Mathematical model for batch drying in an inert medium fluidized bed

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A modified three-phase model is proposed for batch drying of fine powders in an inert medium fluidized bed. The overall heat and mass transfer coefficients between the interstitial gas and solid phases have been determined by the proposed surface-stripping model in which the Blot number is a governing parameter. The effects of gas velocity, inlet gas temperature and mass ratio of starch to inert particles on the drying characteristics of starch in a 0.083 m ID x 0.80 m high medium fluidized bed have been determined. Based on the proposed model, the internal resistance of mass transfer at the powder is equal to the external resistance. The model predicts well the bed temperature, humidity of outlet gas, moisture content of solid particles, heat and mass transfer in an inert medium fluidized bed.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
1999-05
Language
English
Article Type
Article
Keywords

SOLIDS

Citation

CHEMICAL ENGINEERING TECHNOLOGY, v.22, no.5, pp.443 - 450

ISSN
0930-7516
DOI
10.1002/(SICI)1521-4125(199905)22:5<443::AID-CEAT443>3.0.CO;2-L
URI
http://hdl.handle.net/10203/4031
Appears in Collection
CBE-Journal Papers(저널논문)
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