Mass transfer in structured packing: A wetted-wall study
Date
2001
Authors
Erasmus A.B.
Nieuwoudt I.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
A short wetted-wall column was used to measure and correlate gas-phase mass transfer coefficients for various pure components evaporating counter current into an air stream. Mass transfer coefficients were also measured for binary mixtures. Both a smooth and a complex surface, similar to the surface of the structured packing Mellapak, were used in the study. The gas-phase mass transfer coefficients for the smooth surface were correlated with Shg = 0.0044RegScg0.5We10.111. The results for the complex surface were correlated with Shg = 0.0036Reg0.76Scg0.5 Re10.41Bo-0.13. Mass transfer coefficients for binary mixtures were compared with these gas-phase mass transfer coefficients. Enhanced mass transfer was observed for systems with large differences in pure-component surface tensions. This was not the case for binary systems with small differences in the pure-component surface tensions. Negligible liquid-side resistance to mass transfer was found in all systems in this study. High-viscosity liquids deviated from the proposed correlations.
Description
Keywords
Binary mixtures, Mass transfer, Surface tension, Viscosity of liquids, Gas phase mass transfer coefficients, Chemical plants, mass transfer, article, gas transport, mass, molecular dynamics, surface property, surface tension, viscosity, wettability
Citation
Industrial and Engineering Chemistry Research
40
10
40
10