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Gas‐liquid mass transfer in three‐phase fluidized beds with viscous pseudoplastic liquids
Author(s) -
Schumpe Adrian,
Deckwer WolfDieter,
Nigam Krishna D. P.
Publication year - 1989
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.5450670523
Subject(s) - shear thinning , carboxymethyl cellulose , mass transfer , materials science , phase (matter) , chromatography , particle (ecology) , thermodynamics , composite material , chemistry , rheology , organic chemistry , metallurgy , physics , geology , oceanography , sodium
Liquid phase volumetric mass transfer coefficients for oxygen were determined in three‐phase fluidized beds of 8 mm glass spheres fluidized by a cocurrent flow of air and pseudoplastic polysaccharide solutions (carboxymethyl cellulose, xanthan). A semi‐theoretical relation for the effective shear rate was suggested. The mass transfer coefficients could be correlated, together with literature data for particle diameters of 3 mm and 5 mm in other liquids, using the terminal velocity as the particle‐specific property.