Abstract
A packed tower is modelled transiently for fluid-solid reactions. Heat and mass transfer are considered, with allowance for structural changes. The Knudsen, molecular and bulk flow terms are accounted for in the packed tower and within the pellets of the packing. Homogeneous, heterogeneous and catalytic reactions are handled. Conduction, convection and radiation model of heat transfer are considered. The thermophysical, structural and transport properties are included as variables. Three levels of space are used in the system: packed tower, macroporous pellets, and microporous zone (grain). The solution in these spaces includes the distributions of concentrations, temperature, pressure and solids conversion as well as all other parameters at any given time. The three zones are linked together via boundary values.
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