Collect. Czech. Chem. Commun. 1998, 63, 2103-2113

Effect of Liquid Axial Mixing on Local kLa Values in Individual Stages of Multiple-Impeller Vessel

Tomáš Moucha, Václav Linek and Jiří Sinkule

Department of Chemical Engineering, Prague Institute of Chemical Technology, 166 28 Prague 6, Czech Republic


The effect of the liquid phase axial mixing on rlocalr kLa values, measured by dynamic pressure method (DPM), in individual stages of multiple-impeller vessel is evaluated. The data measured by the DPM in our previous papers are corrected for this effect. Various calculation methods for kLa in the upper stages based on single-impeller vessel correlations are compared.

Keywords: Mixing; Mass transfer; Axial dispersion; Multiple impeller.