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논문 기본 정보

자료유형
학술저널
저자정보
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한국수소및신에너지학회 한국수소및신에너지학회논문집 한국수소 및 신에너지학회 논문집 제24권 제1호
발행연도
2013.2
수록면
12 - 19 (8page)

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A gasification process with pre-combustion CO₂ capture process, which converts coal into environment-friendly synthetic gas, might be promising option for sustainable energy conversion. In the coal gasification for power generation, coal is converted into H₂, CO and CO₂. To reduce the cost of CO₂ capture and to maximize hydrogen production, the removal of CO and the additional production of hydrogen might be needed. In this study, a 2l/min water gas shift system for a coal gasifier has been studied. To control the concentration of major components such as H₂, CO, and CO₂, MFCs were used in experimental apparatus. The gas concentration in these experiments was equal with syngas concentration from dry coal gasifiers (H₂: 25-35, CO: 60-65, CO₂: 5-15 vol%). The operation conditions of the WGS system were 200-400℃, 1-10bar. Steam/Carbon ratios were between 2.0 and 5.0. The commercial catalysts were used in the high temperature shift reactor and the low temperature shift reactor. As steam/carbon ratio increased, the conversion (1-COout/COin) increased from 93% to 97% at the condition of CO: 65, H₂: 30, CO₂: 5%. However the conversion decreased with increasing of gas flow and temperature. The gas concentration from LTS was H₂: 54.7-60.0, CO₂: 38.8-44.9, CO: 0.3-1%.

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