Performance Analysis of an Efficient Integration System of Coal-Fired Power Plant, Solar Thermal Energy and CO2 Capture

WANG Yuhao, WANG Ruilin, LIU Lanhua, XING Chenjian, GUO Yafei, YANG Qingshan, YING Jiaheng, SUN Jian, LI Wenjia, LIU Yuanyuan, ZHAO Chuanwen

Journal of Thermal Science ›› 2024, Vol. 33 ›› Issue (4) : 1509-1522.

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Journal of Thermal Science ›› 2024, Vol. 33 ›› Issue (4) : 1509-1522. DOI: 10.1007/s11630-024-1974-4  CSTR: 32141.14.sJTS-024-1974-4
Engineering thermodynamics

Performance Analysis of an Efficient Integration System of Coal-Fired Power Plant, Solar Thermal Energy and CO2 Capture

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Abstract

Coal-fired power plant is a major contributor to greenhouse gas emissions. The post-combustion capture is a promising method for CO2 emission reduction but the high thermal demand is unbearable. To address this issue, solar thermal energy and CO2 capture are jointly integrated into the coal-fired power plant in this study. The solar thermal energy is employed to meet the heat requirement of the CO2 capture process, thereby avoiding the electricity loss caused by self-driven CO2 capture. Furthermore, the heat released from the carbonation reaction of MgO adsorbent is integrated into the steam Rankine cycle. By partially substituting the extracted steam for feedwater heating, the electricity output of the power plant is further increased. According to the results from the developed model, the system could achieve a CO2 capture rate of 86.5% and an electricity output enhancement of 9.8% compared to the reference system, which consists of a self-driven CO2 capture coal-fired power plant and PV generation unit. The operational strategy is also optimized and the amount of CO2 emission reduction on a typical day is increased by 11.06%. This work shows a way to combine fossil fuels and renewable energy for low carbon emissions and efficient power generation.

Key words

CO2 capture / parabolic trough collector / solar aided coal-fired electricity generation

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WANG Yuhao , WANG Ruilin , LIU Lanhua , XING Chenjian , GUO Yafei , YANG Qingshan , YING Jiaheng , SUN Jian , LI Wenjia , LIU Yuanyuan , ZHAO Chuanwen. Performance Analysis of an Efficient Integration System of Coal-Fired Power Plant, Solar Thermal Energy and CO2 Capture[J]. Journal of Thermal Science, 2024, 33(4): 1509-1522 https://doi.org/10.1007/s11630-024-1974-4

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Funding

Financial supports from the National Natural Science Foundation of China (5210060338), National Natural Science Foundation of China (Grant No. 52293414), Jiangsu Natural Science Foundation (BK20200731) and Science and Technology Program of China Huadian Corporation (CHDKJ22-01-23) and Jiangsu graduate research and practice innovation project (18120000312321) are acknowledged.

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Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024
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