Nitromethane and water are separated in a stripping column that has a partial reboiler. There is no condenser and no liquid-liquid settler. The saturated liquid feed is \(8.0 \mathrm{~mol} \%\) nitromethane and has a feed rate of \(100.0 \mathrm{kmol} / \mathrm{h}\). Distillate is a saturated vapor. Bottoms is \(1.0 \mathrm{~mol} \%\) nitromethane. Pressure \(\mathrm{p}=1.0 \mathrm{~atm}\), and \(\mathrm{CMO}\) is valid. \((\mathrm{s} / \mathrm{B})=2 \times(\mathrm{s}\) \(/ \mathrm{B})_{\min }\).
Find \(\mathrm{y}_{\text {dist }}\) (mole fraction nitromethane), \(\mathrm{B}, \mathrm{D}\), and the number of equilibrium stages.
Equilibrium data are in Table 8-8, Problem 8.D16. Density data are also given in Problem 8.D16. Be sure to read the note on safety at the end of Problem 8.D16.

Problem 8.D16.

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TABLE 8-8. Water-nitromethane equilibrium data at 1.0 atm Liquid Vapor Liquid Vapor 7.9 34.0 81.4 50.1 16.2 45.0 88.0 50.2 23.2 49.7 91.4 50.3 31.2 50.0 92.5 51.3 39.2 50.2 93.5 52.9 45.0 50.2 95.1 55.9 55.2 50.2 95.9 57.5 63.8 50.2 97.5 65.8 73.0 50.2 97.8 68.4 77.0 50.2 98.6 79.2