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Representación Simultánea del Equilibrio Líquido-Vapor, el Volumen Molar y la Entalpía de Exceso de Mezclas Complejas mediante una Ecuación de Estado tipo Peng-Robinson.
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- Additional Information
- Alternate Title:
Simultaneous Representation of Liquid-Vapor Equilibria, Molar Volume and Excess Enthalpy of Complex Mixtures by a Peng- Robinson-type Equation of State.
- Subject Terms:
- Abstract:
Una ecuación de estado generalizada tipo Peng-Robinson con las reglas de mezclado de Huron-Vidal se emplea para correlacionar simultáneamente el equilibrio liquido-vapor, el volumen molar y las entalpías de exceso de mezclas polares y no polares. Se usa el concepto de series homólogas para desarrollar expresiones generalizadas que permitan representar las propiedades termodinámicas de una mezcla a partir de parámetros de las sustancias puras que la conforman. Se analizan las siguientes series homólogas: etanol+n-alcanos, butanol+n-alcanos, 2-metoxi-2-metilbutano+n-alcanos, dimetil carbonato+n-alcanos, 2- metoxi-2-metilbutano+n-alcoholes y dimetil carbonato+n-alcoholes. Expresiones generalizadas en términos de la razón entre la temperatura crítica y la presión crítica de los componentes de la serie homologa, fueron desarrolladas para obtener los parámetros de interacción binaria de una mezcla. En general, los resultados son aceptables e ilustran la capacidad del modelo termodinámico empleado para representar las tres propiedades de forma simultánea. [ABSTRACT FROM AUTHOR]
- Abstract:
A generalized Peng -Robinson equation of state with the Huron-Vidal mixing rules is selected to correlate vapor-liquid equilibrium, molar volume and excess enthalpy of polar and non-polar mixtures. The concept of homologous series is used to develop generalized expressions that can be used to describe the thermodynamic properties of a binary mixture from parameters of the pure substances. The homologous series analyzed are: ethanol+n-alkanes, butanol+n-alkanes, 2-methoxy-2-methylbutane+n-alkanes, dimethyl carbonate+n-alkanes, 2-methoxy-2-methylbutane+n-alcohols and dimethyl carbonate+n-alcohols. Generalized expressions to obtain the binary interaction parameters of a mixture were developed as a function of the ratio between the critical temperature and the critical pressure of the compounds in the homologous series. In general, results are acceptable and show the ability of the thermodynamic model to represent the three properties simultaneously. [ABSTRACT FROM AUTHOR]
- Abstract:
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