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Title: Residence Time Distribution in Semi-Fluidized Beds
Authors: Murthy, J S N
Roy, G K
Subramanyam, N
Zutshi, K
Naik, S C
Issue Date: Oct-1990
Citation: IE (I) Journal-CH, Vol 71, October 1990
Abstract: Residence time distribution (RTD) studies have been made in solid-liquid semi-fluidized beds with particle size, particle density, height of the static bed and position of restraint as variables. A comparison of experimental data with those obtained from various models, shows that the dispersed plug flow model represents the most Satisfactorily flow phenomenon in semi-fluidized beds. A number of correlations have been proposed for prediction of the mean residence time and the dispersion number based on dimensional analysis for the three stages—packed bed, fluidized bed and semi-fluidized bed of semi-fluidization. The correlations have been tested with independent runs and these are found to agree with the experimental data within 20% deviations.
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Journal Articles
Journal Articles

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