Abstract
The experiments of chemical looping gasification of biomass based on Fe2O3–CaO oxygen carrier were studied in a fixed bed reactor using sawdust as a biomass feedstock. It was found that compared to the parent Fe2O3 and CaO, the combined oxygen carriers of iron oxide and calcium oxide demonstrated the best activity for chemical looping gasification of biomass. When the mass ratio of sawdust:Fe2O3:CaO was 2:2:1, the maximum syngas yield could reach 531.3 mL g−1 sawdust at the reaction temperature of 850 °C. Furthermore, from the results of cycle experiments, SEM and XRD characterizations, it was found that Fe2O3 could provide oxygen for sawdust gasification, while CaO played a dual role of absorbing CO2 and catalysis at mild temperatures and reforming tars to syngas at high temperature. Fe2O3–CaO oxygen carriers exhibited good cycling characteristics during chemical looping biomass gasification.
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This work was supported by National Natural Science Foundation of China (51876108, 21908117), Natural Science Foundation of Shandong Province of China (ZR2019MB061, ZR2019MEE069), Qilu University of Technology and Shandong Academy of Sciences Foundation (2018BSHZ0025).
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Li, M., Sun, L., Chen, L. et al. Syngas production from biomass chemical looping gasification with Fe2O3–CaO oxygen carrier. J Therm Anal Calorim 147, 7811–7817 (2022). https://doi.org/10.1007/s10973-021-11114-5
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DOI: https://doi.org/10.1007/s10973-021-11114-5