Microwave-enhanced methane combined reforming by CO₂ and H₂O into syngas production on biomass-derived char

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• 作者：Longzhi Li^a ; Huigang Wang^a ; Xiaowei Jiang^a ; Zhanlong Song^b ; ^{zlsong@sdu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Xiqiang Zhao^b ; Chunyuan Ma^b
• 关键词：Microwave ; Combined reforming ; Syngas ; Bio-char
• 刊名：Fuel
• 出版年：2016
• 出版时间：1 December 2016
• 年：2016
• 卷：185
• 期：Complete
• 页码：692-700
• 全文大小：1658 K

文摘

Methane reforming by CO₂ and H₂O is performed in this study, using the char derived from biomass as catalyst. The catalytic effect of bio-char on CH₄ reforming is examined by changing feed composition, reforming temperature and heating method. At an appropriate H₂O/CO₂ ratio, combined reforming achieves higher CH₄ conversion at the same temperature than dry reforming, and it also brings about an increase in the H₂/CO ratio of syngas production. The results indicates that synergetic reaction of CH₄–H₂O and CH₄–CO₂ can be reached in combined reforming at the temperature of 800–1000 °C. Microwave heating presents a promising method to enhance the reforming reaction. Bio-char exhibits better performance for combined reforming, because it optimizes the competition between carbon deposition and carbon consumption. This is evidenced by less equivalent carbon consumption and the slower deterioration of porous properties. Carbon deposition and carbon consumption from the catalyst contribute to the deactivation of bio-char.