A combined soave-redlich-kwong and NRTL equation for calculating the distribution of methanol between water and hydrocarbon phases

Ternary Vapor–Liquid Equilibrium Measurements and Modeling of Ethylene Glycol (1) + Water (2) + Methane (3) Systems at 6 and 12.5 MPa

“…An upgraded version of the Soave–Redlich–Kwong (SRK) equation incorporates an excess Gibbs energy mixing rule developed by Huron and Vidal, often referred to as SRK-HV. Several relevant systems have been modeled using SRK-HV, ,, and it has been incorporated in several modeling packages, e.g. Aspen Plus and PVTsim.…”

Can a Cubic Equation of State Model Bitumen–Solvent Phase Behavior?

“…The first asymmetric mixing rules proposed were empirically developed compositional dependent expressions for the binary interaction parameters ( k ij ) used in the symmetric van der Waals mixing rules. − Another class of asymmetric mixing rules are derived by equating the excess free energy (either Gibbs or Helmholtz) from an EoS to the excess free energy from an activity coefficient model. The Huron–Vidal and Wong–Sandler mixing rules are well-known examples of excess energy mixing rules. , The Huron–Vidal asymmetric mixing rules are theoretically applicable to mixtures of nonpolar and polar compounds and have been used to model mixtures of water and hydrocarbons. − Gregorowicz and de Loos used the Wong–Sandler mixing rules to model LLV behavior in asymmetric hydrocarbon mixtures. To date, a CEoS with asymmetric mixing rules has not been applied to mixtures of bitumen and solvents.…”

A comparative performance evaluation of cubic equations of state for predicting the compositional distribution of hydrate inhibitors in reservoir fluid systems

“…This section describes the various steps involved in the ranking of the selected EoS used in this work; the selected EoS being the CPA-Infochem EoS, PR-HV, RKS-HV and PSRK EoS. Firstly, several experimental solubility and phase equilibria datasets of systems containing real reservoir fluids, water and gas hydrate inhibitors (MEG and methanol), and their pure component properties (Table 1) were gathered from multiple published data (Kristensen et al, 1993;Pedersen et al, 1996;2014;Dandekar et al, 2005;Haghighi, 2009;Frost et al, 2014). Although several other studies exist, which have experimentally studied the mutual solubility of MEG and methanol in hydrocarbons and water, these studies were not included, as our aim was to ensure the application of actual reservoir fluids obtained from the wellbores of industrial operators around the world.…”