AXDISP - Differential Extraction Column with Axial Dispersion

9 AXDISP - Differential Extraction Column with Axial Dispersion [Pg.521]

A consideration of axial dispersion dispersion is essential in any realistic description of extraction column behaviour. Here a dynamic method of solution is demonstrated, based on a finite differencing of the column height coordinate. Fig.l below shows the extraction column approximated by N finite-difference elements. [Pg.521]

5 Simulation Tools and Examples of Chemical Engineering Processes [Pg.522]

The detailed derivation of the model equations is described in Sec. 4.4.3 but is reformulated here in simple concentration terms. [Pg.522]

The column end sections require special treatment since diffusive flux is obviously absent exterior to the column. Thus, the column outlet concentrations X +i and Yq are based on an extrapolation of the concentration profiles over the additional half outlet section of the column, as again described in Secs. 4.4.2 and 4.4.3. [Pg.523]

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