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): 231-240.DOI: 10.1016/j.cjche.2023.12.017

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A thermodynamic view on the in-situ carbon dioxide reduction by biomass-derived hydrogen during calcium carbonate decomposition

Peng Jiang, Hao Zhang, Guanhan Zhao, Lin Li, Tuo Ji, Liwen Mu, Xiaohua Lu, Jiahua Zhu   

  1. State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
  • 收稿日期:2023-12-05 修回日期:2023-12-25 出版日期:2024-04-28 发布日期:2024-06-28
  • 通讯作者: Tuo Ji,E-mail address:tuoji@njtech.edu.cn;Jiahua Zhu,E-mail address:jhzhu@njtech.edu.cn
  • 基金资助:
    The authors appreciate the financial support from the National Natural Science Foundation of China (21978128, 91934302), and partial support from the State Key Laboratory of Materials-oriented Chemical Engineering (ZK202006) also acknowledged. Additionally, authors are grateful to be supported by the “Cultivation Program for The Excellent Doctoral Dissertation of Nanjing Tech University (3800124701)”.

A thermodynamic view on the in-situ carbon dioxide reduction by biomass-derived hydrogen during calcium carbonate decomposition

Peng Jiang, Hao Zhang, Guanhan Zhao, Lin Li, Tuo Ji, Liwen Mu, Xiaohua Lu, Jiahua Zhu   

  1. State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
  • Received:2023-12-05 Revised:2023-12-25 Online:2024-04-28 Published:2024-06-28
  • Contact: Tuo Ji,E-mail address:tuoji@njtech.edu.cn;Jiahua Zhu,E-mail address:jhzhu@njtech.edu.cn
  • Supported by:
    The authors appreciate the financial support from the National Natural Science Foundation of China (21978128, 91934302), and partial support from the State Key Laboratory of Materials-oriented Chemical Engineering (ZK202006) also acknowledged. Additionally, authors are grateful to be supported by the “Cultivation Program for The Excellent Doctoral Dissertation of Nanjing Tech University (3800124701)”.

摘要: In the carbonate industry, deep decarbonization strategies are necessary to effectively remediate CO2. These strategies mainly include both sustainable energy supplies and the conversion of CO2 in downstream processes. This study developed a coupled process of biomass chemical looping H2 production and reductive calcination of CaCO3. Firstly, a mass and energy balance of the coupled process was established in Aspen Plus. Following this, process optimization and energy integration were implemented to provide optimized operation conditions. Lastly, a life cycle assessment was carried out to assess the carbon footprint of the coupled process. Results reveal that the decomposition temperature of CaCO3 in an H2 atmosphere can be reduced to 780 ℃ (generally around 900 ℃), and the conversion of CO2 from CaCO3 decomposition reached 81.33% with an H2:CO ratio of 2.49 in gaseous products. By optimizing systemic energy through heat integration, an energy efficiency of 86.30% was achieved. Additionally, the carbon footprint analysis revealed that the process with energy integration had a low global warming potential (GWP) of -2.624 kg·kg-1 (CO2/CaO). Conclusively, this work performed a systematic analysis of introducing biomass-derived H2 into CaCO3 calcination and demonstrated the positive role of reductive calcination using green H2 in mitigating CO2 emissions within the carbonate industry.

关键词: Biomass, CaCO3 reductive calcination, Chemical looping, Hydrogen production, Carbon footprint, Thermodynamics process

Abstract: In the carbonate industry, deep decarbonization strategies are necessary to effectively remediate CO2. These strategies mainly include both sustainable energy supplies and the conversion of CO2 in downstream processes. This study developed a coupled process of biomass chemical looping H2 production and reductive calcination of CaCO3. Firstly, a mass and energy balance of the coupled process was established in Aspen Plus. Following this, process optimization and energy integration were implemented to provide optimized operation conditions. Lastly, a life cycle assessment was carried out to assess the carbon footprint of the coupled process. Results reveal that the decomposition temperature of CaCO3 in an H2 atmosphere can be reduced to 780 ℃ (generally around 900 ℃), and the conversion of CO2 from CaCO3 decomposition reached 81.33% with an H2:CO ratio of 2.49 in gaseous products. By optimizing systemic energy through heat integration, an energy efficiency of 86.30% was achieved. Additionally, the carbon footprint analysis revealed that the process with energy integration had a low global warming potential (GWP) of -2.624 kg·kg-1 (CO2/CaO). Conclusively, this work performed a systematic analysis of introducing biomass-derived H2 into CaCO3 calcination and demonstrated the positive role of reductive calcination using green H2 in mitigating CO2 emissions within the carbonate industry.

Key words: Biomass, CaCO3 reductive calcination, Chemical looping, Hydrogen production, Carbon footprint, Thermodynamics process