DETERMINATION OF THE KINETIC CURVES OF DRYING OF BLOCKS OF ADSORBENTS-DESSICANTS WITH DIFFERENT CROSS SECTIONS OF CHANNELS AND OF A GRANULATED ADSORBENT ON A CHANGE IN THE FLOW VELOCITY

摘要

The kinetics of convective drying (regeneration) of different types of adsorbents-dessicants with different geometric parameters has been studied. It is shown that adsorbents of a "channel" (cellular) type have a long constant-rate stage of drying, whereas a granulated polydisperse adsorbent is mainly dried at a variable rate. Adsorbents having a maximum water yielding capacity have been revealed. It has been established that the velocity of a drying gas flow substantially influences the process of moisture extraction from all types of adsorbents. In order to describe the kinetic curves of the given phenomenon, a model of a relaxation kinetic equation that quite satisfactorily describes the kinetics of drying of the adsorbents studied was used.