~~Die Auslegungskriterien bei heterogenen chemischen Umsetzungen in Flussig/Flussig-Systemen entsprechen formal denen der klassischen physikalischen Extraktion. Komplexere Modelle wcrden vorgestellt, die den Stoffaustausch am Einzeltropfen bei der Extraktion mit chemischer Reaktion und bei der Flussigmembran-Permeation beschreiben. Die Einbindung dieser Modelle in Vermischungsmodelle, wie dem Dispersionsmodell bzw. dem Konvektivmodell, wird bei der Berechnung von Konzentrationsverlaufen in geruhrten Kolonnen gezeigt und die Signifikanz der Modellparameter diskutiert.Design criteria for extraction with chemical reaction and liquid membrane permeation. Design criteria for extraction and liquid membrane permeation are discussed and related to these classical extraction columns. Well known models, like the diffusion and the forward mixing model, are used to describe the concentration profile in a column. Mass transfer models for a single globule, like the two-layer and the shrinking core model, are incorporated. The complex chemical interactions on an interface are formulated. A final discussion considers the relevance of the model parameters and their influence on mass transfer.
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