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Study of chemical looping co-gasification of lignite and rice husk with Cu-Ni oxygen carrier
[CO2 and SO2 sorption on the alkali metals doped CaO(100)surface: a DFT-D study]

Author

Listed:
  • Mengxin Wang
  • Tianle Li
  • Yupeng Xiao
  • Wenju Wang

Abstract

Coal is the dominant composition of fossil fuel but, with the accompanying gaseous products, causes environmental pollution. Here, we report a methodology to improve C conversion in co-gasification. The steam gasification and chemical looping gasification (CLG) of lignite and rice husk with oxygen uncoupling over 5% NiO/CuO oxygen carrier were conducted by non-isothermal kinetics method in a fixed-bed reactor. The gasification results showed that the yields of gas products in CLG of lignite or rice husk are higher than that in steam gasification. The yields of gases in chemical looping co-gasification (CLCG) are higher than that in steam co-gasification. In the co-gasification, the complementation of reactivity between fuels facilitated the C conversion rate, so the yields in co-gasification were higher than in individual gasification. The C conversion in CLCG of lignite and rice husk is 14.51% higher than that in steam co-gasification.

Suggested Citation

  • Mengxin Wang & Tianle Li & Yupeng Xiao & Wenju Wang, 2021. "Study of chemical looping co-gasification of lignite and rice husk with Cu-Ni oxygen carrier [CO2 and SO2 sorption on the alkali metals doped CaO(100)surface: a DFT-D study]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 16(4), pages 1127-1134.
    • Handle: RePEc:oup:ijlctc:v:16:y:2021:i:4:p:1127-1134.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctab037
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