KEPCO Journal on Electric Power and Energy

Korea Electric Power Corporation (한국전력공사)
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Conceptual Design and Operation Results for SF6 Decomposition and Pollution Control System

SF6 분해 및 무해화 시스템의 개념 설계 및 운영 결과

  • Joongwon, Lee (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Miyeong, Kim (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Jiho, Ahn (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Younghwan, Byun (KEPCO Research Institute, Korea Electric Power Corporation)
  • Received : 2022.08.17
  • Accepted : 2022.09.16
  • Published : 2022.12.30
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Abstract

SF6 is used as an insulating gas because of its excellent electrical insulation properties, non-toxicity, and non-inflammability. On the other hand, the global warming potential of SF6 is 23,900 times higher than that of CO2. The Korea electric power cooperation (KEPCO) is responsible for 80% of the domestic SF6 usage, and approximately 6,000 tons are currently charged in electrical and power facilities. KEPCO will gradually replace the insulating gas with SF6-free gas from 2023. SF6 decomposition facilities are required because more than 60 tons of SF6 will need to be disposed of annually from existing equipment. This study developed a novel decomposition and pollution control system that can process 60 tons of SF6 per year. This facility can decompose more than 97.7% of SF6, with the emissions of hazardous and toxic materials below the legal limit.

Keywords

Acknowledgement

This study was supported by the "SF6 decomposition and pollution control technology" project managed by the Korea Electric Power Corporation (KEPCO). Grant number: R20VA01.

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