Abstract:
A ternary critical end line (T-CEL) is a line of Ternary critical end points (T-CEPs). T-CELs provide key information on the phase behavior of ternary systems, i.e., they are boundaries for the ternary three-phase equilibrium. A ternary system may have several T-CELs. It is desirable to have available a robust algorithm for computing complete ternary CELs, thus minimizing the need for user intervention. It is also important to reliably detect the key points where T-CELs originate or terminate. In this work, we propose to apply a numerical continuation method (NCM) for the fast and robust computation of T-CELs. We present calculated T-CELs for highly asymmetric systems showing the topologies that these lines define. We consider a model of the equation of state (EOS) type and use it over wide ranges of conditions. Such ranges are much wider than those previously considered in the literature. Our main conclusion is that models for the fluid phase equilibria of ternary systems may predict, for a given system, several T-CELs of varying types and topologies. Some of such topologies have been observed for the first time in this work. © 2014 Elsevier B.V. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | Critical end line topologies for ternary systems |
Autor: | Pisoni, G.; Cismondi, M.; Cardozo-Filho, L.; Zabaloy, M.S. |
Filiación: | Planta Piloto de Ingeniería Química, Universidad Nacional Del sur, CONICET, CC 717-8000 Bahía Blanca, Prov. Buenos Aires, Argentina IDTQ-Grupo Vinculado PLAPIQUI, CONICET, Argentina Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de Córdoba, Ciudad Universitaria, Av. Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina Departmento de Engenharia Quimica, Universidad Estadual de Maringá, 87020-900 Maringá, PR, Brazil
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Palabras clave: | Critical end lines; Equation of state; Ternary systems; Equations of state; Phase equilibria; Topology; Asymmetric system; Critical end lines; Critical end points; Equation of state; Fluid-phase equilibrium; Numerical continuation methods; Robust computation; Three-phase equilibria; Ternary systems |
Año: | 2014
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Volumen: | 89
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Página de inicio: | 33
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Página de fin: | 47
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DOI: |
http://dx.doi.org/10.1016/j.supflu.2014.01.014 |
Título revista: | Journal of Supercritical Fluids
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Título revista abreviado: | J. Supercritical Fluids
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ISSN: | 08968446
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CODEN: | JSFLE
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08968446_v89_n_p33_Pisoni |
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Citas:
---------- APA ----------
Pisoni, G., Cismondi, M., Cardozo-Filho, L. & Zabaloy, M.S.
(2014)
. Critical end line topologies for ternary systems. Journal of Supercritical Fluids, 89, 33-47.
http://dx.doi.org/10.1016/j.supflu.2014.01.014---------- CHICAGO ----------
Pisoni, G., Cismondi, M., Cardozo-Filho, L., Zabaloy, M.S.
"Critical end line topologies for ternary systems"
. Journal of Supercritical Fluids 89
(2014) : 33-47.
http://dx.doi.org/10.1016/j.supflu.2014.01.014---------- MLA ----------
Pisoni, G., Cismondi, M., Cardozo-Filho, L., Zabaloy, M.S.
"Critical end line topologies for ternary systems"
. Journal of Supercritical Fluids, vol. 89, 2014, pp. 33-47.
http://dx.doi.org/10.1016/j.supflu.2014.01.014---------- VANCOUVER ----------
Pisoni, G., Cismondi, M., Cardozo-Filho, L., Zabaloy, M.S. Critical end line topologies for ternary systems. J. Supercritical Fluids. 2014;89:33-47.
http://dx.doi.org/10.1016/j.supflu.2014.01.014