Regarding the binary interaction parameter
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Guys, for a three-component ABC feed using the NRTL property equation, shouldn’t there be three binary interaction parameters, namely AB/AC/BC? Why do I only have two groups? If we continue to simulate in this way, will it ultimately affect the hydraulic data?
Hydraulic data is used to calculate the tower diameter, because calculations using tray sizing always result in errors; I don’t know why
There should be 3 groups in theory; maybe one of them wasn’t included. It’s best to check the file
Hydraulics cannot be counted, indicating a lack of transport properties.
Master, it’s the material science subject from the file I sent you earlier. I chose the NRTL property equation. Could you help me take another look? Thank you
What consequences will that have? The tower diameter can be calculated sometimes, and not other times
So what should be done in such a situation? I don’t have the conditions to conduct experiments right now either
Without binary data, Aspen should use the ideal system by default; it has nothing to do with hydraulics, and calculations can still be performed
If an ideal system is assumed by default, what impact will it have on parameters such as the number of theoretical plates, the feed plate, and the heat load? For example, I currently have three substances: A, B, and C. I have the interaction parameters for AB and AC, but not for BC. If I conduct experiments to determine and fill in the binary interaction parameter for BC, do I only need to use the azeotropy data from the mixture of B and C, or do I also need to conduct experiments with the mixture of all three substances, A, B, and C?
It’s hard to say what the impact will be; it depends on the actual solution system. Systems like benzene-toluene can basically be considered ideal systems. If you can conduct experiments, it’s certainly best to collect data from 3 different sets, which would also allow for verification!