Hydrogen production and carbon dioxide enrichment using a catalytic membrane reactor with Ni metal catalyst and Pd-based membrane

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• 作者：Kyung-Ran Hwang ; Chun-Boo Lee ; Shin-Kun Ryi ; Jong-Soo Park ; ^{deodor@kier.re.kr}
• 关键词：Hydrogen ; Water-gas shift reaction ; Catalytic membrane reactor ; Carbon capture and storage ; Nickel catalyst ; Pd-based membrane
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 期刊代码：42_03603199
• 类别：ch
• 出版时间：April, 2012
• 卷：37
• 期：8
• 页码：6626-6634
• 文件大小：997 K

摘要

We prepared a catalytic membrane reactor (CMR) by adopting a high-performance metal catalyst and Pd-Au membrane to investigate the possibility of hydrogen production concurrently with carbon dioxide enrichment (up to >80%) in a single-stage reactor from a simulated syngas of a coal gasification, via simultaneous WGS reaction and hydrogen separation process. The CO conversion was above 99%and the H₂ recovery was above 94%at del-P聽=聽30聽bar in a CMR. The best result for the concentration of the enriched CO₂ in the retentate side was 85.3%under the conditions of 350聽掳C, del-P聽=聽30聽bar and steam to carbon ratio of 2.0. These results show promise for a feasible simplified process able to achieve CO removal from a high-concentration CO mixture gas coming out of coal gasification via a water-gas shift reaction (WGS), to separate hydrogen and also to enrich CO₂ for pre-combustion capture and storage of CO₂ (CCS) in substitution for the conventional WGS and CO₂ separation stages in integrated gasification and combined cycle process integrated with CCS.