Example 5-8 equilibrium data:

4. (20 points) An inlet water solution of 400kg/h containing 10 wt% acetone is extracted with the pure solvent trichloroethane in a countercurrent packed tower at 25 C. Water and trichloroethane are essentially immiscible. The exit concentration in the water (raffinate) stream is set at 0.5 wt% acetone. Using the equilibrium data given in Example 5-8, fit the data to a polynomial (use the polynomial to estimate m at the inlet and outlet compositions). If the height of a transfer unit HoR = 1 m, calculate the number of transfer units Nor and the tower height. X 0.0120 0.0196 0.0294 0.0476 0.0462 0.0741 0.0571 0.0909 0.0833 0.1304 0.1081 0.1666 0.1316 0.2000 y*