IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v277y2023ics0360544223010769.html
   My bibliography  Save this article

Optimal design and thermodynamic evaluation of supercritical CO2 oxy-coal circulating fluidized bed power generation systems

Author

Listed:
  • Li, Zhaozhi
  • Shao, Yingjuan
  • Zhong, Wenqi
  • Liu, Hao

Abstract

Replacing the steam Rankine cycle with the supercritical CO2 Brayton cycle (sCO2 cycle) has been demonstrated to be an effective way to improve the efficiency of oxy-coal power plants. The present work focuses on the optimal design of the sCO2 oxy-coal circulating fluidized bed (CFB) power generation systems which so far has not received much attention in the research field. A novel triple recompression sCO2 cycle and a new sCO2 oxy-coal CFB boiler configuration with medium-temperature and high-temperature flue gas recirculation have been proposed and evaluated. With the novel boiler configuration and triple recompression cycle, the system efficiency can be increased by about 1.4% points in comparison to the basic system using the basic recompression cycle and the basic boiler configuration. The influences of the cycle minimum temperature, recuperator pinch temperature difference, furnace inlet oxygen concentration, flue gas recirculation flow distribution and coal itself on the sCO2 oxy-coal CFB power generation system performances were thoroughly investigated. The results show that increasing the minimum cycle temperature and the recuperator pinch temperature difference reduces the system efficiency while increasing the oxygen concentration at the furnace inlet and reducing the proportion of the recirculating flue gas as the primary oxidizing gas can boost the system efficiency. Coal itself also has an impact on the system efficiency due to its properties affecting the cycle efficiency, boiler efficiency and auxiliary equipment power consumptions.

Suggested Citation

  • Li, Zhaozhi & Shao, Yingjuan & Zhong, Wenqi & Liu, Hao, 2023. "Optimal design and thermodynamic evaluation of supercritical CO2 oxy-coal circulating fluidized bed power generation systems," Energy, Elsevier, vol. 277(C).
    • Handle: RePEc:eee:energy:v:277:y:2023:i:c:s0360544223010769
    DOI: 10.1016/j.energy.2023.127682
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223010769
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.127682?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Bai, Wengang & Li, Hongzhi & Zhang, Lei & Zhang, Yifan & Yang, Yu & Zhang, Chun & Yao, Mingyu, 2021. "Energy and exergy analyses of an improved recompression supercritical CO2 cycle for coal-fired power plant," Energy, Elsevier, vol. 222(C).
    2. Bai, Ziwei & Zhang, Guoqiang & Li, Yongyi & Xu, Gang & Yang, Yongping, 2018. "A supercritical CO2 Brayton cycle with a bleeding anabranch used in coal-fired power plants," Energy, Elsevier, vol. 142(C), pages 731-738.
    3. Olumayegun, Olumide & Wang, Meihong & Oko, Eni, 2019. "Thermodynamic performance evaluation of supercritical CO2 closed Brayton cycles for coal-fired power generation with solvent-based CO2 capture," Energy, Elsevier, vol. 166(C), pages 1074-1088.
    4. Crespi, Francesco & Gavagnin, Giacomo & Sánchez, David & Martínez, Gonzalo S., 2017. "Supercritical carbon dioxide cycles for power generation: A review," Applied Energy, Elsevier, vol. 195(C), pages 152-183.
    5. Liu, Hao & Shao, Yingjuan, 2010. "Predictions of the impurities in the CO2 stream of an oxy-coal combustion plant," Applied Energy, Elsevier, vol. 87(10), pages 3162-3170, October.
    6. Chen, Shiyi & Yu, Ran & Soomro, Ahsanullah & Xiang, Wenguo, 2019. "Thermodynamic assessment and optimization of a pressurized fluidized bed oxy-fuel combustion power plant with CO2 capture," Energy, Elsevier, vol. 175(C), pages 445-455.
    7. Xu, Jinliang & Sun, Enhui & Li, Mingjia & Liu, Huan & Zhu, Bingguo, 2018. "Key issues and solution strategies for supercritical carbon dioxide coal fired power plant," Energy, Elsevier, vol. 157(C), pages 227-246.
    8. Liu, Xuejiao & Zhong, Wenqi & Li, Pingjiao & Xiang, Jun & Liu, Guoyao, 2019. "Design and performance analysis of coal-fired fluidized bed for supercritical CO2 power cycle," Energy, Elsevier, vol. 176(C), pages 468-478.
    9. Walnum, Harald Taxt & Nekså, Petter & Nord, Lars O. & Andresen, Trond, 2013. "Modelling and simulation of CO2 (carbon dioxide) bottoming cycles for offshore oil and gas installations at design and off-design conditions," Energy, Elsevier, vol. 59(C), pages 513-520.
    10. Mecheri, Mounir & Le Moullec, Yann, 2016. "Supercritical CO2 Brayton cycles for coal-fired power plants," Energy, Elsevier, vol. 103(C), pages 758-771.
    11. Zhang, Yifan & Li, Hongzhi & Han, Wanlong & Bai, Wengang & Yang, Yu & Yao, Mingyu & Wang, Yueming, 2018. "Improved design of supercritical CO2 Brayton cycle for coal-fired power plant," Energy, Elsevier, vol. 155(C), pages 1-14.
    12. Kim, Hyung Woo & Seo, Su Been & Kang, Seo Yeong & Go, Eun Sol & Oh, Seung Seok & Lee, YongWoon & Yang, Won & Lee, See Hoon, 2021. "Effect of flue gas recirculation on efficiency of an indirect supercritical CO2 oxy-fuel circulating fluidized bed power plant," Energy, Elsevier, vol. 227(C).
    13. Le Moullec, Yann, 2013. "Conceptual study of a high efficiency coal-fired power plant with CO2 capture using a supercritical CO2 Brayton cycle," Energy, Elsevier, vol. 49(C), pages 32-46.
    14. Chen, Zhewen & Wang, Yanjuan & Zhang, Xiaosong, 2020. "Energy and exergy analyses of S–CO2 coal-fired power plant with reheating processes," Energy, Elsevier, vol. 211(C).
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Wang, Runchen & Du, Xiaonan & Shi, Yuetao & Deng, Weipeng & Wang, Yuhao & Sun, Fengzhong, 2024. "A novel system for reducing power plant electricity consumption and enhancing deep peak-load capability," Energy, Elsevier, vol. 295(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Wang, Shengpeng & Zhang, Yifan & Li, Hongzhi & Yao, Mingyu & Peng, Botao & Yan, Junjie, 2020. "Thermohydrodynamic analysis of the vertical gas wall and reheat gas wall in a 300 MW supercritical CO2 boiler," Energy, Elsevier, vol. 211(C).
    2. Bai, Wengang & Li, Hongzhi & Zhang, Lei & Zhang, Yifan & Yang, Yu & Zhang, Chun & Yao, Mingyu, 2021. "Energy and exergy analyses of an improved recompression supercritical CO2 cycle for coal-fired power plant," Energy, Elsevier, vol. 222(C).
    3. Gu, Mingyan & Wang, Mingming & Chen, Xue & Wang, Jimin & Lin, Yuyu & Chu, Huaqiang, 2019. "Numerical study on the effect of separated over-fire air ratio on combustion characteristics and NOx emission in a 1000 MW supercritical CO2 boiler," Energy, Elsevier, vol. 175(C), pages 593-603.
    4. Xu, Cheng & Zhang, Qiang & Yang, Zhiping & Li, Xiaosa & Xu, Gang & Yang, Yongping, 2018. "An improved supercritical coal-fired power generation system incorporating a supplementary supercritical CO2 cycle," Applied Energy, Elsevier, vol. 231(C), pages 1319-1329.
    5. Liu, Xuejiao & Zhong, Wenqi & Li, Pingjiao & Xiang, Jun & Liu, Guoyao, 2019. "Design and performance analysis of coal-fired fluidized bed for supercritical CO2 power cycle," Energy, Elsevier, vol. 176(C), pages 468-478.
    6. Li, Hongzhi & Zhang, Yifan & Yao, Mingyu & Yang, Yu & Han, Wanlong & Bai, Wengang, 2019. "Design assessment of a 5 MW fossil-fired supercritical CO2 power cycle pilot loop," Energy, Elsevier, vol. 174(C), pages 792-804.
    7. Tong, Yongjing & Duan, Liqiang & Yang, Ming & Pang, Liping, 2022. "Design optimization of a new supercritical CO2 single reheat coal-fired power generation system," Energy, Elsevier, vol. 239(PB).
    8. Zhang, Xuelei & Zhang, Zhuoyuan & Wang, Gaofeng, 2023. "Thermodynamic and economic investigation of a novel combined cycle in coal-fired power plant with CO2 capture via Ca-looping," Energy, Elsevier, vol. 263(PB).
    9. Zhu, Meng & Zhou, Jing & Chen, Lei & Su, Sheng & Hu, Song & Qing, Haoran & Li, Aishu & Wang, Yi & Zhong, Wenqi & Xiang, Jun, 2022. "Economic analysis and cost modeling of supercritical CO2 coal-fired boiler based on global optimization," Energy, Elsevier, vol. 239(PD).
    10. Liu, Zecheng & Zhong, Wenqi & Shao, Yingjuan & Liu, Xuejiao, 2020. "Exergy analysis of supercritical CO2 coal-fired circulating fluidized bed boiler system based on the combustion process," Energy, Elsevier, vol. 208(C).
    11. Liu, Zecheng & Zhong, Wenqi & Shao, Yingjuan & Liu, Xuejiao, 2022. "Conceptual design of a small-capacity supercritical CO2 coal-fired circulating fluidized bed boiler by an improved design calculation method," Energy, Elsevier, vol. 255(C).
    12. Zhou, Jing & Zhu, Meng & Su, Sheng & Chen, Lei & Xu, Jun & Hu, Song & Wang, Yi & Jiang, Long & Zhong, Wenqi & Xiang, Jun, 2020. "Numerical analysis and modified thermodynamic calculation methods for the furnace in the 1000 MW supercritical CO2 coal-fired boiler," Energy, Elsevier, vol. 212(C).
    13. Yang, D.L. & Tang, G.H. & Fan, Y.H. & Li, X.L. & Wang, S.Q., 2020. "Arrangement and three-dimensional analysis of cooling wall in 1000 MW S–CO2 coal-fired boiler," Energy, Elsevier, vol. 197(C).
    14. Kunniyoor, Vijayaraj & Singh, Punit & Nadella, Karthik, 2020. "Value of closed-cycle gas turbines with design assessment," Applied Energy, Elsevier, vol. 269(C).
    15. Zhou, Jing & Zhu, Meng & Xu, Kai & Su, Sheng & Tang, Yifang & Hu, Song & Wang, Yi & Xu, Jun & He, Limo & Xiang, Jun, 2020. "Key issues and innovative double-tangential circular boiler configurations for the 1000 MW coal-fired supercritical carbon dioxide power plant," Energy, Elsevier, vol. 199(C).
    16. Luo, Kun & Zhao, Chunguang & Wen, Xu & Gao, Zhengwei & Bai, Yun & Xing, Jiangkuan & Fan, Jianren, 2019. "A priori study of an extended flamelet/progress variable model for NO prediction in pulverized coal flames," Energy, Elsevier, vol. 175(C), pages 768-780.
    17. Xu, Jinliang & Sun, Enhui & Li, Mingjia & Liu, Huan & Zhu, Bingguo, 2018. "Key issues and solution strategies for supercritical carbon dioxide coal fired power plant," Energy, Elsevier, vol. 157(C), pages 227-246.
    18. Fan, Y.H. & Yang, D.L. & Tang, G.H. & Sheng, Q. & Li, X.L., 2022. "Design of S–CO2 coal-fired power system based on the multiscale analysis platform," Energy, Elsevier, vol. 240(C).
    19. Bai, Wengang & Li, Hongzhi & Zhang, Xuwei & Qiao, Yongqiang & Zhang, Chun & Gao, Wei & Yao, Mingyu, 2022. "Thermodynamic analysis of CO2–SF6 mixture working fluid supercritical Brayton cycle used for solar power plants," Energy, Elsevier, vol. 261(PB).
    20. Olumayegun, Olumide & Wang, Meihong & Oko, Eni, 2019. "Thermodynamic performance evaluation of supercritical CO2 closed Brayton cycles for coal-fired power generation with solvent-based CO2 capture," Energy, Elsevier, vol. 166(C), pages 1074-1088.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:277:y:2023:i:c:s0360544223010769. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.