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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional de Colombia
2015
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=64340413006 |
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| _version_ | 1866586371175481344 |
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| author | L. Estupiñan |
| author_facet | L. Estupiñan |
| contents | Conceptual analysis of single-feed heterogeneous distillation columns L. Estupiñan C. A. M. Riascos Ingeniería VLL equilibrium operation leaves pinch point curves conceptual analysis heterogeneous azeotropic distillation Separation in heterogeneous distillation columns is attained by interaction of two liquid and one vapor phases, interaction of three phases involves complexities due to the determination of vapor-liquid-liquid equilibrium and hence, in the design of separation units. Nevertheless, the liquid-liquid equilibrium allows developing separations that may be unfeasible by vapor-liquid equilibrium. In this way, heterogeneous azeotropic distillation is a useful operation for the separation of azeotropic and close-boiling mixtures. In this work, a new methodology for evaluating the feasibility of this process is developed. This methodology is an extension of that propo - sed by Castillo et al . (1998) for homogeneous systems. Operation leaves for heterogeneous systems are calculated using the concept of pinch point curves in order to establish the process feasibility. Heterogeneous columns with external decanter are considered as the only heterogeneous stage (OHED: only heterogeneous external decanter). The initialization process for the column calculation requires the selection of the distillate composition using thermodynamic criteria in order to guarantee homogeneous phases within the column. A system with industrial and academic relevance was considered as case study: water-acetic acid-amyl acetate. Results show that the developed shortcut method allows evaluating process feasibility and estimating design parameters, without the use of trial and error procedures implemented, with the aid of simulation tools. 2015 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64340413006 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.35 |
| format | Artículo científico |
| id | redalyc_64340413006 |
| language | en |
| publishDate | 2015 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Conceptual analysis of single-feed heterogeneous distillation columns L. Estupiñan Ingeniería VLL equilibrium operation leaves pinch point curves conceptual analysis heterogeneous azeotropic distillation Conceptual analysis of single-feed heterogeneous distillation columns L. Estupiñan C. A. M. Riascos Ingeniería VLL equilibrium operation leaves pinch point curves conceptual analysis heterogeneous azeotropic distillation Separation in heterogeneous distillation columns is attained by interaction of two liquid and one vapor phases, interaction of three phases involves complexities due to the determination of vapor-liquid-liquid equilibrium and hence, in the design of separation units. Nevertheless, the liquid-liquid equilibrium allows developing separations that may be unfeasible by vapor-liquid equilibrium. In this way, heterogeneous azeotropic distillation is a useful operation for the separation of azeotropic and close-boiling mixtures. In this work, a new methodology for evaluating the feasibility of this process is developed. This methodology is an extension of that propo - sed by Castillo et al . (1998) for homogeneous systems. Operation leaves for heterogeneous systems are calculated using the concept of pinch point curves in order to establish the process feasibility. Heterogeneous columns with external decanter are considered as the only heterogeneous stage (OHED: only heterogeneous external decanter). The initialization process for the column calculation requires the selection of the distillate composition using thermodynamic criteria in order to guarantee homogeneous phases within the column. A system with industrial and academic relevance was considered as case study: water-acetic acid-amyl acetate. Results show that the developed shortcut method allows evaluating process feasibility and estimating design parameters, without the use of trial and error procedures implemented, with the aid of simulation tools. 2015 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64340413006 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.35 |
| title | Conceptual analysis of single-feed heterogeneous distillation columns |
| topic | Ingeniería VLL equilibrium operation leaves pinch point curves conceptual analysis heterogeneous azeotropic distillation |
| url | https://www.redalyc.org/articulo.oa?id=64340413006 |