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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/888

Title: Mixing Characteristics of Irregular Binaries in a Promoted Gas-Solid Fluidized Bed: A Mathematical Model
Authors: Sahoo, A
Roy, G K
Keywords: Co-axial promoters
Mixing index
Jetsam concentration
Homogeneous and Heterogeneous binaries
, Gas-solid fluidization
dispersion coefficient
Issue Date: 2008
Publisher: Wiley
Citation: Canadian Journal of Chemical Engineering, vol. 86, No1, pp. 53-61 , 2008
Abstract: The vertical as well as horizontal dispersion for the gas-solid fluidization has been analyzed in the present work. The fluidization and solids mixing characteristics of large irregular particles (Geldart-BD type) for both homogeneous and heterogeneous materials (size-variant and density-variant respectively) have been investigated in a 15×100cm cylindrical column. A theoretical model for concentration of jetsam particles has been developed as a function of height of any layer of particles (measured from the grid) by considering the counter flow of solids and circulation model together with the dispersion model for the vertical and the horizontal displacement of the particles in the fluidized bed. The mixing index at any position in the bed has thereby been expressed as a function of the concentration of the jetsam. The values of mixing index calculated from the above model as well as the experimentally measured ones for both the homogeneous and the heterogeneous systems have been comp...
URI: http://doi:10.1016/j.powtec.2008.01.028
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