Calculation of the interfacial tension in multicomponent liquid-vapor systems by the density gradient theory
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad de Carabobo
2016
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| _version_ | 1876480668286844928 |
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| author | Damelys Zabala |
| author_facet | Damelys Zabala |
| contents | Calculation of the interfacial tension in multicomponent liquid-vapor systems by the density gradient theory Damelys Zabala Aurélie Wender Ingeniería gradient theory Interfacial tension multicomponent mixtures A good knowledge of interfacial properties is required in many applications of the oil and gas industry, where multiphase flows are encountered like in the acid gases injection and Enhanced Oil Recovery operations. The density gradient theory, combined with the Peng-Robinson equation of state, was used to estimate the interfacial tension for binary and ternary mixtures in liquid-vapor systems, avoiding the use of experimental techniques, with maximum deviation of 15% for values above 1 mN=m. The new criterion of using the equilibrium K values for selecting the reference component, instead the surface tension of the pure component, has been successfully tested. We have performed calculations of systems composed by carbon dioxide and hydrocarbons. The calculated interface thickness increases as the system equilibrium pressure increases. It is proposed to evaluate other liquidvapor systems and other equations of state. Also, the study could be extended to liquid-liquid systems. 2016 artículo científico 1316-6832 https://www.redalyc.org/articulo.oa?id=70748810002 en http://www.redalyc.org/revista.oa?id=707 Revista INGENIERÍA UC application/pdf Universidad de Carabobo Revista INGENIERÍA UC (República Bolivariana de Venezuela) Num.3 Vol.23 |
| format | Artículo científico |
| id | redalyc_70748810002 |
| institution | Redalyc |
| language | en |
| publishDate | 2016 |
| publisher | Universidad de Carabobo |
| spellingShingle | Calculation of the interfacial tension in multicomponent liquid-vapor systems by the density gradient theory Damelys Zabala Ingeniería gradient theory Interfacial tension multicomponent mixtures Calculation of the interfacial tension in multicomponent liquid-vapor systems by the density gradient theory Damelys Zabala Aurélie Wender Ingeniería gradient theory Interfacial tension multicomponent mixtures A good knowledge of interfacial properties is required in many applications of the oil and gas industry, where multiphase flows are encountered like in the acid gases injection and Enhanced Oil Recovery operations. The density gradient theory, combined with the Peng-Robinson equation of state, was used to estimate the interfacial tension for binary and ternary mixtures in liquid-vapor systems, avoiding the use of experimental techniques, with maximum deviation of 15% for values above 1 mN=m. The new criterion of using the equilibrium K values for selecting the reference component, instead the surface tension of the pure component, has been successfully tested. We have performed calculations of systems composed by carbon dioxide and hydrocarbons. The calculated interface thickness increases as the system equilibrium pressure increases. It is proposed to evaluate other liquidvapor systems and other equations of state. Also, the study could be extended to liquid-liquid systems. 2016 artículo científico 1316-6832 https://www.redalyc.org/articulo.oa?id=70748810002 en http://www.redalyc.org/revista.oa?id=707 Revista INGENIERÍA UC application/pdf Universidad de Carabobo Revista INGENIERÍA UC (República Bolivariana de Venezuela) Num.3 Vol.23 |
| title | Calculation of the interfacial tension in multicomponent liquid-vapor systems by the density gradient theory |
| topic | Ingeniería gradient theory Interfacial tension multicomponent mixtures |
| url | https://www.redalyc.org/articulo.oa?id=70748810002 |