Question$2$:

Multicomponent distillation using FUG method

A liquid feed containing $10$mol$\%$ ethane $($C$2),30$mol$\%$ propane $($C$3)$ and $45$mol$\%n-$butane $($nC$4)$ and $15$mol$\%n-$pentane $($nC$5)$ is to be distilled in a tray tower with partial reboiler and total condenser. The feed rate is $100$kmo$\frac{l}{h}$ and at its bubble point. It is desired to recover $98\%$ of propane in the distillate and $97\%$ n$-$butane in the bottoms product. Assume relative volatility is constant for the column. The values are given below:

$\backslash$table$[[$Feed components,$C2,C3,nC4,nC5$