Why doesn’t the circulator iterate over component problems?
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Where can I set the tolerance so that the components are also iterated accurately?
What’s the purpose? Faster convergence? There may not be that much freedom.
The goal is to prevent the loss of components. This here is the reboiler at the bottom of the tower; only a small amount of fluid is drawn from the tower bottom and sent to the next tower, while the circulation volume in the reboiler is high, which can easily disrupt the composition of the fluid stream and the operation of the next tower
After the process was set up, the data was modified in the upstream logistics section; as a result, the towers downstream kept experiencing consistency errors in the calculation values of certain intermediate boiling streams within those towers. Sometimes it was the molar entropy, and other times it was the enthalpy value. No solution could be found in the advanced calculation options, and increasing the various tolerances also didn’t help. I’ve encountered issues before where the temperatures were inconsistent; deleting and adding them again still caused problems, but making drastic changes and then reverting them solved it. For the problems related to tower calculations, changing the solution method from the modified HIO to HIO can also resolve this consistency error issue, but the convergence rate is too low. Choose the modified HIO to continue with the calculations; when consistency errors occur, keep clicking to start the solver over and over, and eventually convergence is achieved, but this isn’t a good solution – sometimes it takes half a day or more. I would appreciate it if experts could advise me on how to set this up to resolve the issue. Thank you.