Effect of tapered angle on hydrodynamics of homogenous ternary mixture of regular particles in a three-phase tapered fluidized bed

摘要

Hydrodynamics characteristics, namely bed pressure drop, bed fluctuation and expansion ratios have been studied for regular particles in a three-phase tapered fluidised bed.For this, experiments have been carried out in different tapered columns with glass beads as solid phase, compressed air as gas phase and water as the liquid phase.The effect of tapered angle, initial static bed height, average particle size and superficial gas velocity on the hydrodynamic characteristics has been studied.Correlations have been developed for the three hydrodynamic characteristics using both dimensional and statistical analysis.Experimental values of bed expansion and fluctuation ratios have been found to agree well with those calculated from developed correlations.