A Comparative Study of the Perturbed-Chain Statistical Associating Fluid Theory Equation of State and Activity Coefficient Models in Phase Equilibria Calculations for Mixtures Containing Associating and Polar Components

Vapor–liquid equilibria (VLE), liquid–liquid equilibria (LLE), and vapor–liquid–liquid equilibria (VLLE) for systems involving highly nonideal components, namely, water, alcohols, alkanes, ketones, aldehydes, esters, and ethers, were investigated to evaluate the perturbed-chain statistical associating fluid theory equation of state (PC-SAFT EOS) and two widely used activity coefficient models, that is, the universal quasichemical (UNIQUAC) and...