Detachment Mechanisms in a Liquid Fluidised Bed

This paper provides a cross discipline critical review of the various efforts undertaken to assess the detachment mechanisms in a liquid fluidised bed. Points of agreement as well as those of divergence are stressed out, and attempts are made to clarify the discrepancies frequently observed. An expe...

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Bibliographic Details
Published inEnvironmental technology Vol. 17; no. 5; pp. 517 - 524
Main Authors Sakkas, N. D., Lekkas, T. D.
Format Journal Article
LanguageEnglish
Published London Taylor & Francis Group 01.05.1996
Selper
Subjects
Applied sciences
bed turbulence
Chemical engineering
detachment
Exact sciences and technology
Fluidisation
Fluidization
form drag
particle attrition
skin drag
velocity gradient
Turbulence
Liquid fluidization
Shear stress
Theoretical study
Experimental study
Mechanism of action
Attrition
Unsticking
Liquid solid
Modeling
Mass transfer
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Summary:This paper provides a cross discipline critical review of the various efforts undertaken to assess the detachment mechanisms in a liquid fluidised bed. Points of agreement as well as those of divergence are stressed out, and attempts are made to clarify the discrepancies frequently observed. An experimental work aiming at the removal of clay particles from the surface of fine salt grains is presented, and its results are treated in the light of the preceded discussion. The influence of velocity gradients, shear stress and particle attrition on detachment are discussed. A realistic model is provided for the prediction of attrition in particle beds during fluidisation.
ISSN:0959-3330
1479-487X
DOI:10.1080/09593331708616413