A new image reconstruction method for tomographic investigation of fluidized beds

Authors

  • Shi Liu,

    1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China
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  • Haigang Wang,

    1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China
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  • Fan Jiang,

    1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China
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  • W. Q. Yang

    Corresponding author
    1. Dept. of Electrical Engineering and Electronics, University of Manchester Institute of Science and Technology (UMIST), Manchester M60 1QD, UK
    • Dept. of Electrical Engineering and Electronics, University of Manchester Institute of Science and Technology (UMIST), Manchester M60 1QD, UK
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Abstract

It is important to investigate the behavior of circulating fluidized beds (CFB) for efficient coal combustion. Electrical capacitance tomography (ECT) was applied to the measurement of gas/solids distribution in square CFBs. An iterative method was used to achieve improved image reconstruction over the commonly used linear back-projection algorithm. The solids concentration profile, temporal variation of average solids concentration, and frequency spectra, which were obtained from the ECT data, are presented.

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