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Title: Minimum fluidization velocities and maximum bed pressure drops for gas–solid tapered fluidized beds
Authors: Sau, D C
Mohanty, S
Biswal, K C
Keywords: Gas–solid fluidization
Minimum fluidization velocity
Maximum pressure drop
Tapered fluidized bed
Issue Date: 2007
Publisher: Elsevier
Citation: Chemical Engineering Journal, Vol 132, Iss 1-3, P 151-157
Abstract: Hydrodynamic characteristics of tapered fluidized beds differ from that of conventional columnar beds by the fact that a velocity gradient exists along the axial direction of the bed. To study the characteristics of tapered beds, several experiments have been carried out with different tapered angles of the bed, with regular as well as irregular particles of different sizes and densities. The tapered angles of the beds have been found to affect the characteristics of the bed. Models based on dimensionless analysis have been proposed to predict the minimum fluidization velocity and maximum pressure drop for gas–solid tapered fluidized beds. Experimental values of minimum fluidization velocity and maximum bed pressure drop with air as the fluidizing medium compare well with that predicted by the proposed models. The results have also been compared with other models available in the literature.
Description: Copyright for the article belongs to Elsevier
Appears in Collections:Journal Articles

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