Equations of state for the calculation of fluid‐phase equilibria

Abstract

Progress in de®eloping equations of state for the calculation of fluid-phase equilibria is re®iewed. There are many alternati®e equations of state capable of calculating the phase equilibria of a di®erse range of fluids. A wide range of equations of state from cubic equations for simple molecules to theoretically-based equations for molecular chains is considered. An o®er®iew is also gi®en of work on mixing rules that are used to apply equations of state to mixtures. Historically, the de®elopment of equations of state has been largely empirical. Howe®er, equations of state are being formulated increasingly with the benefit of greater theoretical insights. It is now quite common to use molecular simulation data to test the theoretical basis of equations of state. Many of these theoretically-based equations are capable of pro®iding reliable calculations, particularly for large molecules.

Joseph Neng Shun Kwong: a famous and obscure scientist

“…A recent review on the progress on developing equations of state still consider the expression as perhaps, the most important model for the modification for the van der Waals equation of state. 12 It also emphasizes the accurateness and easiness of its representation of volumetric properties, the requirement of the fewest number of properties (critical pressure and temperature, and acentric factor) for the calculation of the generalized parameters a and b, and the little computer time required for obtain good results as its main advantages. Other works present the Soave's modification 13 to the original equation as a still very useful predictive model for the vapor-liquid equilibrium calculations, mainly for non-polar compounds.…”

Extended Noble–Abel Stiffened-Gas Equation of State for Sub-and-Supercritical Liquid-Gas Systems Far from the Critical Point

“…The van der Waals (VdW) [29] and Soave-Redlich-Kwong (SRK) [30] are used in this work. Detailed reviews of cubic equations of state can be found in Wei and Sadus [31], for instance.…”

A Survey of Equations of State for Polymers

“…Four comprehensive reviews of the development and application of the various types of SAFT have appeared recently [1], [2], [105], [109].…”

“…A detailed review of the different lines of developing equations of state for the calculation of fluid phase equilibria is given by [1]. Recently [2] presented and discussed in depth both classical and novel thermodynamic models, which have been developed and can potentially be used for industrial applications.…”