Abstract
AbstractThe practical application of an extraction column model which takes into account the influence of drop‐size distribution (i.e. the ‘forward mixing’ model) is brought forward by the generation, from experimental data, of values of the mass transfer and axial dispersion coefficients required by the model. Values of these coefficients were generated from drop‐size distribution and solute concentration profile measurements in a 22 cm diam. rotating disc contactor. The use of the Handlos‐Baron drop mass transfer model is justified. The resulting continuous phase transfer coefficients were found to be dependent only on disc speed. Continuous phase axial dispersion coefficients were much higher than tracer‐correlation predicted values at higher flows, and larger drop sizes. An explanation for this is presented.
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