Mass transfer analysis tray efficiency

Use mass transfer analysis to determine tray efficiency of binary systems... 

A major assumption made in the column models of Chapters 3 through 13 was the equilibrium stage. Tray hydraulics provides additional information essential for applying mass transfer theories to evaluate the column performance with a rate-based approach. This analysis provides a basis for calculating the tray efficiency associated with an equilibrium stage. The topics of rate-based analysis and tray efficiency are also discussed in this chapter. 

This rate-based analysis of trayed columns gives an estimate of the number of overall gas phase mass transfer units corresponding to a given tray. The practical application of this analysis is to provide a means for estimating the tray Murphree vapor efficiency discussed in Section 14.3. 

Size the Distillation Column. This includes the hydraulic analysis to establish operating ranges, pressure drop, and mass transfer efficiency. The result is a set of dimensions, including column diameter and height, number of actual trays (or height of packed bed), details of internal devices, and profiles of temperature and pressure. 

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