Pressure drop in solid—liquid fluidised beds

Abstract

Models have been developed for the prediction of wall pressure drop in solid—liquid fluidised beds (SLFB). Both laminar and turbulent regimes have been considered. These models explain the pressure drop characteristics of the limiting cases of SLFB: the fixed bed and the single-phase pipe flow. Pressure drop was measured in a 78 mm i.d. solid—liquid fluidised bed. Particle size was varied in the range of 0.55 – 3.1 mm. The bed voidage was varied in the range of 0.4 to 0.9. Good agreement has been shown between model predictions and experimental observations of pressure drop.