고분자 전해질 연료전지 적용을 위한 DME 자열개질가스 내 CO제거 공정 특성 연구 = Experiment of CO Cleaning Process in DME Autothermal Reformate Gas for PEMFC Application

다국어 초록 (Multilingual Abstract)

Hydrocarbon is required to be converted to pure hydrogen without carbon monooxide (CO) for polymer exchange membran fuel cell (PEMFC) applications. In this paper, CO cleaning processes as the downstream of Dimethyl ehter (DME) autothermal reforming process were performed in micro-reactors. Our study suggested two kinds of water gas shift (WGS) reaction process: High Temperature shift (HTS) - Low Temperature shift (LTS), Middle temperature shift (MTS). Firstly, using perovskite catalyst for MTS was decreased effieiciency since methanation. Using HTS-LTS the CO concentration was decreased about 2% (N_2 & H_2O free) with the reaction temperature of 420℃ and 235℃ for HTS and LTS, respectively. As the final stage of CO cleaning process, preferential oxidation (PROX) was applied. The amount of additional oxygen need 2 times of stoichiometric at 65℃. The total conversion reforming efficiency of 75% was gained.

참고문헌 (Reference)

1 권준택, "수소연료 중 일산화탄소의 고분자전해질 연료전지에 대한 영향" 한국수소및신에너지학회 19 (19): 291-298, 2008

2 S. H. Jun, "Study on perovskite structure catalyst for water-gas shift reaction" KAIST 2011

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4 Sud-Chemi AG, "Primary Reforming Operating Manual"

5 Ahmed, S., "Hydrogen from hydrocarbon fuels for fuel cell" 26 : 291-301, 2001

6 J. Larmine, "Fuel Cell Systems Explained, 2nd ed" John Wiley & Sons Ltd 239-, 2003