Application of the CPA equation of state to glycol/hydrocarbons liquid-liquid equilibria

作者: Samer O. Derawi , Michael L. Michelsen , Georgios M. Kontogeorgis , Erling H. Stenby

DOI: 10.1016/S0378-3812(03)00056-6

关键词: ThermodynamicsFlory–Huggins solution theoryThermodynamic modelPhase (matter)Work (thermodynamics)Binary systemLiquid liquidEquation of stateChemistryEstimation theory

摘要: Abstract The Cubic Plus Association (CPA) equation of state is a thermodynamic model, which combines the well-known cubic SRK (Soave–Redlich–Kwong) and association term proposed by Wertheim, typically employed in models like SAFT (statistical associating fluid theory). CPA has been shown past to be successful model for phase equilibria calculations systems containing water, hydrocarbons alcohols. In this work, applied first time liquid–liquid (LLE) glycols hydrocarbons. It that excellent correlation achieved with solely single interaction parameter per binary system. procedure as well nature experimental data play crucial role estimation they are thus extensively discussed.

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