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Experimental, statistical and stochastic studies of pressure fluctuations in a three-phase fluidized bed with a moderately large diameter

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Abstract

Hydrodynamic properties of bubbling flow through a three-phase fluidized bed with a moderately large diameter have been characterized with statistical and stochastic analyses of a comprehensive set of experimentally measured pressure fluctuations in the bed. The analyses have yielded the fluctuations' histogram, mean, maximum, minimum, standard deviation, skewness, kurtosis, and power-spectral-density function. As the gas flow rate increased with other operating conditions fixed, the mean and standard deviation increased, the skewness decreased, the distribution of the power-spectral-density function broadened, and the major frequency increased. In contrast, as the liquid flow rate increased, the mean and standard deviation decreased, the skewness and kurtosis increased, the powerspectral-density function narrowed, and the major frequency decreased. The hydrodynamic properties of a three-phase fluidized bed with a moderately large column in terms of pressure fluctuations are strongly affected by the flow rates of both the fluidizing gas and liquid.

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Authors and Affiliations

  1. Department of Chemical Engineering, Woosuk University, 565-701, Chonbuk, Korea

    Soung Hee Park & Sang Done Kim

  2. Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 305-701, Daejeon, Korea

    Sang Done Kim

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  1. Soung Hee Park
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  2. Sang Done Kim
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Correspondence to Soung Hee Park.

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Park, S.H., Kim, S.D. Experimental, statistical and stochastic studies of pressure fluctuations in a three-phase fluidized bed with a moderately large diameter. Korean J. Chem. Eng. 20, 121–127 (2003). https://doi.org/10.1007/BF02697196

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  • DOI: https://doi.org/10.1007/BF02697196

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