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Elutriation of solid particles from a dense‐phase fluidized bed
Author(s) -
Wen Chin Yung,
Hashinger Richard F.
Publication year - 1960
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.690060212
Subject(s) - elutriation , dimensionless quantity , fluidized bed , mechanics , thermodynamics , materials science , physics
The elutriation of fines from fluidized beds of two‐ and multiparticle systems is investigated. Materials used are glass beads and coal powder with air and helium as the elutriating gases. A specific elutriation rate constant which takes into consideration the particle stratification and thus is nearly independent of the bed dimensions is employed in the correlation of the elutriation of fines. The proposed generalized correlation applicable to a system of two particle sizes and to more complex ones is presented. Recorrelation of pertinent literature data by the dimensionless equation indicates good agreement in spite of a diversity of bed geometries. The effect of fluidized‐bed parameters on the rate of elutriation is examined, and applications and limitations of the correlation are shown.