Simple and accurate shortcut procedure to account for axial dispersion in countercurrent separation columns

A method is proposed of correcting the design of countercurrent sepn. columns for the impact of axial-dispersion effects. After computing the required no. of transfer units (NTU) employing conventional procedures based on the plug-flow assumption, the method permits the estn. of a correction factor accounting for deviations from plug flow. This factor is used to correct the NTU for such effects. The procedure also works in correcting height-of-transfer-unit data that are affected by axial dispersion. The method is straightforward and simple to use, and the results agree in simple cases within a few percent with those obtained from a rigorous soln. of the model of axial dispersion. [on SciFinder (R)]


Published in:
Industrial & Engineering Chemistry Research, 30, 6, 1248-57
Year:
1991
Laboratories:




 Record created 2006-02-27, last modified 2018-03-17


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