Equation-of-state methods for computing phase equilibria and enthalpies

A review of the available methods for computing liquid/vapor phase equilibria for enthalpy deviations via equations of state includes information on the interaction parameters for over 140 binary mixtures, as well as an extension of the Lee-Kesler equation of state that permits the more accurate calculation of important thermodynamic data for mixtures. Understanding the processes in a gas-purification separation unit requires a knowledge of phase equilibria and, because heat is added and removed in such processes, of the enthalpy of the mixtures. The survey devotes the most detail to those cases describing the behavior of a mixture for a wide temperature and pressure range - that is, in both gaseous and liquid states - by a single equation of state.