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

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)
Publication Information
Journal of Korean Society of Environmental Engineers / v.29, no.5, 2007 , pp. 528-532 More about this Journal
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%.
Keywords
Fuel Cell; High Temperature Shift; Low Temperature Shift; CO Concentration;
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Times Cited By KSCI : 1  (Citation Analysis)
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