Fe/CaO载氧体作用下生物质化学链气化研究

doi:10.3976/j.issn.1002-4026.2019.05.012

Abstract

Abstract: The chemical looping gasification of biomass is a promising and efficient biomass gasification technology. During this process, oxygen carriers (OCs) could play the oxygen-providing and tar-reforming roles; therefore, OC selection is a crucial factor for the chemical looping gasification of biomass. To improve the redox characteristics of the OC and optimize the yield of the syngas product, the OCs of Fe/CaO with different concentrations were prepared using the mechanical mixture and impregenation methods for biomass chemical looping gasification and studied in this article. Multiple techniques, such as XRD, CO₂-TPD and H₂-TPR were performed to analyze the characterization of the Fe/CaO OCs. The biomass chemical looping gasification experiments were conducted on a fixed bed reactor. The results denoted that the gas conversion rate increases, the output of CO₂ and CO also increases, and the output of H₂ decreases at a reaction temperature of 850°C with an increase in Fe loading. With a Fe/CaO oxygen carrier exhibiting 40% Fe loading, the experiment obtained a maximum syngas production of 453.4 mL, and the H₂ and CO gas yields were 146.6 and 306.8 mL, respectively.

Key words: biomass, chemical looping gasification;oxygen carrier, syngas

CLC Number:

LI Min, SUN Lai-zhi, CHEN Lei, YANG Shuang-xia, FENG Hong-qing, ZHANG Xiao-don. Biomass chemical looping gasification based on Fe/CaO oxygen carriers[J].Shandong Science, 2019, 32(5): 94-103.

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Biomass chemical looping gasification based on Fe/CaO oxygen carriers

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