Minimization of Carbon Monoxide in the High Efficient Catalytic Shift for Fuel Cell Applications

연료전지용 고효율 촉매전이 반응의 일산화탄소 저감

  • Park, Heon (BK21 Team for Hydrogen Production, Department of Environmental Engineering, Chosun University) ;
  • Kim, Seong-Cheon (BK21 Team for Hydrogen Production, Department of Environmental Engineering, Chosun University) ;
  • Chun, Young-Nam (BK21 Team for Hydrogen Production, Department of Environmental Engineering, Chosun University)
  • 박헌 (조선대학교 환경공학부.BK21 바이오가스기반 수소생산 사업팀) ;
  • 김성천 (조선대학교 환경공학부.BK21 바이오가스기반 수소생산 사업팀) ;
  • 전영남 (조선대학교 환경공학부.BK21 바이오가스기반 수소생산 사업팀)
  • Published : 2007.05.31

Abstract

The generation of high-purity hydrogen from hydrocarbon fuels is essential for efficient operation of fuel cell. In general, most feasible strategies to generate hydrogen from hydrocarbon fuels consist of a reforming step to generate a mixture of $H_2$, CO, $CO_2$ and $H_2O$(steam) followed by water gas shift(WGS) and CO clean-up steps. The WGS reaction that shifts CO to $CO_2$ and simultaneously produces another mole of $H_2$ was carried out in a two-stage catalytic conversion process involving a high temperature shift(HTS) and a low temperature shift(LTS). In the WGS operation, gas emerges from the reformer is taken through a high temperature shift catalyst to reduce the CO concentration to about $3\sim4%$ followed to about 0.5% via a low temperature shift catalyst. The WGS reactor was designed and tested in this study to produce hydrogen-rich gas with CO to less than 0.5%.

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