Modelling and simulation of a direct contact rotary dryer
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Date
1996
Authors
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Publisher
MARCEL DEKKER INC
Abstract
A mathematical model able to predict solid and drying gas temperature and moisture content axial profiles along a direct contact rotary dryer was developed. The study was focused on the drying kinetics based on phenomenological models. Two different drying mechanisms in the decreasing drying rate period were tested: proportional to the unbound moisture content and moisture diffusion inside the particle. Experimental data collected in a pilot-scale direct contact rotary dryer was used to validate the model. Soya and fish meals were used as drying material.
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Keywords
heat and mass transfer, meal drying, drying kinetics, volumetric heat transfer coefficient, residence time, TIME