When I used the shortcut model, the reflux ratio I calculated was -1
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I don’t know what the reason is?
Please explain the details carefully; the way you put it leaves those who want to help answer confused
I’ve encountered the same problem as well. Use a distillation column for simulation, and examine the series of reflux amounts shown in the simulation results using CASE STUDY to see if there are any negative values. I saw negative values in my case, which suggests that the reflux amount is indeed very low. I hope this helps.
When performing simulation calculations for a distillation column, since I didn’t know how many theoretical plates were required, I first used a shortcut model to estimate the number of theoretical plates, while specifying the process requirements for the top and bottom of the column. The calculated reflux ratio is -1; I’m not sure if this makes it clear enough
Please upload the relevant simulation files so that a specific analysis can be conducted. I think the issue lies in the incorrect input of raw material components and product requirements; it’s hard to say anything without specific data.