A stripping column with an additional feed is separating two feeds containing acetone and ethanol. The column has a partial reboiler and no condenser. Feed 1 is \(70.0 \mathrm{~mol} \%\) acetone, has a feed rate \(\mathrm{F}_{1}=200.0 \mathrm{kmol} / \mathrm{h}\), and enters as a saturated liquid at the top of the stripping column. Feed 2 is \(44.0 \mathrm{~mol} \%\) acetone, has a flow rate \(\mathrm{F}_{2}=100.0 \mathrm{kmol} / \mathrm{h}\), is a two-phase mixture that is \(40.0 \mathrm{~mol} \%\) vapor, and enters the column at its optimum feed location. Boilup ratio \(abla / \mathrm{B}=2\), and bottoms is 26.0 \(\mathrm{mol} \%\) acetone. CMO is valid. VLE data are in Problem 4.D7. Find

Data From Problem 4.D7.

a. Distillate and bottoms flow rates, \(\mathrm{D}\) and \(\mathrm{B}\), and distillate mole fraction of acetone \(\mathrm{y}_{\text {dist }}\).

b. Optimum feed location for feed \(\mathrm{F}_{2}\) and the total number of equilibrium stages required.

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A distillation column with a total condenser is separating a feed that is 30 mol% acetone from ethanol. Distillate xD = 0.90, and bottoms xp = 0.13, both mole fractions acetone. Assume CMO is valid. L/V = 0.8. Boilup ratio is