The results of experimental determination of temperature fields in the vicinity and in bowl of a rotary disperser during granulation of multicomponent heterogeneous liquid systems in a fluidized bed are presented. These results confirm the provisions of the physical model regarding a significant increase in the geometric dimensions of the irrigation zone. Based on the results of experimental studies, it was confirmed that the use of a rotary bowl disperser with a perforated lateral surface, due to the increased spray zone and the presence of intensive circulation of moistened particles, allowed the implementation of a layered-structure granulation mechanism during dehydration of liquid multicomponent heterogeneous systems with a stable process kinetics with a granulation coefficient of more than 90% and an increase in productivity of the granulated product.