(Solved): Graphical Analysis of Absorption and Stripping 1. (40 points) Absorption of acetone from air. 95% o ...

Graphical Analysis of Absorption and Stripping 1. (40 points) Absorption of acetone from air. $95\%$ of the acetone vapor in an $85\mathrm{vol}\%$ air stream is to be absorbed by countercurrent contact with pure water in a valve-tray column. The feed gas flow rate is $100\mathrm{kmol}/\mathrm{h}$. The column will operate at $20^{?}\mathrm{C}$ and $101\mathrm{kPa}$. Equilibrium data for acetone-water at these conditions are as follows: a. (10 pts) Make a plot of the equilibrium curve (use mole ratios instead of mole fractions). You can make a plot in Excel/another software or draw the curve by hand using the grids provided in Figure 1 on the next page. Make sure to write down your calculations. b. (10 pts) Determine the minimum value of $L^{?}/V^{?}$ graphically. c. (15 pts) Determine the total number of equilibrium stages using a value of $L^{?}/V^{?}$ of 1.25 times the minimum. d. (5 pts) Determine the concentration of acetone in the exit water.