SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2025, Vol. 80 ›› Issue (4): 303-314.DOI: 10.1016/j.cjche.2024.10.037

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Investigation on the pyrolysis behaviors and kinetics of walnut shell lignocellulosic biomass with additives

Wei Zhang1,2, Yuming Zhang1,2, Haixin Wu2, Xinyu Yang2, Pei Qiao2, Jiazhou Li1,2, Zhewen Chen1,2, Yan Wang3,4   

  1. 1 State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China;
    2 College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China;
    3 China Coal Research Institute Corporation Ltd., Beijing 100013, China;
    4 National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China
  • Received:2024-08-16 Revised:2024-10-20 Accepted:2024-10-21 Online:2025-01-21 Published:2025-04-28
  • Contact: Yuming Zhang,E-mail:ymzhang@cup.edu.cn
  • Supported by:
    The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (22278432), National Key Research & Development Program of China (2022YFB3805602), Science Foundation of China University of Petroleum-Beijing (2462021BJRC001, 2462021QNXZ007).

Investigation on the pyrolysis behaviors and kinetics of walnut shell lignocellulosic biomass with additives

Wei Zhang1,2, Yuming Zhang1,2, Haixin Wu2, Xinyu Yang2, Pei Qiao2, Jiazhou Li1,2, Zhewen Chen1,2, Yan Wang3,4   

  1. 1 State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China;
    2 College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China;
    3 China Coal Research Institute Corporation Ltd., Beijing 100013, China;
    4 National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China
  • 通讯作者: Yuming Zhang,E-mail:ymzhang@cup.edu.cn
  • 基金资助:
    The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (22278432), National Key Research & Development Program of China (2022YFB3805602), Science Foundation of China University of Petroleum-Beijing (2462021BJRC001, 2462021QNXZ007).

Abstract: Utilizing calcium aluminate (CaAlO) as a catalyst in lignocellulosic biomass pyrolysis offers dual advantages of cost saving and mitigating environmental pollution from industrial waste. This study employs kinetic analysis to validate the catalytic effect of CaAlO on biomass pyrolysis. Thermalgravimetric analysis of walnut shell pyrolysis was conducted, incorporating CaAlO, CaO, and Al2O3 additives to examine catalytic pyrolysis and gas release characteristics. The results reveal that CaAlO exhibits a catalytic effect similar to that of CaO and Al2O3, suggesting its potential as an effective catalyst. Activation energies obtained without additive and with CaAlO, CaO, and Al2O3 by Friedman method are 184, 178, 158, and 176 kJ·mol-1, while by Flynn-Wall-Ozawa (FWO) method are 186, 179, 160, 177 kJ·mol-1. Finally, distributed activation energy model (DAEM) analysis was performed, and the obtained parameters were successfully coupled into three-dimensional numerical simulation with some simplifications in the DAEM integration to reduce calculation cost, showing its potential applicability in biomass pyrolysis investigation.

Key words: Lignocellulosic biomass, Pyrolysis kinetics, Friedman method, FWO method, DAEM method

摘要: Utilizing calcium aluminate (CaAlO) as a catalyst in lignocellulosic biomass pyrolysis offers dual advantages of cost saving and mitigating environmental pollution from industrial waste. This study employs kinetic analysis to validate the catalytic effect of CaAlO on biomass pyrolysis. Thermalgravimetric analysis of walnut shell pyrolysis was conducted, incorporating CaAlO, CaO, and Al2O3 additives to examine catalytic pyrolysis and gas release characteristics. The results reveal that CaAlO exhibits a catalytic effect similar to that of CaO and Al2O3, suggesting its potential as an effective catalyst. Activation energies obtained without additive and with CaAlO, CaO, and Al2O3 by Friedman method are 184, 178, 158, and 176 kJ·mol-1, while by Flynn-Wall-Ozawa (FWO) method are 186, 179, 160, 177 kJ·mol-1. Finally, distributed activation energy model (DAEM) analysis was performed, and the obtained parameters were successfully coupled into three-dimensional numerical simulation with some simplifications in the DAEM integration to reduce calculation cost, showing its potential applicability in biomass pyrolysis investigation.

关键词: Lignocellulosic biomass, Pyrolysis kinetics, Friedman method, FWO method, DAEM method