Calculation of multi-phase equilibria using the equal area rule with application to mixtures

Autor:	P. T. Eubank, Kenneth R. Hall, Guor-Shiarn Shyu, Nishawn S. M. Hanif
Rok vydání:	1996
Předmět:	Activity coefficient Equation of state Chemistry General Chemical Engineering General Physics and Astronomy Binary number Thermodynamics Derivative Gibbs free energy symbols.namesake Phase (matter) symbols Applied mathematics Physical and Theoretical Chemistry Ternary operation Mixing (physics)
Zdroj:	Fluid Phase Equilibria. 126:53-70
ISSN:	0378-3812
Popis:	We have used an efficient, new Gibbs minimization method with an equation of state (EOS) model to predict phase equilibria for hydrocarbon water binary mixtures. The method utilizes the observation by Eubank and Hall (1995) that a plot of the derivative of the Gibbs energy of mixing against composition exhibits phase loops similar to those associated with the Maxwell rule. Equilibrium exists when the positive and negative areas are equal above and below a specific value of the derivative. Hence, we call the method the Equal Area Rule (EAR). The EAR application procedure automatically performs a stability analysis for the system. EAR also presents exciting possibilities when calculating phase equilibria for multi-component mixtures. Shyu et al. (1995) have applied the method to ternary liquid-phase systems using activity coefficient models.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f68a540df78e2035095cea05290ca1a https://doi.org/10.1016/s0378-3812(96)03141-x Zobrazit plný text záznamu Full Text from ScienceDirect