Flash separation

Discusses use of COCO, the process simulation and modelling software suite from AmsterCHEM, downloadable from http://www.cocosimulator.org

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Flash separation

Postby thubelihle » 19 April 2022, 19:39

Hi;
Was wondering, if l have a feed composition, temperature and pressure, how do l flash this mixture to validate that the model l chose is the right one? And what will be the expected output parameters to validate the thermodynamics model? Kind regards
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Re: Flash separation

Postby jasper » 20 April 2022, 05:06

In COCO you can just enter these data into a stream, and it will flash automatically. You will have to add a dummy feed rate as well, e.g. 1.
If you have other data, such P, H, composition, enter a dummy T, and then click on overall H to change it. All black numbers can be entered, gray numbers are output only.
Alternatively, use the calculator.
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Re: Flash separation

Postby thubelihle » 20 April 2022, 07:44

Thanks Jasper for the reply. Using your experience what indicates normality and abnormality when flashing a stream? Kind regards.
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Re: Flash separation

Postby jasper » 20 April 2022, 17:34

I am not clear on the question. All T,P,composition flashes have a unique solution. If it solves, the only possible abnormality is that the phases are not stable, that is, not all phases are found.
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