Heat and mass transfer during drying of a fixed bed of wet porous particles in superheated steam is modeled. The mathematical model is based on the averaging approach using two changes of scale. Convective heat transfer is assumed between the granular bed and steam. To take into account the thermal nonequilibrium between the porous particle and fluid phase, a two-temperature macroscopic model is used to describe heat transfer. The mass transfer is introduced in the form of drying kinetics deduced from a single-particle model describing superheated steam drying. This model was developed in a previous paper. In this work, correlations of mass flux deduced from the single-particle model are presented and incorporated in the fixed-bed model. The set of partial equations describing the steam drying of a fixed bed is solved using the finite volume method, which was achieved by the computer program written in FORTRAN language. To validate this model, the predicted results are compared with the experimental results from the literature and good agreement was obtained.
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