THE BEHAVIOR OF SUSPENDED SOLID PARTICLES AND LIQUID IN BUBBLE COLUMNS

The longitudinal concentration distribution of solid particles and liquid mixing in 6.6, 12.2 and 21.4 cm i. d. bubble columns were measured and were analyzed by using diffusion model. The longitudinal dispersion coefficient of solid particles and liquid based on actual mean slurry velocity, the mean settling velocity of solid particles, and the concentration of solid particles at the top of the column, respectively, were correlated with dimensionless groups. From these correlations empirical equations were obtained. The values of concentration of solid particles calculated from the empirical equations agreed with the observed values within ±20%.