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Prediction of cluster diameter for a wide range of particles for gas–solid dispersed phase in a fast fluidized‐bed reactor
Author(s) -
Das Mitali,
Meikap B. C.,
Saha R. K.
Publication year - 2008
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.131
Subject(s) - suspension (topology) , fluidized bed , cluster (spacecraft) , homogeneous , fluidized bed combustion , materials science , particle (ecology) , cluster analysis , phase (matter) , range (aeronautics) , acceleration , mechanics , chemical engineering , composite material , thermodynamics , chemistry , physics , engineering , classical mechanics , computer science , mathematics , organic chemistry , geology , programming language , oceanography , machine learning , homotopy , pure mathematics
Fast fluidized‐bed (FFB) reactors have been used in chemical process industries. Clustering behavior of the FFB has been studied with Geldart group B particles like coal and iron ore in a circulating fluidized bed (CFB) of inner diameter 0.1016 m and height 5.62 m. Clustering phenomena has been investigated by incorporating the effects of acceleration and friction into the homogeneous gas–solid cluster suspension model. The cluster diameter calculated from homogeneous cluster suspension model appears to tally with the measured data when the particle concentration in the suspension lies in the dilute phase. It has been found that the acceleration has some effect on the cluster diameter. However, the solid friction does not have any significant role. The result of the present study gives a clear understanding of clustering phenomena in FFB. Copyright © 2008 Curtin University of Technology and John Wiley & Sons, Ltd.