Representation of phase equilibria and densities for complex systems using a van der waals volume translated equation of state with a unifac mixing rule

This work investigated the applicability of the van der Waals cubic equation of state (EoS) with volume translation (vdWt), using the modified Huron-Vidal (MHV2) mixing rule with the UNIFAC (UNIQUAC Functional Activity Coefficients) model for describing phase equi-librium and density data for a series of complex systems over wide ranges of temperature (T) and pressure (P). Some limitations were identified in the prediction of the experimental data collected, e.g., systems with highly associating components, but in general, the EoS vdWt+MHV was able to satisfactorily represent both phase equilibrium and volumetric behavior.

• Autores: Chiavone-Filho, Osvaldo; Terron, Luiz Roberto; Foletto, Edson Luiz
• Tipo de recurso: Article of journal
• Fecha de publicación: 2014
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/52564
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/52564; http://bdigital.unal.edu.co/46920/
• Palabra clave: equilibrio de fases; ecuación de estado; regla de mezcla; traslación en volumen; UNIFAC; Chemical Engineering; Chemical Thermodynamics; Phase equilibrium; equation of state; mixing rule; volume translation; UNIFAC
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional