The issue with the binary interaction parameter
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Hello everyone, I encountered a situation during simulation where for two certain components, there are no binary interaction parameters available in Aspen, and I couldn’t find any data on gas-liquid equilibrium for them. What should I do? Thank you
The UNIFAC group contribution method is used first to predict the binary interaction parameters needed for the regression
Then the UNIFAC group contribution method can only be used, but it’s generally not allowed; I’ve heard it can be corrected, but I don’t know how.
These data are generally very difficult to obtain; you can first make a prediction using the UNIFAC group contribution method, and then regress to obtain the binary interaction parameters you need. If you have the actual operational data of the equipment as well as the material balance data, you can try to make corrections on your own to bring the simulation results as close as possible to the reality.
1# Dahuo durian: This is actually a common issue; the parameters in this software may not be correct, or there could be differences between the various systems being used. The best and most practical approach is to conduct experiments and use the experimental data for regression analysis
You can use known experimental data for regression by yourself!
There are already relevant topics on the forum; please make use of the “search” function, OP.