MODELLING OF DRYING IN PACKED BED BY SUPER HEATED STEAM
Thi Thu Hang Tran
Department of Heat Engineering, School of Heat Engineering and Refrigeration Engineering, Hanoi University of Science and Technology, 1st Dai Co Viet, Hanoi Vietnam
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This work presents the continuum-scale model of packed bed superheated steam drying of ceramic particles. In this model, Reaction Engineering Approach (REA) model is built to describe the mass transfer between particles and agent. In the REA model, the dehydration of porous particle is described like a reaction which needs the activation energy to overcome the energy barrier. After successful validation, the single particle drying model is combined with the continuous heat and mass conservation equations of the bed to simulate the drying process. The initiative results obtained from the bed simulations indicate that this scaling-up strategy proposed in this work can be applied to describe superheated steam dryers.