![]() Then list all the assumptions underlying the calculation of that number. Half of the liquid condensate is returned to the top of the column as reflux and the rest is withdrawn as overhead product (distillate) at a rate of $85.0 \mathrm$. The vapor stream leaving the top of the column, which contains 98.0 mole\% pentane and the balance hexane, goes to a total condenser (which means all the vapor is condensed). ![]() The feed to a distillation column (sketched below) is a 45.0 mole\% $n$ -pentane- 55.0 mole\% n-hexane liquid mixture. Delermine the number of real stages _ Eslimale the feed point: Estimate the column diameler Determine the number of stages at this reflux ratio. Investigate the effect of reflux ratio On the number of theoretical slages. The liquid viscosity can be estimated using the data given in Appendix € (available in the online material at booksite Elsevier comfTowler). Use the De Priester charts in Dadyburjor (1978) to determine the relative volatility if solving by hand. The column will operale at 14 bar and the feed will be at its boiling point: Use the shortcut meth- ods and follow the procedure set out below. 3 months ago 17.4 The composition of the feed t0 debutanizer is given below_ Make preliminary design for col- Umn (0 recover 989 of the n-butane overhead and 9S% of the isopentane from the column base. ![]()
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