Tray Towers—The Method of Ponchon and Savarit

MULTISTAGE (TRAY) TOWERS—THE METHOD OF PONCHON AND SAVARIT 

The method will first be developed for the case of negligible heat losses. 

Consider the enriching section through tray n, envelope III, Fig. 9.17. Tray n is any tray in this section. Material balances for the section are, for total material, 

The left-hand side of Eq. (9.58) represents the difference in rate of flow of 

An enthalpy balance, envelope III, with heat loss negli ble,  

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