A distillation column with a total condenser and a partial
reboiler is separating ethanol and water at 1 kg/cm2 pressure. Feed
is 32.0 mol% ethanol and 30 °C. Feed flow rate is 100.0 kmol/h. The
distillate product is a saturated liquid and 80.0 mol% ethanol. The
condenser removes 2,065,113 kcal/h. The bottoms is 4.0 mol%
ethanol. Assume CMO is valid. Find the number of stages and the
optimum feed stage location. CP,L,EtOH = 24.65 cal/(mol °C) at 0
°C.





