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Wall mass transfer in liquid‐fluidized beds
Author(s) -
King D. H.,
Smith J. W.
Publication year - 1967
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.5450450601
Subject(s) - mass transfer , dissolution , dimensionless quantity , fluidized bed , heat transfer , mass transfer coefficient , materials science , thermodynamics , prandtl number , diffusion , chemistry , mechanics , chromatography , physics
Ionic mass transfer coefficients between the wall and a liquid fluidized bed of 0.043 inch lead glass spheres have been measured using the diffusion controlled reduction of ferricyanide ion at a nickel cathode. The coefficients obtained are correlated in terms of the dimensionless j factor and are compared with dissolution mass transfer results by this author and with a recent liquid fluidized bed heat transfer study (1) with these same particles. It is concluded that in the dissolution study either mechanical erosion or roughness effects or both were present. No analogy was found to exist between overall heat and mass transfer in a liquid fluidized bed in which there is a large difference between the Schmidt and Prandtl numbers because the dominant resistance is different for the two cases.