PROBLEM NO$.1$ BINARY DISTILLATION McCabe

THIELE Method

Example $8\mathrm{.}15$ : A mixture of benzene and toluene containing $40$ per cent benzene and $60$ per cent toluene is to be separated in a fractionating column to give a product $($distillate$)$ containing $96$ per cent benzene and a bottom product containing $95$ per cent toluene. The feed is a mixture of two third vapour and one third liquid. Find the number of theoretical stages required if reflux ratio of $1\mathrm{.}5$ times the minimum is used and if relative volatility is $2\mathrm{.}5.$

Relative volatility $==2\mathrm{.}5$

With the help of relative volatility, generate $x-y$ data and plot $y$ v$/$s $x.$

For generating $x-y$ data, assume $x=0,0\mathrm{.}1,0\mathrm{.}2,$dots$1$ and find the corresponding values of $y$ from the relation :

$y=\frac{x}{1+(-1)x}$