Question $1$

There are different routes through which acetic acid can be produced. One route is carried out via oxidation of ethylene $(C_2{H}_4)$ into acetic acid. In addition, the parallel reaction, that is$,$ oxidation of ethylene into water and $C{O}_2,$ also takes place. The reactor product stream will contain $89\mathrm{.}9$ wt $\%$ acetic acid, $7\mathrm{.}1$ wt $\%C{O}_2,2\mathrm{.}9$ wt $\%$ water, and trace amounts of inert $N_2($from the liquefaction process of air$),$ unreacted ethylene, and unreacted $O_2.$ Using a "Flash$2"$ type drum $($i$.$e$.,$ cooling tank$),99\mathrm{.}96\%$ of entering acetic acid and all water will be knocked out, in addition to a small fraction of $C{O}_2.$ The yapor stream will contain $98\mathrm{.}1$ wt$\%C{O}_2,1\mathrm{.}2$ wt$\%N_2,$ o$.6$ wt$\%$ acetic acid, and trace amounts of $C_2{H}_4,$ water, and $O_2.$ To simplify your task, we will assume that $100k\frac{g}{h}$ of yapor feed stream with a composition of $98\mathrm{.}2$ wt $\%C{O}_2,1\mathrm{.}2wt\%N_2,$ and $0\mathrm{.}6$ wat $\%$ acetic acid, at $40$@$C$ and $10$ bar, will be fed to a "RadFrac" distillation tower, use NIST$-$TDE experimental data for suitable binary mixture. From the top of the distillation tower, a second feed stream of $150k\frac{g}{h}$ fresh water at $25C$ and $10$ bar will be introduced, as shown in Figure $1.$ Your task is to design a "RadFrac" absorption unit that will scrub acetic acid from $CO2("$CO$2-$FEED"$)$ stream so that we end up with an inert outlet gas stream, mainly composed of $C{O}_2$ and trace amounts of N$2.$ This CO$2-$based gas stream can be used as a blanket $($inert$)$ atmosphere purged onto hydrocarbon storage vessels. Report the composition, $P,T,$ and flow rate for top and bottom streams, the reflux ratio, and number of theoretical stages. Use "UNIQUAC" method for your simulation.