A bubble-point binaiy mixture containing 5 mol% A in B is to be distilled o give a

Question:

A bubble-point binaiy mixture containing 5 mol% A in B is to be distilled o give a distillate containing 35 mol% A and a bottoms product containing 0.2 mol% A. If the relative volatility is constant at a value of 6, calculate the following algebraically, assuming that the column will be equipped with a partial reboiler and a partial condenser.

(a) The minimum number of equilibrium stages

(b) The minimum boilup ratio V/B leaving the reboiler