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Comparison of dynamic and static performances of a quaternary distillation sequence / Gholamreza Baghmisheh in Industrial & engineering chemistry research, Vol. 49 N° 13 (Juillet 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 13 (Juillet 2010) . - pp. 6135–6143 Titre : Comparison of dynamic and static performances of a quaternary distillation sequence Type de document : texte imprimé Auteurs : Gholamreza Baghmisheh, Auteur ; Mohammad Shahrokhi, Auteur ; Ramin Bozorgmehri, Auteur Année de publication : 2010 Article en page(s) : pp. 6135–6143 Note générale : Chemistry engineering Langues : Anglais (eng) Mots-clés : Quaternary  distillation  column  sequences  dynamic  performance Résumé : In this work, steady state and dynamic performances of quaternary distillation column sequences designed based on steady state and dynamic cost functions have been investigated. To quantify the dynamic performance, product losses due to disturbances have been considered in the objective function. In addition, variations of operating costs such as utilities have been considered in the objective function. To separate a quaternary mixture into four products, 22 configurations have been used. It has been observed that the feed composition, disturbance frequency and magnitude affect the dynamic behavior strongly. To decrease the optimization computational load, a scheme that provides a suboptimal result has been proposed. By performing simultaneous optimization that requires much more computational time, it has been shown that the highest ranking configurations obtained by the proposed method are the same as those provided by simultaneous technique. The simulation results indicate that there is no clear pattern for configuration ranking based on column sequence specifications. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100169p [article] Comparison of dynamic and static performances of a quaternary distillation sequence [texte imprimé] / Gholamreza Baghmisheh, Auteur ; Mohammad Shahrokhi, Auteur ; Ramin Bozorgmehri, Auteur . - 2010 . - pp. 6135–6143. Chemistry engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 13 (Juillet 2010) . - pp. 6135–6143 Mots-clés : Quaternary  distillation  column  sequences  dynamic  performance Résumé : In this work, steady state and dynamic performances of quaternary distillation column sequences designed based on steady state and dynamic cost functions have been investigated. To quantify the dynamic performance, product losses due to disturbances have been considered in the objective function. In addition, variations of operating costs such as utilities have been considered in the objective function. To separate a quaternary mixture into four products, 22 configurations have been used. It has been observed that the feed composition, disturbance frequency and magnitude affect the dynamic behavior strongly. To decrease the optimization computational load, a scheme that provides a suboptimal result has been proposed. By performing simultaneous optimization that requires much more computational time, it has been shown that the highest ranking configurations obtained by the proposed method are the same as those provided by simultaneous technique. The simulation results indicate that there is no clear pattern for configuration ranking based on column sequence specifications. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100169p