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Contact Drying Simulation of Particulate Materials: A Comprehensive Approach

Authors: Joaquín Martínez, Marco Intelvi, Apolinar Picado

Abstract:

In this work, simulation algorithms for contact drying of agitated particulate materials under vacuum and at atmospheric pressure were developed. The implementation of algorithms gives a predictive estimation of drying rate curves and bulk bed temperature during contact drying. The calculations are based on the penetration model to describe the drying process, where all process parameters such as heat and mass transfer coefficients, effective bed properties, gas and liquid phase properties are estimated with proper correlations. Simulation results were compared with experimental data from the literature. In both cases, simulation results were in good agreement with experimental data. Few deviations were identified and the limitations of the predictive capabilities of the models are discussed. The programs give a good insight of the drying behaviour of the analysed powders.

Keywords: Vacuum, Atmospheric Pressure, Agitated bed, Penetrationmodel

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1071488

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