Ethanol - n-propanol mixture at 1000 kmol / hr flow rate containing 60% ethanol as a mole percentage, one containing 30 racks It is separated in the distillation column into a head product containing...

Ethanol - n-propanol mixture at 1000 kmol / hr flow rate containing 60% ethanol as a mole percentage, one containing 30 racks It is separated in the distillation column into a head product containing 99% ethanol and a base product containing 0.8% ethanol. Feed stream enters the column as saturated steam. The relative volatility of ethanol is 2.1 and can be considered constant. Appropriate using Fenske-Underwood-Gilliland correlations with assumptions,

a. Find the minimum number of racks.

b. Determine the minimum ratio of riflax.

c. Find the real rate of riflax