NUMBER OF PLATES BY Mc $-$ CABE & THIELE

Example $2$

$11,000k\frac{g}{h}$ of equal parts $($in wt$)$ of Benzene $-$ Toluene solution is to be distilled in a fractionating tower at atmospheric pressure.

The liquid is fed as a liquid $-$ vapor mixture in which the feed consist of $75\%$ vapor. The distillate contains $94wt\%$ Benzene whereas the bottom products contains $98wt\%$ toluene. Using the equilibrium diagram of Benzene$-$Toluene mixture, determine by McCabe$-$Thiele's method:

The flow rate of distillate and bottom product in $k\frac{g}{h}$

E The minimum reflux ratio, $R_m.$

The number of theoretical stages required if the reflux ratio used is $2$ times the minimum reflux ratio

The position of the feed tray.

Data:

Molecular weight of Benzene $=78$

Molecular weight of Toluene $=92$