Shandong Science ›› 2019, Vol. 32 ›› Issue (5): 88-93.doi: 10.3976/j.issn.1002-4026.2019.05.011

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In-situ CO2 removal properties of CaO-based catalysts for biomass pyrolysis

XIE Xin-ping, CHEN Lei, SUN Lai-zhi, YANG Shuang-xia, YI Xiao-lu, HUA Dong-liang*   

  1. Shandong Provincial Key Laboratory of Biomass Gasification Technology,Energy Research Institute, Qilu University of Technology(Shandong Academy of Sciences), Jinan 250014,China
  • Received:2019-06-11 Online:2019-10-20 Published:2019-10-09

Abstract: An in-situ decarbonization process using CaO-based composite catalysts in biomass pyrolysis was investigated. The composition and content of the product gas were analyzed via gas chromatography. Results showed that the CaO-based composite catalysts could perform in-situ adsorption of CO2 generated in biomass pyrolysis and thus achieve the targeted catalytic conversion of biomass. Using Fe-CaO and Ni-CaO composite catalysts in biomass pyrolysis, the liquid product yield could be reduced to less than 20%, whereas the gas product yield could be increased to as high as 67.1%. Under the catalytic pyrolysis condition of Ni-CaO, the H2 content could reach 52.9%, whereas the φ(H2)/φ(CO) reached 2.6. Consequently, the quality of the pyrolysis gas improved.

Key words: CaO, composite catalysts, in-situ decarbonization, pyrolysis, biomass

CLC Number: 

  • TQ426.8