ELUTRIATJON OF PARTICLES FROM A BATCH SPOUTED BED IN SOLID-LIQUID SYSTEM

Abstract

Elutriation rate coefficient k'' was experimentally studied for the spouted bed (θ=60°) and the fluidized bed.
The effects of various particles and operating conditions on elutriation were examined and an empirical correlated equation was obtained with a deviation within ±20%.
It was found that the elutriation of fines was closely related to the length of particles bed L.
The difference of elutriation rate coefficient k'' in this work and k proposed by Hercules et al.⁴⁾ was investigated by considering the particles concentration distribution in bed, and it was recognized that k'' was better than k, considering the mechanism of the elutriation rate.