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Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.v5.i2.50
11 pages

Drying of Porous Particles in Fluidized Beds: Modeling and Experiments

L. A. Calcada
DTQ/IT/UFRRJ, CP: 74501, 23581-970, Seropedica, RJ, Brazil

RESUMO

A mathematical model describing the drying of porous particles in a batch-fluidized bed was developed. This model takes into account the bubble, interstitial gas and solid phases, and is based on the conservation laws of mass and energy and on empirical correlations for heat and mass transfer between the phases. Solid particles were considered perfectly mixed in the fluidized bed while interstitial gas and bubble phase were assumed to be in plug-flow. The mathematical model comprises a set of non-linear differential equations that was solved numerically. Experiments using alumina particles were carried out in a fluidized bed dryer in order to collect data for the estimation of the model parameters. It was observed that the experimental data of outlet gas temperature, solid temperature and moisture content in the solids agree well with those obtained by the model simulation.


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