Packed beds of granular solid materials are used extensively in various chemical operations,
such as drying, extraction, adsorption and heat regeneration. In order to determine
the heat and mass transfer coefficients necessary in design and analysis of these
operations, numerous studies have been carried out mainly on laboratory size equipment.
To recover deficiency, some research measurements were performed by laboratory and
semi-plant apparata. Flow-through drying has been chosen for experimental examinations.
The transfer factors were determined by adaption of experimental results and solution
of mathematical models.