Hydrodynamics and interphase heat transfer in a swirled spouted bed

A new modification of a spouting technique, a swirled spouted bed (SSB), is developed and proposed to increase the efficiency of heat treatment of polyfractional and fine particles and to reduce their entrainment. It is shown that under the developed spouting conditions the SSB pressure drop is 20-30% and incipient spouting velocity is 40-50% lower whereas an interphase heat transfer rate is 15-25% higher as compared to a classical spouted bed (CSB). An empirical correlation is proposed to determine the SSB pressure drop under developed conditions.