Interstage mixing in an Oldshue‐Rushton liquid‐liquid extraction column

Abstract

AbstractInterstage mixing was measured in a 4‐in. Oldshue‐Rushton column fed with a salt solution at the top and distilled water at the diluted salt solution leaving at the top.Mixing between stages is relatively slight at low agitator speeds, but increases very rapidly with speed once the turbulent region is reached. Interstage mixing is reported in terms of bulk backflows and also in terms of eddy diffusivities. The amount of interstage mixing is similar to that reported in the literature for rotating disc contactors.Variations in the horizontal baffle plate design were also studied.