Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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The Characteristics of Coal Gasification using Microwave Plasma

마이크로웨이브 플라즈마를 이용한 석탄가스화 특성 연구

  • Kim, Doo-Il (Clean Fuel Center, Korea Institute of Energy Research) ;
  • Lee, Jae-Goo (Clean Fuel Center, Korea Institute of Energy Research) ;
  • Kim, Yong-Ku (Clean Fuel Center, Korea Institute of Energy Research) ;
  • Yoon, Sang-Jun (Clean Fuel Center, Korea Institute of Energy Research)
  • 김두일 (한국에너지기술연구원 청정연료연구단) ;
  • 이재구 (한국에너지기술연구원 청정연료연구단) ;
  • 김용구 (한국에너지기술연구원 청정연료연구단) ;
  • 윤상준 (한국에너지기술연구원 청정연료연구단)
  • Received : 2012.01.30
  • Accepted : 2012.02.24
  • Published : 2012.02.28
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Abstract

The investigation of clean and environment-friendly coal utilization technology is actively progressed due to high oil price and serious climate change caused by greenhouse gas emissions. In this study, the plasma gasification was performed using a 6kW microwave plasma unit under various reaction conditions: the particle sizes of coal ($45{\mu}m-150{\mu}m$), $O_2$/fuel ratio (0 - 1.3), and steam/fuel ratio (0 - 1.5). The $H_2$ composition decreases with decreasing coal particle size. With increasing $O_2$/fuel ratio, the $H_2$ composition in the syngas decreased while the $CO_2$ composition increased. As the steam/fuel ratio increased from 0 to 1.5, the $H_2$ composition in the syngas increased while the $CO_2$ composition decreased. From the results, it was proven that the variation of syngas composition greatly affected by $O_2$/fuel ratio than steam/fuel ratio. The $H_2$ composition in the syngas, carbon conversion, and cold gas efficiency increased with increasing plasma power.

Keywords

References

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