Syngas Production by Combined Biomass Gasification and in Situ Biogas Reforming

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• 作者：Katarina 脜berg ; Linda Pommer ; Anders Nordin
• 刊名：Energy & Fuels
• 出版年：2015
• 出版时间：June 18, 2015
• 年：2015
• 卷：29
• 期：6
• 页码：3725-3731
• 全文大小：315K
• ISSN：1520-5029

文摘

For small- to medium-sized streams of biogas (methane) produced at a biorefinery site where cost-efficient reforming by traditional methods are unavailable, combined biomass gasification and methane reforming could facilitate co-conversion and increase the H₂/CO ratio in the syngas from the gasification plant. In the present work, co-gasification of biomass with CH₄ was evaluated by means of a parametric chemical equilibrium study for both wood/CH₄ and black liquor/CH₄ feedstocks and bench-scale fluidized-bed gasification experiments for a wood/peat/CH₄ fuel mixture. The parametric study indicated that high-temperature, and steam and oxygen addition all facilitate a high conversion rate, i.e., methane reforming. Evaluating the influence of the gasification temperature on CH₄ reforming and increasing the H₂/CO ratio experimentally demonstrated that high temperatures are required for efficient co-conversion.