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Some segregation effects in packed‐fluidized beds
Author(s) -
Sutherland J. P.,
Wong K. Y.
Publication year - 1964
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450420407
Subject(s) - baffle , fluidized bed , mixing (physics) , materials science , mechanics , flow (mathematics) , fluidization , volumetric flow rate , chemical engineering , thermodynamics , physics , engineering , quantum mechanics
In a fluidized bed, particles of different size are subject to a force imbalance that promotes segregation. However, in conventional gas‐fluidized systems this tendency is masked by the high solids mixing rates that exist. The addition of packing or baffles permits the use of high aspect ratios and also restricts large‐scale solids movement. As a result, segregation is more pronounced. Experiments have been carried out to assess the extent of segregation occurring in gas‐fluidized systems containing an open‐ended cylindrical screen packing. The degree of segregation has been found to depend on gas flow rate and bed height. Some rate studies have also been made.