Vapor Liquid Equilibria
Binary VLE
Binary Vapor Liquid Equilibrium (VLE) calculation plots Px-y, Tx-y diagram based on Wilson, NRTL and UNIQUAC acitivity coefficient model.
Data
Antoine Equation
ln(Psat.(mmHg)) = A - B/(T(°K)+C)
| (1) | (2) | |
|---|---|---|
| Name | ||
| A | ||
| B | ||
| C |
Binary Interaction Parameters
| A | A |
|---|---|
| A | A |
| α12 |
Liquid Molar Volume
Modified Rackett equation is used to estimate liquid molar volume.
V = (RTc/Pc)ZRA
[1 + (1-Tr)^(2/7)]
If value of ZRA is not available, it is calculated based on following relation
ZRA = 0.29056 - 0.08775ω
| ................. | (1) | (2) |
|---|---|---|
| Tc (K) | ||
| Pc (bara) | ||
| ω | ||
| ZRA |
UNIQUAC parameters
| (1) | (2) | |
|---|---|---|
| ri | ||
| qi | ||
| qi' |