A mixture of heptane (A)-ethyl benzene (B) containing 40 mole percent heptane is fed into a distillation column operating continuously at atmospheric pressure at a flow rate of 2000 kg/hour and separated into a head product containing 95 mole percent heptane and a base product containing 90 mole percent ethyl benzene. The feed stream is fed to the column as a liquid at boiling point. Since the riflux ratio is 2.5 under process conditions, find the theoretical number of racks required and the location of the feed rack by making the appropriate assumptions. A mixture of heptane (A)-ethyl benzene (B) containing 40% heptane in mole percent is fed to a distillation column operating continuously at atmospheric pressure with a flow rate of 2000 kg/hour and separated into a head product containing 95% heptane in mole percent and a base product containing 90% ethyl benzene. The feed stream is fed to the column as a liquid at the boiling point. Since the riflux ratio is 2.5 under process conditions, find the theoretical number of racks required and the location of the feed rack by making the appropriate assumptions.

Equilibrium values of heptane (A)-ethyl benzene (B) system under process conditions

\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|} \hline x (sivi faz) & 0,00 & 0,08 & 0,185 & 0,251 & 0,40 & 0,50 & 0,651 & 0,788 & 1,00 \\ \hline y (buhar faz) & 0,00 & 0,233 & 0,428 & 0,514 & 0,665 & 0,74 & 0,834 & 0,904 & 1,00 \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|c|c|c|c|c|c|} \hline x (sivi faz) & 0,00 & 0,08 & 0,185 & 0,251 & 0,40 & 0,50 & 0,651 & 0,788 & 1,00 \\ \hline y (buhar faz) & 0,00 & 0,233 & 0,428 & 0,514 & 0,665 & 0,74 & 0,834 & 0,904 & 1,00 \\ \hline \end{tabular}