Hi,
I am trying to set up a COFE simulation for a divided wall distillation column, like the BTX example http://www.chemsep.org/downloads/data/B ... 8p6034.fsd , which solves without problems.
When specifying the first column (as simple absorber/stripper) chemsep checks everything green except results, however when closing the chemsep window i get the message "problem specification is incomplete"
When using "Check" in chemsep i get the messages: Column needs a feed to stage 1 and it should be a liquid, followed by column needs a feed to stage 1 and it should be a [p]
Even a simple absorber with two feeds gives the same message/error
How to resolve this?
Edwin
cofe-chemsep absorber
Moderator: jasper
Re: cofe-chemsep absorber
Edwin
please check first whether the pre-column has a valid liquid feed to the top and valid vapor feed to the bottom to start out with.
Then check whether the vapor fraction that ChemSep receives are correct for a liquid feed (vapor fraction 0) and a vapor feed (vapor fraction 1).
Then check whether you have set the vapor feed to the bottom as "Split-below" and the top liquid feed as "split".
You should then not get the warning you encounter.
If this doesn't work please post your flowsheet.
Harry
please check first whether the pre-column has a valid liquid feed to the top and valid vapor feed to the bottom to start out with.
Then check whether the vapor fraction that ChemSep receives are correct for a liquid feed (vapor fraction 0) and a vapor feed (vapor fraction 1).
Then check whether you have set the vapor feed to the bottom as "Split-below" and the top liquid feed as "split".
You should then not get the warning you encounter.
If this doesn't work please post your flowsheet.
Harry