Maša

Hi Daniel, Thank you very much for your help. I managed to change the parameters and successfully separate the components in the extraction column.

Thanks @danwbr for answering, and sorry for the long question since I'm a novice in using DWSIM! I'm currently confused about how to set up initial estimates to solve the problem. Looking at an example of LLE that is working (one from the sample examples), I see that initial estimates are set to some values, but I don't understand how they were determined. My guess is that if I set proper estimates in my simulation, it would manage to converge. In the default working example, the result for the vapor...

Hello everyone, I am currently working on a simulation in DWSIM involving an extraction column where I am using N-methyl-2-pyrrolidone (NMP) as a solvent to extract components from a C7+ oil bulk mixture. However, I am facing significant convergence issues, and I am looking for advice or solutions from those who might have experience with similar setups. Despite setting reasonable initial estimates, the column simulation fails to converge. Adjustments to flow rates and compositions do not seem to...

Hello everyone, I am currently working on a simulation in DWSIM involving an extraction column where I am using N-methyl-2-pyrrolidone (NMP) as a solvent to extract components from a C7+ oil bulk mixture. However, I am facing significant convergence issues, and I am looking for advice or solutions from those who might have experience with similar setups. Despite setting reasonable initial estimates, the column simulation fails to converge. Adjustments to flow rates and compositions do not seem to...

Hello, I am working on simulating a plant whose parameters were provided by the university, except for the solvent extraction column. I need to determine its parameters. I have tried everything, but I always encounter an error: Error in ABS-1: Phase equilibria calculation error. Can anyone help me understand what the error might be? I am attaching the flowsheet of the simulation. Thank you in advance.

Hello, I am working on simulating a plant whose parameters were provided by the university, except for the solvent extraction column. I need to determine its parameters. I have tried everything, but I always encounter an error: Error in ABS-1: Phase equilibria calculation error. Can anyone help me understand what the error might be? I am attaching the flowsheet of the simulation. Thank you in advance.