An investigation into slugging fluidized beds

Abstract A study of slugging fluidized beds has been carried out in four tubes ranging in size from 5–30 cm i.d. using particles having mean sizes 55–3380 μm and densities 0·85–2·8 gm cm−3. For all but the smallest column neither particle size nor size distribution had any effect on slugging. Equations are presented which enable us to calculate: 1. (a) The height and gas velocity at which slugging commences; 2. (b) The distance above the distributor at which further slug coalescence ceases; and 3. (c) The numerical value of the stable slugging frequency which is thereafter attained.