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A Study on the Efficient Degradation of Sulfur Hexafluoride by Pulsed Dielectric Barrier Discharge Synergistic Active Gas

Author

Listed:
  • Ying Zhang

    (Scientific Research Institute of Electric Power, Guizhou Power Grid Company Ltd., Guiyang 550000, China)

  • Mingwei Wang

    (Scientific Research Institute of Electric Power, Guizhou Power Grid Company Ltd., Guiyang 550000, China)

  • Yalong Li

    (Scientific Research Institute of Electric Power, Guizhou Power Grid Company Ltd., Guiyang 550000, China
    Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China)

  • Lei Yu

    (Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China)

  • Zhaodi Yang

    (Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China)

  • Kun Wan

    (Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China)

Abstract

SF 6 is a strong greenhouse effect gas, which is widely used in high-voltage electrical equipment such as circuit breakers and high-voltage switchgear because of its excellent insulation performance and arc extinguishing ability. In recent years, the use and emission of SF 6 have been rising, and with the proposal of the dual carbon strategic goal, its harmless degradation has become an urgent problem to be solved. In this paper, SF 6 was degraded by pulsed DBD plasma technology and O 2 . Studies have shown that the addition of O 2 can effectively promote the degradation of SF 6 . With the increase in the added O 2 content, the DRE and EY of SF 6 first increased and then decreased. Under the conditions of the input power of 50 W, SF 6 concentration of 2%, and gas flow rate of 50 mL/min, the reaction system obtained the highest DRE and EY of 58.40% and 5.24 g/kWh when the O 2 content was 1%, respectively. In the SF 6 /Ar/O 2 /H 2 O system, the addition of H 2 O could improve the product selectivity of SO 2 F 2 , and when the O 2 concentration was 1%, the highest selectivity of SO 2 F 2 was 48.96%, and the concentration was 8006.76 ppm. The addition of O 2 inhibited the production of SO 2 , and with the addition of the O 2 system, SO 2 F 2 and SOF 4 were the main components of degradation products; however, there were also SOF 2 , SO 2 , SiF 4, SF 4 , etc. In this paper, the decomposition path of O 2 under SF 6 was analyzed in detail according to infrared spectroscopy and decomposition products.

Suggested Citation

  • Ying Zhang & Mingwei Wang & Yalong Li & Lei Yu & Zhaodi Yang & Kun Wan, 2024. "A Study on the Efficient Degradation of Sulfur Hexafluoride by Pulsed Dielectric Barrier Discharge Synergistic Active Gas," Energies, MDPI, vol. 17(15), pages 1-12, July.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:15:p:3648-:d:1442023
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    References listed on IDEAS

    as
    1. Wang, Xiaoling & Gao, Yuan & Zhang, Shuai & Sun, Hao & Li, Jie & Shao, Tao, 2019. "Nanosecond pulsed plasma assisted dry reforming of CH4: The effect of plasma operating parameters," Applied Energy, Elsevier, vol. 243(C), pages 132-144.
    2. Sheng Zhou & Fei Teng & Qing Tong, 2018. "Mitigating Sulfur Hexafluoride (SF 6 ) Emission from Electrical Equipment in China," Sustainability, MDPI, vol. 10(7), pages 1-17, July.
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