RROR: exception raised on file RigorousColumn.vb, method Calculate, line...

Simulate chemical processes using advanced thermodynamic models

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RROR: exception raised on file RigorousColumn.vb, method Calculate, line 3727: Solver reached the maximum number of iterations without converging.

Forum: Windows Platform (New UI)

Created: 2023-03-19

Updated: 2023-03-20

Poppy - 2023-03-19

Hello,

Hello!

So, I'm trying to simulate a Acrylic Acid production process and I'm stuck with the extraction. I get the error message: ERROR: exception raised on file RigorousColumn.vb, method Calculate, line 3727: Solver reached the maximum number of iterations without converging.
I've no idea why it keeps throwing errors. I changed the package countless times from UNIQUAC to NRTL to Peng-Robinson. Nothing helps. Played around with inlet stages, outlet stages, and still nothing. Any ideas on why this might be happening and how to come around this? Thank you.
P.S: I attached my simulation file here.

Partial Oxidation of Propylene for the Production of Acrylic Acid.dwxmz

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Daniel Medeiros - 2023-03-19

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Poppy - 2023-03-20

Hi, Daniel.

Can you attach the corrected version? This outlet temperature is different from what I have on there.

Thank you!

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- Daniel Medeiros - 2023-03-20
  
  actually that was the temperature in the file you sent me. what is the correct one?
  
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Poppy - 2023-03-20

The temperature change was -288 but the outlet temperature was 45

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