Liquid-side volumetric mass transfer coefficient in upward two-phase flow of air-liquid mixtures.

Abstract

Liquid-side volumetric mass transfer coefficients were obtained in vertical upward two-phase flow by desorbing carbon dioxide from liquid phases of water, aqueous glycerine and malt honey. Measurements were made mainly in the froth and the wavy annular flow using tubes of 10, 18 and 25 mm i.d. A correlation for the volumetric mass transfer coefficient was developed semi-empirically based on the analogy between mass and momentum transfer. Experimental data were correlated by two equations in dimensionless form corresponding to the two flow mechanisms of pseudo-laminar flow and turbulent flow.