Ethanol-tert-Butyl Alcohol-Water in a Sieve Tray Column

Example 1222 Distillation of Ethanol-tert-Butyl Alcohol -Water in a Sieve Tray Column 

A mixture of ethanol(l)-t-butyl alcohol(2)-water(3) is being distilled in a sieve tray column operating in the froth regime. Estimate the mass transfer coefficients in a dispersion 

These values are consistent with a superficial velocity of 1 m/s and a total gas hold-up e of 0.8 with e = + Ejj 2 1 I- 

At total reflux, the composition of the liquid leaving the tray is the same as the composition of the vapor entering the tray 

The liquid is considered to be well mixed. The equilibrium vapor composition is determined from a bubble point calculation to be 

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