Servicios Personalizados
Revista
Articulo
Indicadores
- Citado por SciELO
- Accesos
Links relacionados
- Similares en SciELO
Compartir
Revista mexicana de ingeniería química
versión impresa ISSN 1665-2738
Rev. Mex. Ing. Quím vol.8 no.1 Ciudad de México abr. 2009
Simulación y control
Desempeño dinámico de esquemas alternativos a la columna petlyuk (columna de pared divisoria) para la separación de mezclas ternarias
Dynamic behavior of alternate schemes to petlyuk column (dividing wall column) for separation of ternary mixtures
J. MartínezCisneros, A. A. HernándezSánchez, J.G. SegoviaHernández*, S. Hernández, H. Hernández
Universidad de Guanajuato, Departamento de Ingeniería Química, Noria Alta s/n, Guanajuato, Gto., México 36050. * Autor para la correspondencia. Email: gsegovia@quijote.ugto.mx Tel: (52) 473 73 20006 ext 8142
Recibido 25 de Julio 2008
Aceptado 8 de Diciembre 2008
Resumen
Los sistemas de destilación térmicamente acoplados han sido propuestos ya que pueden efectuar la tarea de separación de una mezcla utilizando bajos consumos energéticos en comparación con los esquemas convencionales de destilación. La estructura de estos sistemas complejos ofrece retos en el área de control debido a la transferencia de corrientes de vapor (o líquido) entre las columnas. En particular, la presencia de los reciclos en estos sistemas acoplados ha generado la noción de que algunos problemas de control pueden ser detectados durante la operación de dichos sistemas en comparación con el buen desempeño de las secuencias de destilación convencionales. Esta es una de las principales razones para que no haya un amplio uso de las columnas térmicamente acopladas a nivel industrial. Recientemente algunos esquemas alternos a la columna Petlyuk han sido propuestos. En este trabajo se analiza las propiedades de control de dos esquemas alternativos a la columna Petlyuk. El desempeño dinámico de los sistemas es analizado utilizando la técnica de la descomposición en valores singulares y mediante simulaciones dinámicas rigurosas. Los resultados muestran que las estructuras alternativas muestran mejores propiedades de control que la estructura Petlyuk convencional.
Palabras clave: columna Petlyuk, propiedades de control, ahorro de energía, columnas alternativas, diseño.
Abstract
Thermally coupled distillation systems have been proposed to perform distillation separation tasks with the incentive of achieving lower energy consumption levels with respect to conventional distillation sequences. The structure of the complex systems offers some control challenges arising from the transfer of vapor (or liquid) streams between the columns. In particular, the presence of recycle streams in the coupled schemes has influenced the notion that control problems might be expected during the operation of those systems with respect to the rather wellknown behavior of conventional distillation sequences. That has been one of the main reasons for the lack of industrial implementation of thermally coupled distillation schemes. Recently, some alternate schemes to Petlyuk column have been proposed. In this work, we analyze the control properties of two alternative distillation schemes to the Petlyuk column. The dynamic behavior is analyzed using the technique of singular value decomposition and rigorous dynamic simulations. The results indicate that alternate structures show better control properties than traditional Petlyuk structure.
Keywords: Petlyuk column, control properties, energy savings, alternative sequences, design.
DESCARGAR ARTÍCULO EN FORMATO PDF
Agradecimientos
Los autores muestran un agradecimiento a la Universidad de Guanajuato, CONACyT y CONCyTEG por el apoyo brindado para la realización de este trabajo.
Referencias
Agrawal, R., Fidkowski, Z. (1998). More operable arrangements of fully thermally coupled distillation columns. AIChE Journal 44, 25652568. [ Links ]
AlcántaraÁvila, R., CabreraRuiz, J., TamayoGalván, V.E., SegoviaHernández, J.G., Hernández, S. (2006). Control properties of alternative schemes to thermally coupled distillation columns for ternary mixtures separation, in distillation and absorption '06. IChemeE Symposium Series No. 152, UK, 610618. [ Links ]
Chen, D. (2002). Relative gain array analysis for uncertain process models. AIChE Journal 48, 302310. [ Links ]
Dünnebier, G., Pantelides, C. (1999). Optimal design of thermally coupled distillation columns. Industrial and Engineering Chemistry Research 38, 162176. [ Links ]
Finn, A. J. (1993). Consider Thermally Coupled Distillation. Chemical Engineering Progress, October 4150. [ Links ]
Gabor, M., Mizsey, P. (2008). A methodology to determine controllability indices in the frequency domain. Industrial and Engineering Chemistry Research 47, 48074816. [ Links ]
Glinos, K., Malone, F. (1988). Optimality regions for complex column alternatives in distillation systems. Chemical Engineering Research and Design 66, 229240. [ Links ]
GómezCastro, F.I., SegoviaHernández, J.G., Hernández, S., GutiérrezAntonio, C., BrionesRamírez, A. (2008). Dividing wall distillation columns: Optimization and control properties. Chemical Engineering and Technology, 31, 12461260. [ Links ]
Hernández, S., PereiraPech, S., Jiménez, A., RicoRamírez, V. (2003). Energy efficiency of an indirect thermally coupled distillation sequence. Canadian Journal of Chemical Engineering 81, 10871091. [ Links ]
Hernández, S., Jiménez, A. (1996). Design of optimal thermallycoupled distillation systems using a dynamic model. Transactions of the Institute of Chemical Engineering 74, 357362. [ Links ]
Hernández, S., Jiménez, A. (1999a). Design of energyefficient Petlyuk systems. Computers and Chemical Engineering 23, 10051010. [ Links ]
Hernández, S., Jiménez, A. (1999b). Controllability analysis of thermally coupled distillation systems. Industrial and Engineering Chemistry Research 38, 39573963. [ Links ]
Jiménez, A., Hernández, S., Montoy, F. A., ZavalaGarcía, M. (2001). Analysis of control properties of conventional and nonconventional distillation sequences, Industrial and Engineering Chemistry Research 40, 3757 3761. [ Links ]
Kaibel, G., Schoenmakers, H. (2002). Process synthesis and design in industrial practice, In Proceedings of ESCAPE12, Elsevier; Amsterdam. The Netherlands, 920. [ Links ]
Kaymak, D.B., Luyben, W.L. (2008). Quantitative comparison of dynamic controllability between a reactive distillation column and a conventional multiunit process. Computers and Chemical Engineering 32, 14561470. [ Links ]
Kim, Y.H. (2006). A new fully thermally coupled distillation column with postfractionator. Chemical Engineering and Processing 45, 254263. [ Links ]
Klema, V.C., Laub, A.J. (1980). The singular value decomposition: Its computation and some applications. IEEE Transactions on Automatic Control 25, 164170. [ Links ]
Luyben, W.L. (2008a). Design and control of a fully heatintegrated pressureswing azeotropic distillation system. Industrial and Engineering Chemistry Research 47, 26812695. [ Links ]
Luyben, W.L. (2008b). Effect of solvent on controllability in extractive distillation. Industrial and Engineering Chemistry Research 47, 44254439. [ Links ]
Malinen, I., Tanskanen, J. (2007) A rigorous minimum energy calculation method for a fully thermally coupled distillation system. Transactions of the Institute of Chemical Engineers 85, 502 509. [ Links ]
Muralikrishna, K.; Madhavan, K.P., Shah, S.S. (2002). Development of dividing wall distillation column design space for a specified separation. Transactions of the Institute of Chemical Engineers 80, 155166. [ Links ]
Papastathopoulou, H. S., Luyben, W.L. (1991). Control of binary sidestream column. Industrial and Engineering Chemistry Research 30, 705713. [ Links ]
Rong, B.G., Kraslawski, A. (2002). Optimal design of distillation flowsheets with a lower number of thermal couplings for multicomponent separations. Industrial and Engineering Chemistry Research 41, 57165726. [ Links ]
SegoviaHernández, J.G., Hernández, S., Jiménez, A., (2002a). Control behavior of thermally coupled distillation sequences. Transactions of the Institute of Chemical Engineers 80, 783789. [ Links ]
SegoviaHernández, J.G.,Hernández, S., Jiménez, A. (2002b) Análisis dinámico de secuencias de destilación térmicamente acopladas. Información Tecnológica 13, 103108. [ Links ]
SegoviaHernández, J.G., Hernández, S., Rico Ramírez V., Jiménez, A. (2004). A comparison of the feedback control behavior between thermally coupled and conventional distillation schemes. Computers and Chemical Engineering 28, 811819. [ Links ]
SegoviaHernández, J.G., Hernández, S., Jiménez, A. (2005a). Analysis of dynamic properties of alternative sequences to the Petlyuk column. Computers and Chemical Engineering 29, 13891399. [ Links ]
SegoviaHernández, J.G., Hernández, S., Jiménez, A., Femat, R. (2005). Dynamic behavoir and control of the Petlyuk scheme via a proportionalintegral controller with disturbance estimation. Chemical and Biochemical Engineering Quarterly 19, 243253. [ Links ]
SegoviaHernández, J.G., HernándezVargas, E.A., MárquezMuñoz, J.A., Hernández, S., Jiménez, A. (2005c). Control properties and thermodynamic analysis of two alternatives to thermally coupled distillation systems with side columns. Chemical and Biochemical Engineering Quarterly 19, 325332. [ Links ]
SegoviaHernández, J.G., Hernández, S., Jiménez, A. (2006a). A short note about energyefficiency performance of thermally coupled distillation sequences. Canadian Journal of Chemical Engineering 84, 139144. [ Links ]
SegoviaHernández, J.G., BonillaPetriciolet, A., SalcedoEstrada, L.I. (2006b) Dynamic analysis of thermally coupled distillation sequences with unidirectional flows for the separation of ternary mixtures. Korean Journal of Chemical Engineering 23, 689698. [ Links ]
SegoviaHernández, J.G.,. HernándezVargas, E.A., MárquezMuñoz, J.A. (2007a). Control properties of thermally coupled distillation sequences for different operating conditions. Computers and Chemical Engineering 31, 867874. [ Links ]
SegoviaHernández, J.G., Hernández, S., Femat, R., Jiménez, A. (2007b). Control of thermally coupled distillation sequences with dynamic estimation of load disturbances. Industrial and Engineering Chemistry Research 46, 546558. [ Links ]
Tedder, D. W., Rudd, D.F. (1978). Parametric studies in industrial distillation: Part I. Design comparisons. AIChE Journal 24, 303315. [ Links ]
Triantafyllou, C., Smith, R. (1992). The design and optimization of fully thermally coupled distillation columns, Transactions of the Institute Chemical Engineers 70, 118132. [ Links ]
Vaca, M., Jiménez, A., Monroy Loperena, A. (2007). Design of Petlyuk distillation columns aided with collocation techniques. Industrial and Engineering Chemistry Research 46, 53655370. [ Links ]
Wang, S.J., Lee, C.J., Jang, S.S., Shieh, S.S. (2008). Plantwide design and control of acetic acid dehydration system via heterogeneous azeotropic distillation and divided wall distillation. Journal of Process Control 18, 4560. [ Links ]
Wang, S.J., Wong, D.S.H. (2008). Controllability and energy efficiency of a highpurity divided wall column. Chemical Engineering Science 62, 10101025. [ Links ]