Solve Exercise 8.11 with a right-triangle diagram.

In Exercise 8.11

One thousand kilograms per hour of a 45 wt% acetone in- water solution is to be extracted at 25?C in a Continuous, countercurrent system with pure 1,1 ,2-trichloroethane to obtain a raffinate containing 10 wt% acetone. Using the following equilibrium data, determine with an equilateral-triangle diagram:

(a) The minimum flow rate of solvent,

(b) The number of stages required for a solvent rate equal to 1.5 times the minimum, and

(c) The flow rate and composition of each stream leaving each stage.

The tie-line dataare:

Transcribed Image Text:

Acetone, Weight Fraction Water, Weight Fraction Trichloroethane, Weight Fraction 0.60 Extract 0.13 0.27 0.50 0.04 0.46 0.40 0.03 0.57 0.30 0.02 0.68 0.20 0.015 0.785 0.10 0.01 0.89 Raffinate 0.55 0.50 0.35 0.10 0.43 0.07 0.40 0.57 0.03 0.30 0.68 0.02 0.20 0.79 0.01 0.10 0.895 0.005