2 replies to this topic

[BABU]

any ideas on how to use HYSIS or PRO II to estimate volume of gas (SCF) of a barrel of liquid natural gas (NG) condensate. Composition of natural gas condensate is known for example as given below. NG condensate flows under a pressure of 700 psig and 30 C.
C1=4.6%
C2=14.2%
C3=28.6%
iC4=9.5%
nC4=28.4
iC5=8.2%
nC5=4.5%
C6=1.8%
C7=0%
CO2=0.1%
H2S=0.1%
= 100%

thanks
Babu

[djack77494]

This is NOT a matter of simply plugging in the correct conversion factor and off you go. Hysys or ProII are able to use their built-in correlations to estimate standard liquid volumes (barrels) of a liquid hydrocarbon. Essentially, they are estimating the liquid density. There is no connection between the liquid density and the gas phase density. Once you have the gas phase composition (as you have here), you can estimate the SCF knowing that your temperature is 60F (520R) and your pressure is 14.7 psia and your molecular weight is readily calculated by sum of mole fractions * MW of individual components. Then apply V = (m/M * R * T) /P. The resulting V will be in unit of SCF.

[vicini]

hysys doesn't have anything special to do the conversions. You can use the same thing they do, the GPSA data book has a listing of the compounds they have compiled from NIST on the conversion of cubic feet of gas per gallon.

Quit using programs to do what you can do by hand.