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Experimental and Model Study on Raw Biomass Gasification Syngas Conditioning in a Molten NaOH-Na 2 CO 3 Mixture

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  • Xiaobo Wang

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China)

  • Anqi Liu

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China)

  • Zengli Zhao

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China)

  • Haibin Li

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China)

Abstract

Raw syngas conditioning using molten salts was carried out in a fixed-bed reactor. The effects of the reaction conditions, including temperature, gas velocity, bubble diameter, molten salt static liquid heights, and inlet gas composition, on the composition of the syngas product and the properties of the spent molten salts were investigated. The molten salt absorbed CO 2 in all of the experiments (at temperatures from 350 °C to 500 °C) and decreased its concentration down to 1%. The H 2 /CO increased from 0.94 to a maximum of 11.0, which may meet most of the synthetic process’ requirements. The temperature, gas velocity, and molten salt static liquid heights had significant effects on the H 2 and CO concentrations in the gas product. Molten salt raw syngas conditioning can be a suitable follow-up procedure for gasification and pyrolysis.

Suggested Citation

  • Xiaobo Wang & Anqi Liu & Zengli Zhao & Haibin Li, 2020. "Experimental and Model Study on Raw Biomass Gasification Syngas Conditioning in a Molten NaOH-Na 2 CO 3 Mixture," Energies, MDPI, vol. 13(14), pages 1-16, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3668-:d:385392
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    References listed on IDEAS

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    1. Guo, Da-liang & Wu, Shu-bin & Liu, Bei & Yin, Xiu-li & Yang, Qing, 2012. "Catalytic effects of NaOH and Na2CO3 additives on alkali lignin pyrolysis and gasification," Applied Energy, Elsevier, vol. 95(C), pages 22-30.
    2. Niu, Miaomiao & Huang, Yaji & Jin, Baosheng & Liang, Shaohua & Dong, Qing & Gu, Haiming & Sun, Rongyue, 2019. "A novel two-stage enriched air biomass gasification for producing low-tar high heating value fuel gas: Pilot verification and performance analysis," Energy, Elsevier, vol. 173(C), pages 511-522.
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