Thermodynamic consistency of vapor-liquid equilibrium data at high pressure

✍ Scribed by Alberto Bertucco; Massimiliano Barolo; Nicola Elvassore

• Publisher: American Institute of Chemical Engineers
• Year: 1997
• Tongue: English
• Weight: 638 KB
• Volume: 43
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690430227

✦ Synopsis

A method for testing the thermodynamic consistency of binaiy and isothemal vapor-liquid equilibrium data at moderate and high pressures is proposed, using a 9-4p approach. The Redlich-Kwong-Soave equation of state with Huron-Kdal mixing rules at infinite pressure is used in the data-reduction procedure, and a Margules equation is used to calculate the activity coeficients at infinite pressure. This model is shown to be thermodynamically consistent. The proposed method allows us to check consistency of vapor-liquid equilibrium data in the presence of components at the gaseous and supercritical states.