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Classifying the fluidization and segregation behavior of binary mixtures using particle size and density ratios
Author(s) -
Rao Akhil,
Curtis Jennifer S.,
Hancock Bruno C.,
Wassgren Carl
Publication year - 2011
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.12371
Subject(s) - fluidization , binary number , particle size , thermodynamics , pressure drop , materials science , density ratio , statistical physics , fluidized bed , mechanics , chemistry , mathematics , physics , arithmetic
Experimental investigations show that fluidized binary mixtures exhibit varied pressure drop profiles and segregation patterns, depending on the level of disparity due to size and/or density differences. In this study, different mixture types are mapped on a graph of density versus size ratios. It is found that the ratio of the minimum fluidization velocities of individual components can be used to categorize these mixtures. A simple correlation is developed to compute the ratio of the minimum fluidization velocities based on the density and size ratios. Categorizing the binary mixtures in this manner gives a qualitative understanding of how the different mixtures behave on fluidization. © 2010 American Institute of Chemical Engineers AIChE J, 2011