The relationship between binary interaction parameters and pressure
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What is the relationship between the binary parameters of different material property equations and pressure? One literature article mentions that the binary interaction parameters of the NRTL model vary with pressure, but Aspen does not reflect this pressure dependence of the binary interaction parameters. What is the reason for this?
Regress the binary interaction parameter using TXY data under different pressure conditions.
You should understand it this way: first, select a wider pressure range to obtain TXY data at different pressures, and then use all these data to determine the binary parameters of the driver’s license. Then such an equation can in principle be used to describe the phase equilibrium over this wide pressure range