2 replies to this topic

[titim]

Hi everyone i have 2 questions in Aspen hysys:

 

1-  i get this message when i switch from SS to dynamic in hysys " petroleum assays not supported in dynamics" . Can anyone give an explanation of this message.

 

2- in SS i dont get vapor in the bottom of the drum, but when i switch to dynamic it show me '' vapor in liquide??.

 

best regards 

 

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[Alfreedo]

Hi.  Did you figure this out?  I am also getting the petroleum assay message.  I'm not sure why because as I understand it, you can put a crude atmospheric tower into dyanmics mode - surely the simulation is racked with hypothetical components created from assays.  Is the message in reference to the petroleum arrays from the libraries?   Do you have this problem if you install a blend into a stream?

 

[SilverShaded]

Could be because Hysys is really two different simulators under the same hood.  The newer refsys petroleum assay style streams are incompatible with older Hysys style streams.