Distillation column design, McCabe-Thiele method
to accompany P.E. Readiness (Chemical) from MGI Management Institute
by William A. Levinson, P.E.
Note: this program's output does not constitute engineering advice. Engineering design must be performed by, or under the direct supervision of, a qualified engineer.
Component A = Benzene
Component B = Toluene
Relative volatility alpha = 2.50
Design requirements
Reflux ratio RD = 3.50
Overhead distillate xD = .9800
Feed composition xD = .5000
Feed condition q = 1.00
Bottom composition xB = .0200
Operating lines
Intersection [.5000, .6067]
Rectification line slope = .7778 Intercept = .2178
Stripping line slope = 1.2222 Intercept = -.0044
McCabe-Thiele Diagram

|
|
|
| 1 |
.9515 |
.9800 |
| 2 |
.9008 |
.9578 |
| 3 |
.8182 |
.9184 |
| 4 |
.7009 |
.8542 |
| 5 |
.5627 |
.7629 |
| Feed 6 |
.4321 |
.6555 |
| 7 |
.3055 |
.5237 |
| 8 |
.1895 |
.3689 |
| 9 |
.1052 |
.2272 |
| 10 |
.0537 |
.1242 |
| 11 |
.0254 |
.0611 |
| Reboiler |
.0108 |
.0266 |