Co-current Pipe Flow Research Articles

Intensifying Mass Transfer Between Immiscible Liquids: Using Screen-type Static Mixers

The use of screen-type static mixers to promote inter-phase mass transfer in co-current pipe flow was found to result in volumetric mass transfer coefficients as high as 9 s −1 being achieved at low specific energy consumption rates. Very high extraction efficiencies were also reached within residence times of about 1 s. This exceptional performance can be attributed to the controlled hydrodynamic condition achievable in this contactor, and the ability to generate fine dispersions in the high energy dissipation regions behind screens.

FRICTION FACTORS IN TWO PHASE HORIZONTAL PIPE FLOW

Methods for prediction of gas wall, liquid wall and interfacial friction factors for two phase horizontal co-current pipe flow are discussed critically after being checked against reliable data obtained under a wide range of conditions. The use of equivalent diameters and the Blasius relation were shown to be valid for estimation of the gas wall friction. Prediction of liquid wall and interfacial friction factors proved to be more difficult but estimation improved if consideration was given to the effects of liquid holdup and interfacial liquid shape