharge area is 17.2s, and the pressure is 0.03MPa. h 2 S / H 2 After the mixed gas was passed into the rea...

Embodiment 3

[0152] The present embodiment adopts the plasma reactor similar to embodiment 1 to carry out the decomposition reaction of hydrogen sulfide, the difference is, in the present embodiment:

[0153] All side walls of each reaction tube are formed by external electrodes, the material forming the external electrodes is copper foil, the external electrodes are grounded, and the internal electrodes are connected to a high-voltage power supply;

[0154] The barrier medium is arranged around the center of each reaction tube without directly contacting the side wall of the reaction tube;

[0155] L 2 with D 1 The ratio of 0.5:1; and H 1 :L 3 =1:220;

[0156] In this embodiment, H is passed from the reactor inlet to the inner cylinder of the high-throughput low-temperature plasma reactor. 2 S / Ar mixed gas, where H 2 The volume fraction of S is 65%, and the flow rate of the mixed gas is controlled so that the average residence time of the gas in the discharge area is 11.2s, and the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of plasma chemistry, and discloses a multi-reaction-tube plasma device and a method for decomposing hydrogen sulfide; the multi-reaction-tube plasma device comprises: a first cavity (1) formed by at least two parallel reaction tubes; a second cavity (2) that is nested in the first cavity (1); and an inner electrode (3), an outer electrode (4) and a blocking medium (6) that are respectively arranged in each reaction tube. The multi-reaction-tube plasma device provided by the invention can be used for plasma decomposition of hydrogen sulfide, and the reactor can generate uniform and efficient dielectric barrier discharge, so that hydrogen sulfide is directly decomposed into hydrogen and sulfur.

Description

technical field [0001] The invention relates to the field of plasma chemistry, in particular to a multi-reaction tube plasma 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. [0003] Therefore, the decomposition of hydrogen sulfide into sulfur and hydrogen has gradually become a technical field that researchers at home and abroad ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/04C01B17/04
CPCC01B3/04C01B17/0495Y02E60/36
Inventor 张婧张树才张铁徐伟任君朋李亚辉周明川石宁
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com