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Modeling of particle—liquid heat and mass transfer in multiphase systems with the film—penetration model

✍ Scribed by C.L. Briens; M. Del Pozo; K. Chiu; G. Wild

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
669 KB
Volume
48
Category
Article
ISSN
0009-2509

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✦ Synopsis

Abetrae-Particle-liquid transport phenomena in multiphase systems were studied by measuring particltliquid heat and mass tram&r coeflicients in liquidalid and gas-liquid-solid 6xed and fluidized beda, under the same conditions. The apparent lack of analogy bctwcun heat and mass transfers was explained by the film-penetration model. The two parameters of this model, the film thickness and the fractional rate of surface renewal, can be obtained by measuring the mast and heat transfer coefficients. Variations in gas velocity, liquid velocity or radial position have Merent effects on the film thickness and the fractional rate of surface renewal. The &n-penetration model is required for accurate predictions of particle+liquid mass transfer under typical industrial conditions.

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