Conceptual analysis of single-feed heterogeneous distillation columns
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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2015-05-01
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| Series: | Ingeniería e Investigación |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/ingeinv/article/view/49247 |
| _version_ | 1818961282657681408 |
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| author | Carlos Arturo Martinez Riascos Libardo Estupiñan Perez |
| author_facet | Carlos Arturo Martinez Riascos Libardo Estupiñan Perez |
| author_sort | Carlos Arturo Martinez Riascos |
| collection | DOAJ |
| description | 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 proposed 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. |
| first_indexed | 2024-12-20T12:10:57Z |
| format | Article |
| id | doaj.art-b4e24e2e73404040affb1402ceb80361 |
| institution | Directory Open Access Journal |
| issn | 0120-5609 2248-8723 |
| language | English |
| last_indexed | 2024-12-20T12:10:57Z |
| publishDate | 2015-05-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Ingeniería e Investigación |
| spelling | doaj.art-b4e24e2e73404040affb1402ceb803612022-12-21T19:41:14ZengUniversidad Nacional de ColombiaIngeniería e Investigación0120-56092248-87232015-05-01352364210.15446/ing.investig.v35n2.4924740621Conceptual analysis of single-feed heterogeneous distillation columnsCarlos Arturo Martinez Riascos0Libardo Estupiñan Perez1Associated Professor, Universidad Nacional de ColombiaPh.D Student, University of Alberta, Canada.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 proposed 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.https://revistas.unal.edu.co/index.php/ingeinv/article/view/49247VLL equilibriumheterogeneous azeotropic distillationoperation leavespinch point curvesconceptual analysis |
| spellingShingle | Carlos Arturo Martinez Riascos Libardo Estupiñan Perez Conceptual analysis of single-feed heterogeneous distillation columns Ingeniería e Investigación VLL equilibrium heterogeneous azeotropic distillation operation leaves pinch point curves conceptual analysis |
| title | Conceptual analysis of single-feed heterogeneous distillation columns |
| title_full | Conceptual analysis of single-feed heterogeneous distillation columns |
| title_fullStr | Conceptual analysis of single-feed heterogeneous distillation columns |
| title_full_unstemmed | Conceptual analysis of single-feed heterogeneous distillation columns |
| title_short | Conceptual analysis of single-feed heterogeneous distillation columns |
| title_sort | conceptual analysis of single feed heterogeneous distillation columns |
| topic | VLL equilibrium heterogeneous azeotropic distillation operation leaves pinch point curves conceptual analysis |
| url | https://revistas.unal.edu.co/index.php/ingeinv/article/view/49247 |
| work_keys_str_mv | AT carlosarturomartinezriascos conceptualanalysisofsinglefeedheterogeneousdistillationcolumns AT libardoestupinanperez conceptualanalysisofsinglefeedheterogeneousdistillationcolumns |