McCabe-Thiele Diagram
Graphical method for binary distillation
Scroll horizontally to see full diagram
Blue line: Equilibrium curve (VLE)
Red lines: Operating lines (rectifying & stripping)
Green line: q-line (feed condition)
Results
Stage Results
11
Total Stages
5
Feed Stage
R/Rmin = 1.82
Flow Rates (mol/h)
| Stream | Flow Rate | Composition |
|---|---|---|
| Feed (F) | 100.0 | 0.500 |
| Distillate (D) | 50.0 | 0.950 |
| Bottoms (B) | 50.0 | 0.050 |
Internal Flows (mol/h)
| Section | Liquid | Vapor |
|---|---|---|
| Rectifying | L = 100.0 | V = 150.0 |
| Stripping | L̄ = 200.0 | V̄ = 150.0 |
Key Parameters
Minimum Reflux Ratio (Rmin)1.100
Operating Reflux Ratio (R)2.000
R / Rmin1.818
Boilup Ratio (V̄/B)3.000
Example Presets
Vapor-Liquid Equilibrium
α = (y/x) / ((1-y)/(1-x))
Feed Conditions
q=1: sat. liquid, q=0: sat. vapor
Column Specifications
Rmin = 1.100