PARTICLE LIQUID MASS-TRANSFER IN MECHANICALLY AGITATED CONTACTORS

Results of a study on particle-liquid mass transfer in mechanically agitated contactors are reported. The effects of particle diameter, viscosity of liquid, type of impeller, clearance, agitation speed, and vessel diameter have been studied over a wide range. A simple correlation based on critical suspension speed which satisfies present data as well as data of previous workers is proposed. A theoretical basis for this correlation emerging out of the interrelationship of speed of agitation, drag force on particles, and the resulting particle-liquid mass transfer has been suggested.