\(355 \mathrm{kmol} / \mathrm{h}\) of a liquid feed at a high pressure (see part a) and \(25^{\circ} \mathrm{C}\) that is 2.6 \(\mathrm{mol} \mathrm{\%} \mathrm{ethane,} 10.6 \mathrm{~mol} \%\) propane, \(21.1 \mathrm{~mol} \%\) n-butane, \(26.7 \mathrm{~mol} \% \mathrm{n}\)-pentane, \(25.8 \mathrm{~mol} \% \mathrm{n}\)-hexane, and \(13.2 \mathrm{~mol} \% \mathrm{n}\)-heptane is fed to a flash drum. Use Eq. \((2-28)\).

a. What is the minimum feed pressure \((\mathrm{kPa})\) that will make the feed all liquid?

b. \(\mathrm{p}_{\text {drum }}=150 \mathrm{kPa}\) and the \(\mathrm{T}_{\text {drum }}=25^{\circ} \mathrm{C}\). Find V/F, \(\mathrm{x}_{\mathrm{i}}\), and \(\mathrm{y}_{\mathrm{i}}\).

c. \(\mathrm{p}_{\text {drum }}=150 \mathrm{kPa}\) and \(\mathrm{V} / \mathrm{F}=0.6\). Find \(\mathrm{T}_{\text {drum }}, \mathrm{x}_{\mathrm{i}}\), and \(\mathrm{y}_{\mathrm{i}}\).

Transcribed Image Text:

ar In K = a/T+ a/T 1/T + a/T + a16 + a ln p + a2/p2. apl In p+ ap2/p + ap3/p