Effects of Mass Transfer on the Steady State and Dynamic Performance of a Kuhni Column - Experimental Observations

abstract

Experimental data obtained in a pilot-scale Kuhni liquid-liquid extraction column were used to obtain local drop size distributions, dispersed-phase hold-up profiles, and solute concentrations. To obtain information about the dynamic behavior of the column, several experiments were planned and performed, under both steady and controlled transient conditions, with and without mass transfer. The analysis of the effects of the presence of a transferring solute (not of the mass transfer flux itself) on the dispersion's steady state and dynamic behavior was the main objective. For this, we imposed forced step variations in the operating conditions - agitation intensity and continuous and dispersed-phase flowrates.

keywords

EXTRACTION COLUMN; ULTRASONIC TECHNIQUE; LIQUID DISPERSIONS; HYDRODYNAMICS; BEHAVIOR; MODEL

subject category

Engineering

authors

Gomes, LN; Guimaraes, ML; Stichimair, J; Cruz-Pinto, JJ

our authors

Groups

acknowledgements

This work was carried Out under the gratefully acknowledged cooperation of Professor J. Stichimair and his staff of Lehrstuhl fur Fluidverfahrenstechnik at the Technical University of Munich.

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