Batch Disillation
Batch Disillation
(OP)
I want to simulate batch distillation and estimate column sizing. but I don't have batchfrac(or batch distillation) license. I just have A+ and Aspen Dynamics license.
How can I do it?
How can I do it?





RE: Batch Disillation
RE: Batch Disillation
If you think of the continuous column as a snapshot of the batch column (enriching section only) then you could make some stepwise solutions for the batch distillation using varying feed compositions.
Change the feed composition based on a mass balance around the column after xx minutes.
Then flash the new liquid composition from the material balance and feed it to the column. I think if you keep repeating this process, assuming that the distillation changes stepwise instead of the true gradual change that you won't be that far off.
The time xx will be dependant on the size of the column and how fast the compositions are changing.
Maybe someone else will have a more elegant solution.
Goodluck
StoneCold
RE: Batch Disillation
RE: Batch Disillation
I have used this technique several times myself and it seems reasonable. just a thought- sshep