Axial dispersion of gas in a circulating fluidized bed |
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Authors: | Jimin Kim Guiyoung Han Changkeun Yi |
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Affiliation: | (1) Department of Chemical Engineering, Sungkyunkwan University, 440-746 Suwon, Korea;(2) Korea Institute of Energy Research, 305-343 Daejeon, Korea |
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Abstract: | An axial dispersion of gas in a circulating fluidized bed was investigated in a fluidized bed of 4.0 cm I.D. and 279 cm in
height. The axial dispersion coefficient of gas was determined by the stimulus-response method of trace gas of CO2. The employed particles were 0.069 mm and 0.147 mm silica-sand. The results showed that axial dispersion coefficients were
increased with gas velocity and solid circulation rates as well as suspension density. The experimentally determined axial
dispersion coefficients in this study were in the range of 1.0-3.5 m2/s. |
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Keywords: | Circulating Fluidized Bed RTD Peclet Number Axial Dispersion Coefficient |
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