Amine Sweetening - ProMax
Amine Sweetening - ProMax
(OP)
Dear Friends,
I am currently doing a simulation on CO2 removal unit using ProMax program. I have some issues in simulating my stripper column.
I have simulated the absorber column, but when it goes to stripper column it's unsolved
below is the message I got from ProMax:
ProMax:ProMax!Project!Flowsheets!Flowsheet1!Blocks!DTWR-101
Error: The outer loop failed due to an error in the Kb parameters
Failed blocks:
ProMax:ProMax!Project!Flowsheets!Flowsheet1!Blocks!DTWR-101
I tried to go though the model but I have got the clue to it. Could anyone help me out with this problem?
Regards,
Mitu
I am currently doing a simulation on CO2 removal unit using ProMax program. I have some issues in simulating my stripper column.
I have simulated the absorber column, but when it goes to stripper column it's unsolved
below is the message I got from ProMax:
ProMax:ProMax!Project!Flowsheets!Flowsheet1!Blocks!DTWR-101
Error: The outer loop failed due to an error in the Kb parameters
Failed blocks:
ProMax:ProMax!Project!Flowsheets!Flowsheet1!Blocks!DTWR-101
I tried to go though the model but I have got the clue to it. Could anyone help me out with this problem?
Regards,
Mitu





RE: Amine Sweetening - ProMax
RE: Amine Sweetening - ProMax
If you believe that your inputs are correct, the column pressure, reboiler duty, rich amine quality, etc. are good, then try changing convergence methods. Switch from Boston-Sullivan to Composition-Dependent. See if that helps.
Ammonia accumulation in the regenerator can also cause convergence issues.
If all else fails, as maddocks said, contact BR&E support.
RE: Amine Sweetening - ProMax
Cheers,
RE: Amine Sweetening - ProMax
can anyone advice me how to match the mid bed temperature on the absorber.
currently on my simulation I have, the temperature profile for the absorber doesn't look really match with what I require.
I have attached the Temp. profile, I want to move up the temp. of 60 deg C to the middle stage (between stage 6 and 7) of the absorber. I tried to ply around with the variables on the simulation but, I haven't got any good profile for this.
Could you please give me some clues to adjust the temp. of the absorber? Thanks.
Regards
RE: Amine Sweetening - ProMax