Effects of particle size and concentration on bubble coalescence and froth formation in a slurry bubble column

A new approach for simulating the formation of a froth layer in a slurry bubble column is proposed. Froth is considered a separate phase, comprised of a mixture of gas, liquid, and solid. The simulation was carried out using commercial flow simulation software (FIRE v2014) for particle sizes of 60–150μm at solid concentrations of 0–40vol%, and superficial gas velocities of 0.02–0.034m/s in a slurry bubble column with a hydraulic diameter of …