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(P_{sat.}(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 = (RT_{c}/P_{c})Z_{RA}
^{[1 + (1-Tr)^(2/7)]}
If value of Z_{RA} is not available, it is calculated based on following relation
Z_{RA} = 0.29056 - 0.08775ω
................. | (1) | (2) |
---|---|---|
Tc (K) | ||
Pc (bara) | ||
ω | ||
Z_{RA} |
UNIQUAC parameters
(1) | (2) | |
---|---|---|
r_{i} | ||
q_{i} | ||
q_{i}' |