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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Measurement and Analysis of Coal Conversion Efficiency for a Coal Recirculating Fuel Cell Simulator

석탄순환형 연료전지 모사시스템용 석탄전환율 측정 및 분석법개발에 관한 연구

  • Lee, Sangcho (Graduate Program, School of Mechanical Engineering, Pusan National University) ;
  • Kim, Chihwan (Hadong Thermal Power Plant, Korea Southern Power Co. (KOSPO)) ;
  • Hwang, Munkyeong (Graduate Program, School of Mechanical Engineering, Pusan National University) ;
  • kim, Minseong (Graduate Program, School of Mechanical Engineering, Pusan National University) ;
  • Kim, Kyubo (Pusan Clean Coal Center (PC3), Pusan National University) ;
  • Jeon, Chunghwan (School of Mechanical Engineering, Pusan National University) ;
  • Song, Juhun (School of Mechanical Engineering, Pusan National University)
  • 이상초 (부산대학교 기계공학부) ;
  • 김치환 (한국남부발전 화동화력) ;
  • 황문경 (부산대학교 기계공학부) ;
  • 김민성 (부산대학교 기계공학부) ;
  • 김규보 (부산대학교 화력 발전 에너지 분석 기술센터) ;
  • 전충환 (부산대학교 기계공학부) ;
  • 송주헌 (부산대학교 기계공학부)
  • Received : 2012.09.20
  • Accepted : 2012.10.26
  • Published : 2012.10.31
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Abstract

There is a new power generation system such as direct coal fuel cell (DCFC) with a solid oxide electrolyte operated at relatively high temperature. In the system, it is of great importance to feed coal continuously into anodic electrode surface for its better contact, otherwise it would reduce electrochemical conversion of coal. For that purpose, it is required to improve the electrochemical conversion efficiency by using either rigorous mixing condition such as fluidized bed condition or just by recirculating coal particle itself successively into the reaction zone of the system. In this preliminary study, we followed the second approach to investigate how significantly particle recycle would affect the coal conversion efficiency. As a first phase, coal conversion was analyzed and evaluated from the thermochemical reaction of carbon with air under particle recirculating condition. The coal conversion efficiency was obtained from raw data measured by two different techniques. Effects of temperature and fuel properties on the coal conversion are specifically examined from the thermochemical reaction.

Keywords

References

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