Confirmation method for efficiently and harmlessly degrading SF6 waste gas through dielectric barrier discharge

A technology of dielectric barrier discharge and SF6, which is applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of single research point, low energy efficiency of degradation, and has not yet reached the level of industrial application, and achieve scientific configuration and degradation The effect of high energy efficiency

Inactive Publication Date: 2021-06-18
GUIZHOU POWER GRID CO LTD
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Problems solved by technology

Researchers have conducted research from the perspectives of discharge conditions, gas composition, gas flow rate, catalyst, and reactor design, and summarized certain rules from one or more of the above aspects, but the research points are relatively single, and the energy efficiency of degradation is low. And they are all laboratory-scale research, which has not yet reached the level of industrial application

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  • Confirmation method for efficiently and harmlessly degrading SF6 waste gas through dielectric barrier discharge
  • Confirmation method for efficiently and harmlessly degrading SF6 waste gas through dielectric barrier discharge
  • Confirmation method for efficiently and harmlessly degrading SF6 waste gas through dielectric barrier discharge

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Embodiment 1

[0045] Embodiment 1: as Figure 1-Figure 2 As shown, the confirmation method for the efficient and harmless degradation of SF6 waste gas by dielectric barrier discharge includes the equipment used to degrade SF6 by dielectric barrier discharge 6 The experimental platform and analysis and detection system, dielectric barrier discharge degradation SF 6 The system includes a gas distribution system, a DBD reactor and a power supply system. The gas outlet of the gas distribution system is connected to the inlet of the DBD reactor. The DBD reactor is connected to a power system. The gas outlet of the DBD reactor is connected to the analysis and detection system. The detection system includes electrical parameter detection system, chemical parameter detection system and optical parameter detection system; analysis detection system includes oscilloscope, gas chromatograph (Gas Chromatograph, GC), Fourier Transform Infrared Spectrometer (Fourier Transform Infrared Spectrometer, FTIR),...

Embodiment 2

[0046] Embodiment 2: A method for confirming the efficient and harmless degradation of SF waste gas by dielectric barrier discharge, the method comprising the following steps:

[0047] (1) Build dielectric barrier discharge to degrade SF 6 experimental platform;

[0048] (2) Obtain dielectric barrier discharge to degrade SF 6 The experimental platform of the DBD reactor for the degradation of SF 6 Discharge parameters and experimental parameters, discharge parameters include applied voltage, external power supply and electrode materials, experimental parameters include initial concentration, applied gas type and its ratio, catalyst type, and morphology;

[0049] (3) Use the gas distribution system to perform SF on the DBD reactor 6 Gas and background gas distribution;

[0050] (4) Use the control variable method to change the SF that affects the dielectric barrier discharge decomposition 6 Various factors contribute to the SF 6 Forward decomposition experiment research, ...

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Abstract

The invention discloses a confirmation method for efficiently and harmlessly degrading SF6 waste gas through dielectric barrier discharge. The method comprises the following steps: building an experimental platform; acquiring discharge parameters and experiment parameters of SF6 degradation by using a DBD reactor of the experiment platform; carrying out gas distribution on background gas and SF6 gas; by adopting a control variable method, promoting SF6 forward decomposition experiment research to obtain optimal condition for decomposing SF6 ; analyzing the chemical reaction mechanism of the SF6 gas under discharge degradation by combining a density functional theory and chemical reaction kinetics; and establishing a physical model for degrading SF6 through dielectric barrier discharge according to various basic physical coefficients of the physical model. According to the invention, the SF6 gas is fully degraded through a dielectric barrier discharge SF6 degradation system, and products obtained after SF6 degradation are comprehensively detected and analyzed through an analysis and detection system, so that optimal degradation parameter configuration and degradation equipment configuration are obtained, the configuration is more scientific, and the degradation energy efficiency is higher.

Description

technical field [0001] The invention relates to a method for confirming the efficient and harmless degradation of SF6 waste gas by dielectric barrier discharge, and belongs to the technical field of SF6 waste gas degradation. Background technique [0002] SF 6 Due to its unique physical and chemical properties, gases are widely used in industries such as electric power, metal smelting, semiconductor manufacturing, and aerospace. However SF 6 The gas is a very strong greenhouse gas, and its greenhouse effect potential value GWP (Global Warming Potential) is CO 2 23,500 times that of , and has a lifetime of about 3,200 years in the atmosphere. In the past 5 years, SF 6 The content in the global atmosphere has increased by 20%. In the "Kyoto Protocol" (Kyoto Protocol) signed by the parties to the United Nations Convention on Climate Change in 1997, the SF 6 gas is listed as one of the six restricted-use greenhouse gases. The Paris Agreement signed at the end of 2015 seeks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/32B01D53/30
CPCB01D53/323B01D53/30B01D2259/818B01D2257/30B01D2257/204Y02C20/30
Inventor 张英王明伟刘喆牧灝张晓星余鹏程
Owner GUIZHOU POWER GRID CO LTD
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