Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reforming
The calcium looping integrated with the chemical looping combustion (CaL-CLC) process is an efficient and cost-effective CO2 capture technology that avoids the energy-intensive air separation unit in the calcium looping (CaL) process. However, in these CaL-CLC and CaL system integration schemes, the...
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Elsevier
2024-11-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24013583 |
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| author | Song He Yawen Zheng Xuelan Zeng Junyao Wang Lifan Gao Dongtai Yang |
| author_facet | Song He Yawen Zheng Xuelan Zeng Junyao Wang Lifan Gao Dongtai Yang |
| author_sort | Song He |
| collection | DOAJ |
| description | The calcium looping integrated with the chemical looping combustion (CaL-CLC) process is an efficient and cost-effective CO2 capture technology that avoids the energy-intensive air separation unit in the calcium looping (CaL) process. However, in these CaL-CLC and CaL system integration schemes, the carbonation heat is utilized for steam generation, resulting a significant temperature difference and considerable irreversible loss. To prevent temperature mismatch, this paper proposes a novel Ca-Cu looping post-combustion CO2 capture method with thermochemical recuperation based on steam methane reforming. Additionally, a novel system integrated with turbine exhaust heat recovery is introduced to effectively reduce carbon emissions from flue gas. Results show that the proposed system has superior performance compared to the reference system based on the Ca-Cu looping method. The specific primary energy consumption for CO2 avoidance decreased from 2.40 MJLHV/kg CO2 in the reference system to 2.02 MJLHV/kg CO2. Exergy analysis indicates that a total of 3.0 % reduction in exergy destruction can be achieved in chemical reaction processes and heat recovery processes, contributing to the superior performance of the proposed system. Furthermore, the effects of key operating parameters indicate that cascaded turbine exhaust recovery is essential for improving the thermodynamic efficiency of the proposed system. Overall, recovering the mid-temperature carbonation heat via thermochemical regeneration and integrating with exhaust heat recovery contribute to reducing SPECCA, thus providing a promising low-energy-consumption alternative for CO2 capture. |
| format | Article |
| id | doaj-art-7f43d4c0c93d44a89708a36af452f024 |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-7f43d4c0c93d44a89708a36af452f0242024-11-14T04:32:00ZengElsevierCase Studies in Thermal Engineering2214-157X2024-11-0163105327Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reformingSong He0Yawen Zheng1Xuelan Zeng2Junyao Wang3Lifan Gao4Dongtai Yang5Guangdong Basic Research Center of Excellence for Ecological Security and Green Development, Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou, 510006, China; Collaborative Innovation Institute of Carbon Neutrality and Green Development, Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou, 510006, China; School of Water, Energy and Environment, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, UK; Corresponding author.Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou 510006, China.Collaborative Innovation Institute of Carbon Neutrality and Green Development, Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou, 510006, China; China Shenzhen Gas Corporation Ltd., Shenzhen, 518040, ChinaGuangdong Basic Research Center of Excellence for Ecological Security and Green Development, Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou, 510006, China; Collaborative Innovation Institute of Carbon Neutrality and Green Development, Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou, 510006, ChinaSchool of Material and Energy, Guangdong University of Technology, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Functional Soft Matter, Guangzhou, 510006, ChinaGuangdong Basic Research Center of Excellence for Ecological Security and Green Development, Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou, 510006, China; Collaborative Innovation Institute of Carbon Neutrality and Green Development, Guangdong University of Technology, No.100 Waihuan Xi Road, Guangzhou, 510006, ChinaLaboratory of Integrated Energy System and Renewable Energy, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, ChinaThe calcium looping integrated with the chemical looping combustion (CaL-CLC) process is an efficient and cost-effective CO2 capture technology that avoids the energy-intensive air separation unit in the calcium looping (CaL) process. However, in these CaL-CLC and CaL system integration schemes, the carbonation heat is utilized for steam generation, resulting a significant temperature difference and considerable irreversible loss. To prevent temperature mismatch, this paper proposes a novel Ca-Cu looping post-combustion CO2 capture method with thermochemical recuperation based on steam methane reforming. Additionally, a novel system integrated with turbine exhaust heat recovery is introduced to effectively reduce carbon emissions from flue gas. Results show that the proposed system has superior performance compared to the reference system based on the Ca-Cu looping method. The specific primary energy consumption for CO2 avoidance decreased from 2.40 MJLHV/kg CO2 in the reference system to 2.02 MJLHV/kg CO2. Exergy analysis indicates that a total of 3.0 % reduction in exergy destruction can be achieved in chemical reaction processes and heat recovery processes, contributing to the superior performance of the proposed system. Furthermore, the effects of key operating parameters indicate that cascaded turbine exhaust recovery is essential for improving the thermodynamic efficiency of the proposed system. Overall, recovering the mid-temperature carbonation heat via thermochemical regeneration and integrating with exhaust heat recovery contribute to reducing SPECCA, thus providing a promising low-energy-consumption alternative for CO2 capture.http://www.sciencedirect.com/science/article/pii/S2214157X24013583Calcium loopingChemical looping combustionThermochemical recuperationPost-combustion CO2 capture |
| spellingShingle | Song He Yawen Zheng Xuelan Zeng Junyao Wang Lifan Gao Dongtai Yang Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reforming Case Studies in Thermal Engineering Calcium looping Chemical looping combustion Thermochemical recuperation Post-combustion CO2 capture |
| title | Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reforming |
| title_full | Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reforming |
| title_fullStr | Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reforming |
| title_full_unstemmed | Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reforming |
| title_short | Thermodynamic evaluation of a Ca-Cu looping post-combustion CO2 capture system integrated with thermochemical recuperation based on steam methane reforming |
| title_sort | thermodynamic evaluation of a ca cu looping post combustion co2 capture system integrated with thermochemical recuperation based on steam methane reforming |
| topic | Calcium looping Chemical looping combustion Thermochemical recuperation Post-combustion CO2 capture |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24013583 |
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