Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations
Stijepović, Mirko Z.
Ivanis, Gorica R.
Radović, Ivona R.
Article (Published version)
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SAFT equations of state have been widely used for the determination of different thermo-physical and phase equilibria properties. In order to use these equations as predictive models it is necessary to calculate the model parameters. In this work CK-SAFT and PC-SAFT equations of state were applied for the correlation of pure compounds densities in the wide ranges of temperature and pressure (288.15-413.15 K and 0.1-60 MPa, respectively). The calculations of densities for n-hexane, n-heptane, n-octane, toluene, dichloromethane and ethanol, under high pressure conditions, were performed with the new sets of parameters determined in this paper by CK-SAFT and PC-SAFT. Very good agreement between experimental and calculated density values was achieved, having absolute average percentage deviations lower than 0.5 %.
Keywords:density / modelling / non-associative compounds / SAFT / CK-SAFT / PC-SAFT
Source:Journal of the Serbian Chemical Society, 2018, 83, 3, 331-343
- Serbian Chemical Society