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Separation Process Engineering: Includes Mass Transfer Analysis, Fourth Edition by Phillip C. Wankat

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Chapter 16. Mass Transfer Analysis for Distillation, Absorption, Stripping, and Extraction

Thus far, we have used an equilibrium-stage analysis procedure even in packed columns in which there are no stages. A major advantage of this procedure is that it does not require determination of the mass transfer rate. A major disadvantage is mass transfer is not analyzed.

In packed columns, it is conceptually incorrect to use the staged model even though it works if a correct height equivalent to a theoretical plate (HETP) is used. In this chapter we develop a physically more realistic model for packed columns based on mass transfer between phases. After developing the model for distillation, we discuss mass transfer correlations that allow prediction ...

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