SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2024, Vol. 68 ›› Issue (4): 8-15.DOI: 10.1016/j.cjche.2023.12.013

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Thermogravimetric characteristics of corn straw and bituminous coal copyrolysis based the ilmenite oxygen carriers

Pengxing Yuan1,2, Xiude Hu2, Jingjing Ma2, Tuo Guo1,2, Qingjie Guo1,2   

  1. 1. College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China;
    2. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
  • 收稿日期:2023-08-29 修回日期:2023-12-15 出版日期:2024-04-28 发布日期:2024-06-28
  • 通讯作者: Tuo Guo,E-mail address:tuo.guo.20@alumni.ucl.ac.uk;Qingjie Guo,E-mail address:qingjie_guo@vip.sina.com
  • 基金资助:
    The authors wish to acknowledge financial support by the Key Research and Development Program of Ningxia Province of China (2018BCE01002). The work is also funded by the Joint Funds of the National Natural Science Foundation of China (U20A20124) and the Natural Science Foundation Project of Ningxia (2022AAC01001). We also thank Dr. Huifen Kang and Mr. Cong Shen from Ningxia University for their help with feedstock supply and theoretical concepts.

Thermogravimetric characteristics of corn straw and bituminous coal copyrolysis based the ilmenite oxygen carriers

Pengxing Yuan1,2, Xiude Hu2, Jingjing Ma2, Tuo Guo1,2, Qingjie Guo1,2   

  1. 1. College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China;
    2. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
  • Received:2023-08-29 Revised:2023-12-15 Online:2024-04-28 Published:2024-06-28
  • Contact: Tuo Guo,E-mail address:tuo.guo.20@alumni.ucl.ac.uk;Qingjie Guo,E-mail address:qingjie_guo@vip.sina.com
  • Supported by:
    The authors wish to acknowledge financial support by the Key Research and Development Program of Ningxia Province of China (2018BCE01002). The work is also funded by the Joint Funds of the National Natural Science Foundation of China (U20A20124) and the Natural Science Foundation Project of Ningxia (2022AAC01001). We also thank Dr. Huifen Kang and Mr. Cong Shen from Ningxia University for their help with feedstock supply and theoretical concepts.

摘要: Herein, the co-pyrolysis reaction characteristics of corn straw (CS) and bituminous coal in the presence of ilmenite oxygen carriers (OCs) are investigated via thermogravimetry coupled with mass spectrometry. The results reveal that the participation of OCs weakens the devolatilization intensity of co-pyrolysis. When the CS blending ratio is <50%, the mixed fuel exhibits positive synergistic effects. The fitting results according to the Coats-Redfern integral method show that the solid-solid interaction between OCs and coke changes the reaction kinetics, enhancing the co-pyrolysis reactivity at the high-temperature zone (750-950 ℃). The synergistic effect is most prominent at a 30% CS blending ratio, with copyrolysis activation energy in the range of 26.35-40.57 kJ·mol-1.

关键词: Oxygen carrier, Co-pyrolysis, Biomass, Coal

Abstract: Herein, the co-pyrolysis reaction characteristics of corn straw (CS) and bituminous coal in the presence of ilmenite oxygen carriers (OCs) are investigated via thermogravimetry coupled with mass spectrometry. The results reveal that the participation of OCs weakens the devolatilization intensity of co-pyrolysis. When the CS blending ratio is <50%, the mixed fuel exhibits positive synergistic effects. The fitting results according to the Coats-Redfern integral method show that the solid-solid interaction between OCs and coke changes the reaction kinetics, enhancing the co-pyrolysis reactivity at the high-temperature zone (750-950 ℃). The synergistic effect is most prominent at a 30% CS blending ratio, with copyrolysis activation energy in the range of 26.35-40.57 kJ·mol-1.

Key words: Oxygen carrier, Co-pyrolysis, Biomass, Coal