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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Performance Analysis of Off-Gas/Syngas Combustor for Thermal Management of High Temperature Fuel Cell System

고온형 연료전지 열관리를 위한 배기가스 연소기 성능시험

  • 이상민 (한국기계연구원 신재생청정시스템연구실) ;
  • 이연화 (한국기계연구원 신재생청정시스템연구실) ;
  • 안국영 (한국기계연구원 신재생청정시스템연구실) ;
  • 유상석 (충남대학교 기계공학과)
  • Received : 2010.03.02
  • Accepted : 2010.06.25
  • Published : 2010.06.30
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Abstract

Anode off-gas of high temperature fuel cell still contains combustible components such as hydrogen, carbon monoxide and hydrocarbon. In this study, a catalytic combustor has been applied to the high temperature fuel cell so that the combustion of anode-off gas can be boosted up. Since the performance of catalytic combustor directly depends on the combustion catalyst, this study is designed to perform the experimental investigation on the combustion characteristics of the three commercial catalysts with a different composition. Screening tests with three catalysts are preceded before the performance examination since it is necessary to determine the most suitable catalyst for design configuration of the catalytic combustor. The performance analysis shows that methane conversion rate strongly depends on gas hourly space velocity (GHSV) as well as inlet gas temperature. Additionally, the GSHV optimization results show that the optimum GHSV will be in the range between 18,000 $hr^{-1}$ and 36,000 $hr^{-1}$. It is also shown that the minimum inlet temperature of catalytic reaction of methane is from $100^{\circ}C$ to $150^{\circ}C$.

Keywords

References

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