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Measuring Technologies for CFB Solid Circulation Rate: A Review and Future Perspectives

Author

Listed:
  • Xiandong Liu

    (State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Man Zhang

    (State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Shuangming Zhang

    (State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Yi Ding

    (SDIC Power Holding Co., Ltd., Beijing 100034, China)

  • Zhong Huang

    (State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Tuo Zhou

    (State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Hairui Yang

    (State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Guangxi Yue

    (State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

Abstract

Solid circulation rate ( G s ) represents the mass flux of circulating particles in circulating fluidized bed (CFB) systems and is a significant parameter for the design and operation of CFB reactors. Many measuring technologies for G s have been proposed, though few of them can be applied in industrial units. This paper presents a comprehensive study on measuring technologies, and the results indicate that though the accumulation method is most widely applied, it is constrained by the disturbance of normal particle circulation. Some publications have proposed mathematic models based on pressure drop or other parameters to establish G s measurement models; these necessitate the accurate modeling of complicated gas-solid flows in industrial devices. Methods based on certain measurement devices to specify parameters like velocity require device endurance in the industrial operation environment and stable local gas-solid flow. The G s measuring technologies are strongly influenced by local gas-solid flow states, and the packed bed flow in standpipes make the bottom of standpipes an ideal place to realize G s measurement.

Suggested Citation

  • Xiandong Liu & Man Zhang & Shuangming Zhang & Yi Ding & Zhong Huang & Tuo Zhou & Hairui Yang & Guangxi Yue, 2022. "Measuring Technologies for CFB Solid Circulation Rate: A Review and Future Perspectives," Energies, MDPI, vol. 15(2), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:2:p:417-:d:719342
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    References listed on IDEAS

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    1. Li, Dongfang & Cai, Runxia & Zhang, Man & Yang, Hairui & Choi, Kyeong & Ahn, Seokgi & Jeon, Chung-Hwan, 2020. "Operation characteristics of a bubbling fluidized bed heat exchanger with internal solid circulation for a 550-MWe ultra-supercritical CFB boiler," Energy, Elsevier, vol. 192(C).
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