I pointed out in my original message that what i wrote are deltas, or maybe better known as relative errors (|Xexp-Xcalc|)/Xexp*100) so they don't quite sum to 100%.
Data:
Paraffins [mol%] 75,Naphthas [mol%] 2.9, Olefins [mol%] 1.1 Aromatics [mol%] 21
Hysys:
Paraffins [mol%] 66.9177,Naphthas...
Eppoises,
Data are OK. I also agree that deriving data from density and D86 only cannot be very accurate, and that is exactly what I was asking: what else shall I put when defining a stream in order to obtain better results?
I tried to predict RVP, RON and P/N/A of heavy and light platformate with Hysys using ASTM distillation and density @ 15C, but got pretty bad results, i.e. bad match with experimental data.
What I did:
took PR from fluid packages, entered oil environment, defined my steam by its standard...
