Mass Transfer in a closed stirred gas/liquid contactor: Part 1: The mass transfer rate kLS

摘要

Liquid phase mass transfer rates kLS for the absorption of oxygen in tap water and in aqueous ionic solutions have been determined in two closed stirred tank contactors for a power input between 3 and 70 W/kg and (impeller diameter)f(tank diameter) ratios DifT of 0.3, 0.35 and 0.4. The contactors had diametersudof 0. I9 and 0.6 m. The dispersed phase fraction was 1% by volume in all experiments. The values of kLS were determined using two different techniques:ud(1) a transient physical absorption method; and (2) the sulphite method.