Mixing/segregation potential in binary liquid fluidized beds

Rasul M.G. (2000) Mixing/segregation potential in binary liquid fluidized beds. Chemical Engineering Communications, 177 245-267.

Author Rasul M.G.
Title Mixing/segregation potential in binary liquid fluidized beds
Journal name Chemical Engineering Communications   Check publisher's open access policy
ISSN 0098-6445
Publication date 2000-01-01
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 177
Start page 245
End page 267
Total pages 23
Language eng
Subject 1500 Chemical Engineering
Abstract The mechanism underlying mixing/segregation of binary particles in liquid fluidized beds is reviewed and investigated in this paper. Binary mixtures of particles, when fluidized, sometimes segregate and display a behaviour called layer inversion. At low fluid velocities, one of the components is primarily found in a discrete layer at the bottom of the bed, while the other is predominantly at the top. At higher fluid velocities, the order of arrangement is reversed. The literature provides a variety of explanations for this phenomenon, derived from quite different theoretical bases. A comparative analysis of these different approaches is presented here together with the experimental results available in the literature. Based on the best model, further experimental investigation is carried out to provide; (i) comprehensive criteria to predict whether a given binary mixture of any type (both size and density variant, size variant only, density variant only) will mix/segregate or show layer inversion, and (ii) mixing/segregation regime map in terms of size ratio and density ratio of the particles for a given fluidizing medium. Therefore, knowing the properties of given particles, a second type of particles can be chosen in order to avoid or to promote segregation according to the particular process requirement.
Keyword Binary mixtures
Layer inversion
Liquid fluidized beds
Mixing/segregation potential
Mixing/segregation regime map
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
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Citation counts: Scopus Citation Count Cited 2 times in Scopus Article | Citations
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Created: Tue, 05 Jul 2016, 13:46:34 EST by System User