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

作     者：Peng Jiang Hao Zhang Guanhan Zhao Lin Li Tuo Ji Liwen Mu Xiaohua Lu Jiahua Zhu Peng Jiang;Hao Zhang;Guanhan Zhao;Lin Li;Tuo Ji;Liwen Mu;Xiaohua Lu;Jiahua Zhu

作者机构：State Key Laboratory of Materials-oriented Chemical EngineeringCollege of Chemical EngineeringNanjing Tech UniversityNanjing 211816China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2024年第68卷第4期

页      面：231-240页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：support from the National Natural Science Foundation of China(21978128,91934302) partial support from the State Key Laboratory of Materials-oriented Chemical Engineering(ZK202006)also acknowledged.Additionally supported by the“Cultivation Program for The Excellent Doctoral Dissertation of Nanjing Tech University(3800124701)” 

主　　题：Biomass CaCO_(3)reductive calcination Chemical looping Hydrogen production Carbon footprint Thermodynamics process 

摘      要：In the carbonate industry,deep decarbonization strategies are necessary to effectively remediate CO_(2).These strategies mainly include both sustainable energy supplies and the conversion of CO_(2)in downstream *** study developed a coupled process of biomass chemical looping H2 production and reductive calcination of CaCO_(3).Firstly,a mass and energy balance of the coupled process was established in Aspen *** this,process optimization and energy integration were implemented to provide optimized operation ***,a life cycle assessment was carried out to assess the carbon footprint of the coupled *** reveal that the decomposition temperature of CaCO_(3)in an H_(2)atmosphere can be reduced to 780℃(generally around 900℃),and the conversion of CO_(2)from CaCO_(3)decomposition reached 81.33%with an H2:CO ratio of 2.49 in gaseous *** optimizing systemic energy through heat integration,an energy efficiency of 86.30%was ***,the carbon footprint analysis revealed that the process with energy integration had a low global warming potential(GWP)of-2.624 kg·kg^(-1)(CO_(2)/CaO).Conclusively,this work performed a systematic analysis of introducing biomass-derived H_(2)into CaCO_(3)calcination and demonstrated the positive role of reductive calcination using green H_(2)in mitigating CO_(2)emissions within the carbonate industry.