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Fluidization regimes in two‐ and three‐phase fluidized beds: Comparison between measurement techniques
Author(s) -
Barghi Shazad,
Briens Cedric L.
Publication year - 2001
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.5450790316
Subject(s) - fluidization , mixing (physics) , pressure drop , fluidized bed , mechanics , materials science , collision , liquid phase , phase (matter) , conductivity , thermodynamics , chemistry , physics , computer security , organic chemistry , quantum mechanics , computer science
Fluidization regimes were studied in liquid‐solid and gas‐Liquid‐solid fluidized beds. The liquid velocities at which regime transitions occur in liquid‐solid and gas‐liquid‐solid systems were obtained for monosize and multicomponent systems. Minimum fluidization, complete fluidization and complete mixing velocities of particles were obtained from pressure drop measurements, a collision technique or a conductivity method. The collision technique provided accurate complete fluidization and complete mixing velocities by measuring directly the particle motion. The conductivity technique, which is easier to implement, gave similar but less accurate results.