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The mixing of solid particles in a fluidized bed
Author(s) -
Jinescu Gheorghitza,
Teoreanu I.,
Ruckenstein E.
Publication year - 1966
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.5450440204
Subject(s) - fluidized bed , diffusion , mixing (physics) , wax , paraffin wax , mechanics , materials science , thermodynamics , tube (container) , physics , composite material , quantum mechanics
In this paper a new experimental method, based on the freezing of the fluidized bed by the aid of paraffin wax is used for the determination of the diffusion coefficient of the solid particles. The experimental diffusion coefficients are compared with those given by a theoretical equation. In order to explain the time and spatial dependence of the experimental diffusion coefficient a cinematographic study supplemented by visual observations is also made. One concludes that for small tube diameters a circulation motion of the solid particles takes place which is responsible for the mentioned effect.