Abstract
The liquid-side mass transfer performance in an annular bubble column with a rotating cylinder was studied experimentally for various operating conditions and rotor diameters. The limitation for the mass transfer varied from an aerationcontrolling one at relatively high gas rates to an agitation-controlling one at relatively high rotor speeds, in a manner similar to the case of an aerated mixing vessel. The volumetric mass transfer coefficients increased with increasing rotation speed and diameter of the rotor in the agitation-controlling region and were larger than those for a bubble column and lower than those for an aerated mixing vessel at the same power consumption.
