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Dynamic Characteristics Analysis of a 660 MW Ultra-Supercritical Circulating Fluidized Bed Boiler

Author

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  • Chen Yang

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400044, China
    School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China)

  • Zonglong Zhang

    (Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400044, China
    School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China)

  • Haochuang Wu

    (School of Primary Education, Chongqing Normal University, Chongqing 400070, China)

  • Kangjie Deng

    (CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610213, China)

Abstract

The 660 MW ultra-supercritical circulating fluidized bed (CFB) boiler, which is the maximum capacity and largest scale boiler in the world has entered construction stage in China. This study established a full-scale dynamic simulation model of the 660 MW ultra-supercritical at 100% boiler maximum continuous rating (BMCR) condition. The model consists of an air-flue gas system, a water-steam system, and an ash circulation system. The “core-annulus” of the gas-solid two-phase flow structure and “six-equation” model of water-steam two-phase flow were applied to simulate the behaviors of the gas-solid phase and water-steam system, respectively. The model was calibrated and verified at 100% BMCR condition, and the steady-state simulation results presented a high accuracy compared with the designed parameters. A dynamic simulation of three typical conditions were carried out as well, including a 5% feed water decrease, 5% air decrease, and 5% coal decrease, respectively. The results showed that the dynamic simulation model established in this study can simulate the dynamic behaviors of the 660 MW ultra-supercritical CFB boiler reasonably.

Suggested Citation

  • Chen Yang & Zonglong Zhang & Haochuang Wu & Kangjie Deng, 2022. "Dynamic Characteristics Analysis of a 660 MW Ultra-Supercritical Circulating Fluidized Bed Boiler," Energies, MDPI, vol. 15(11), pages 1-20, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:4049-:d:828973
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    References listed on IDEAS

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    1. Zhu, Shahong & Zhang, Man & Huang, Yiqun & Wu, Yuxin & Yang, Hairui & Lyu, Junfu & Gao, Xinyu & Wang, Fengjun & Yue, Guangxi, 2019. "Thermodynamic analysis of a 660 MW ultra-supercritical CFB boiler unit," Energy, Elsevier, vol. 173(C), pages 352-363.
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    Cited by:

    1. Chen Yang & Tao Zhang & Zonglong Zhang & Li Sun, 2022. "MLD–MPC for Ultra-Supercritical Circulating Fluidized Bed Boiler Unit Using Subspace Identification," Energies, MDPI, vol. 15(15), pages 1-26, July.
    2. Guo Li & Xiangyu Tao & Zonglong Zhang & Chen Yang & Qigang Deng & Li Nie & Wei He & Weicheng Li & Jiayi Lu & Liming Gong, 2023. "Dynamic Simulation of MFT and BT Processes on a 660 MW Ultra-Supercritical Circulating Fluidized Bed Boiler," Energies, MDPI, vol. 16(5), pages 1-13, February.
    3. Boyu Deng & Yi Zhang & Hairui Yang, 2022. "Operation Optimization of Circulating Fluidized Bed Boilers Integration of Variable Renewables," Energies, MDPI, vol. 15(16), pages 1-3, August.
    4. Andrés Meana-Fernández & Juan M. González-Caballín & Roberto Martínez-Pérez & Francisco J. Rubio-Serrano & Antonio J. Gutiérrez-Trashorras, 2022. "Power Plant Cycles: Evolution towards More Sustainable and Environmentally Friendly Technologies," Energies, MDPI, vol. 15(23), pages 1-27, November.

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