Neue Testsysteme für die Flüssig/Flüssig‐Extraktion

Abstract

dieses Berechnungsverfahren ist es, daB zu seiner Anwendung nur meBtechnisch einfach zu erfassende GroBen benotigt werden.Ausgehend von einer Massenbilanz an einem Volumenelement im Filterkuchen wird bei der Herleitung des Dispersionsmodells eine Differentialgleichung fur die Konzentration im Filterkuchen aufgestellt:

The Effect of Viscosity on Mass Transfer in Pulsed Sieve-Tray Extraction Columns

“…(1) in combination with the correlation of Calderbank and Moo-Young [6] according to Eq. (2) for the mass transfer resistance in the continuous phase agree well with the experimental findings 1) . Compared to rigid spheres, mass transfer enhances with increasing drop size.…”

“…Two other test systems were proposed by Berger [1]. To make the experiments comparable, the European Federation of Chemical Engineering (EFCE) established three standard test systems.…”

One-Dimensional Modeling of Mass Transfer Processes in an Annular Centrifugal Contactor

“…Relevant geometrical data of the type V02 ACC were measured manually and introduced in the simulation. Different standard test systems for physical, liquid extraction processes proposed by the EFCE [10,11] were simulated for a range of operating conditions. For simulation, the respective datasets of physical properties published by Misek et al [9] and Berger et al [10] were used.…”

“…Misek [10] and Berger [11] published experimental datasets for diffusion coefficients, which are limited to specific systems of components, limited concentration ranges and three temperatures. These data sets were measured in a diffusion cell using the diaphragm method after Stokes.…”

“…To have comparable experimental and estimated datasets, the values were estimated using the same temperatures and systems of components used by Misek and Berger for comparison (Figure 3). Misek [10] and Berger [11]) with their corresponding estimated diffusion coefficients D est using the methods of Einstein, Sutherland and Edward (the target line corresponds to a deviation between experimental and estimated diffusion coefficients of zero).…”