Selection of physical property model in Aspen
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The problem I calculated involved hydroiodic acid (HI) and water. The solution after mixing these two substances is highly non-ideal and will have a maximum constant boiling point. Which physical property model should be chosen in Aspen simulation? Thanks.
Select the NRTL model, search the literature for binary parameters, or use aspen split for azeotrope search.
You can take a look at the user manual.
In this case, you must use literature values or experimental values, because Aspen does not provide special physical property parameters for HI, similar to NRTL-HF, which is a special physical property parameter for HF, and is of course the result of basic research done by predecessors. I think there must be similar research on HI in the literature. You can use literature data and bring it into Properties for calculation.
I have just learned Aspen and have little experience. I would like to ask an expert to explain it in more detail. How to import the physical property parameters of HI in the literature into the Aspen database? Thank you so much.