Prediction of phase equilibria, density, speed of sound and viscosity of 2-alkoxyethanols mixtures: A comparison study between SAFT type EoSs and a modified PR EoS

Generalization Comparison Study of the Performance of Six Different Alpha Functions Coupled to a Peng–Robinson Equation of State

“…In recent years, the Heyen alpha function has been generalized based on the acentric factor 31 and polar Halm−Stiel factor, 32 whose purpose is to improve the description and deviation of the thermodynamic properties estimation of polar, highly polar, or SA substances. Forero and co-workers 11,12,27 have demonstrated that incorporating the Halm−Stiel polar factor significantly helps reduce the absolute deviation of polar substances, going from a deviation of 6.17% for PR EoS to 0.75% for the generalization of the Heyen coupled with the PR EoS. 27 This work aims to generalize the parameters of any alpha function based on the first, second, and third derivatives in terms of the acentric and the Halm−Stiel polar factors to be used to describe and model substances, especially polar compounds.…”

“…4,5 Additionally, cubic EoSs can be used with different theories to correlate other properties, like viscosity, 6,7 thermal conductivity, 8,9 surface tension, 10 or speed of sound. 9,11 In terms of practical applications, cubic EoS coupled with some classical simple van der Waals mixing rules or the so-called EoS/G E mixing rules can model nonself-associating (NSA) and self-associating (SA) mixtures of vapor−liquid, liquid−liquid, vapor−liquid− liquid equilibria calculations. 1,12 The capabilities of cubic EoSs to correlate the phase equilibrium of mixtures depend on the choice of appropriate mixing rules and the temperature-dependent function of the attractive term for the pure components, called the alpha function.…”

“…Cubic equations of state (EoS) are widely used in industrial applications, including separation, oil and gas industry, and supercritical extraction, due to their simplicity and accuracy in representing the thermodynamic properties of pure compounds and their mixtures. − Moreover, these equations are currently used in process flowsheet simulators applied in research, optimization, and equipment design in which thermodynamic properties are required. , Additionally, cubic EoSs can be used with different theories to correlate other properties, like viscosity, , thermal conductivity, , surface tension, or speed of sound. , In terms of practical applications, cubic EoS coupled with some classical simple van der Waals mixing rules or the so-called EoS/G E mixing rules can model nonself-associating (NSA) and self-associating (SA) mixtures of vapor–liquid, liquid–liquid, vapor–liquid–liquid equilibria calculations. , …”

“…In recent years, the Heyen alpha function has been generalized based on the acentric factor and polar Halm–Stiel factor, whose purpose is to improve the description and deviation of the thermodynamic properties estimation of polar, highly polar, or SA substances. Forero and co-workers ,, have demonstrated that incorporating the Halm–Stiel polar factor significantly helps reduce the absolute deviation of polar substances, going from a deviation of 6.17% for PR EoS to 0.75% for the generalization of the Heyen coupled with the PR EoS …”

Thermodynamic Behavior of (2-Propanol + 1,8-Cineole) Mixtures: Isothermal Vapor–Liquid Equilibria, Densities, Enthalpies of Mixing, and Modeling

“…Thus, for our intermediate system, it is interesting to compare the results of this particular SAFT molecular association model with those of the Van der Waals Modified Cubic EoS PRM, and PRSV previously mentioned. A number of user-friendly reviews on the derivation and applications of the SAFT model and the cubic EoS can be found in the literature [ 39 , 52 , 53 , 54 , 55 , 56 , 57 ].…”