Documents disponibles écrits par cet auteur

Effect of relative volatilities on inferential temperature control of reactive distillation columns / Devrim B. Kaymak in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8138-8152 Titre : Effect of relative volatilities on inferential temperature control of reactive distillation columns Type de document : texte imprimé Auteurs : Devrim B. Kaymak, Auteur ; Denizhan Yilmaz, Auteur ; Ahmet Z. Gurer, Auteur Année de publication : 2011 Article en page(s) : pp. 8138-8152 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Distillation  column  Distillation  with  reaction  Temperature  control Résumé : Several control structures for different types of reactive distillation columns have been studied in the literature. In general, these are the ternary systems with the chemistry A + B ↔ C and the quaternary systems with the Chemistry A+B ↔ C + D. In some cases, the ternary system may also contain an additional component I which is inert in terms of reaction. The growing literature includes both ideal generic and real chemical systems. However, all papers dealing with ideal generic systems assume constant relative volatilities between adjacent components. This paper explores the effect of temperature-dependent relative volatilities on inferential temperature control of reactive distillation columns. Three types of chemical systems are considered: a ternary system without inert component, a ternary system with inert component, and a quaternary system. Significant differences are observed between the results of these systems. The inferential control structure ofthe ternary system without inert provides effective control for any case of relative volatilities. However, there are some offset in bottoms and distillate compositions of quaternary system. The results illustrate that the magnitude of the offset in distillate composition increases significantly with the increase in the temperature-dependency of relative volatility. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332139 [article] Effect of relative volatilities on inferential temperature control of reactive distillation columns [texte imprimé] / Devrim B. Kaymak, Auteur ; Denizhan Yilmaz, Auteur ; Ahmet Z. Gurer, Auteur . - 2011 . - pp. 8138-8152. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8138-8152 Mots-clés : Distillation  column  Distillation  with  reaction  Temperature  control Résumé : Several control structures for different types of reactive distillation columns have been studied in the literature. In general, these are the ternary systems with the chemistry A + B ↔ C and the quaternary systems with the Chemistry A+B ↔ C + D. In some cases, the ternary system may also contain an additional component I which is inert in terms of reaction. The growing literature includes both ideal generic and real chemical systems. However, all papers dealing with ideal generic systems assume constant relative volatilities between adjacent components. This paper explores the effect of temperature-dependent relative volatilities on inferential temperature control of reactive distillation columns. Three types of chemical systems are considered: a ternary system without inert component, a ternary system with inert component, and a quaternary system. Significant differences are observed between the results of these systems. The inferential control structure ofthe ternary system without inert provides effective control for any case of relative volatilities. However, there are some offset in bottoms and distillate compositions of quaternary system. The results illustrate that the magnitude of the offset in distillate composition increases significantly with the increase in the temperature-dependency of relative volatility. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332139

Inferential Temperature control structures for different types of two-reactant reactive distillation systems / Devrim B. Kaymak in Industrial & engineering chemistry research, Vol. 50 N° 11 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 6777-6793 Titre : Inferential Temperature control structures for different types of two-reactant reactive distillation systems Type de document : texte imprimé Auteurs : Devrim B. Kaymak, Auteur ; Denizhan Yilmaz, Auteur ; Ahmet Z. Gurer, Auteur Année de publication : 2011 Article en page(s) : pp. 6777-6793 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Distillation  with  reaction  Temperature  control Résumé : The control performance of three types of two-temperature inferential control structures for the economic optimum designs of two-reactant ideal reactive distillation systems is evaluated. Three commonly encountered reaction chemistries are studied, namely, a single-product ternary system without inert, a single-product ternary system with inert, and a two-product quaternary system. Closed loop results for the different reactive distillation systems demonstrate significant differences in terms of workable control structures and appropriate temperature control tray locations. A suitable two-temperature inferential control structure for the optimum designs of all the systems is found. The result for the ternary system with inert is in contrast to recent reports claiming the need for column internal composition control. The results also suggest that, with a properly designed two-temperature inferential control system, column overdesign for good controllability is not needed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199898 [article] Inferential Temperature control structures for different types of two-reactant reactive distillation systems [texte imprimé] / Devrim B. Kaymak, Auteur ; Denizhan Yilmaz, Auteur ; Ahmet Z. Gurer, Auteur . - 2011 . - pp. 6777-6793. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 6777-6793 Mots-clés : Distillation  with  reaction  Temperature  control Résumé : The control performance of three types of two-temperature inferential control structures for the economic optimum designs of two-reactant ideal reactive distillation systems is evaluated. Three commonly encountered reaction chemistries are studied, namely, a single-product ternary system without inert, a single-product ternary system with inert, and a two-product quaternary system. Closed loop results for the different reactive distillation systems demonstrate significant differences in terms of workable control structures and appropriate temperature control tray locations. A suitable two-temperature inferential control structure for the optimum designs of all the systems is found. The result for the ternary system with inert is in contrast to recent reports claiming the need for column internal composition control. The results also suggest that, with a properly designed two-temperature inferential control system, column overdesign for good controllability is not needed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199898