Documents disponibles écrits par cet auteur

A novel method for assessing the effect of pressure on vapor – liquid equilibrium in ternary systems / Daniel A. Beneke in Industrial & engineering chemistry research, Vol. 51 N° 11 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4371–4379 Titre : A novel method for assessing the effect of pressure on vapor – liquid equilibrium in ternary systems Type de document : texte imprimé Auteurs : Daniel A. Beneke, Auteur Année de publication : 2012 Article en page(s) : pp. 4371–4379 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Vapor  liquid  equilibrium Résumé : In distillative separations, operating pressure is an important parameter influencing not only the cost of a given separation, but potentially its feasibility too. A reliable technique for assessing the effect of pressure on vapor–liquid equilibrium is thus imperative for robust distillation design. This paper presents a method that is not only reliable, but also allows a designer to creatively synthesize a column by finding areas where the phase equilibrium may be beneficial for a particular separation. By viewing global residue curve maps which incorporate theoretical negative compositions, pressure effects are easily traceable. It is shown how the NRTL model in particular is a very useful thermodynamic model for this unique assessment of pressure effects. Using this technique, significant insights are gained into the appearance and disappearance of azeotropes at certain pressures. Moreover, this paper presents a novel eigenvalue method which allows one to determine exact critical pressures where residue curve map topology is transformed. ISSN : 0888-58 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202899a [article] A novel method for assessing the effect of pressure on vapor – liquid equilibrium in ternary systems [texte imprimé] / Daniel A. Beneke, Auteur . - 2012 . - pp. 4371–4379. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4371–4379 Mots-clés : Vapor  liquid  equilibrium Résumé : In distillative separations, operating pressure is an important parameter influencing not only the cost of a given separation, but potentially its feasibility too. A reliable technique for assessing the effect of pressure on vapor–liquid equilibrium is thus imperative for robust distillation design. This paper presents a method that is not only reliable, but also allows a designer to creatively synthesize a column by finding areas where the phase equilibrium may be beneficial for a particular separation. By viewing global residue curve maps which incorporate theoretical negative compositions, pressure effects are easily traceable. It is shown how the NRTL model in particular is a very useful thermodynamic model for this unique assessment of pressure effects. Using this technique, significant insights are gained into the appearance and disappearance of azeotropes at certain pressures. Moreover, this paper presents a novel eigenvalue method which allows one to determine exact critical pressures where residue curve map topology is transformed. ISSN : 0888-58 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202899a

On column profile maps / Daniel A. Beneke in Industrial & engineering chemistry research, Vol. 50 N° 10 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6331-6342 Titre : On column profile maps : an analysis of sharp splits Type de document : texte imprimé Auteurs : Daniel A. Beneke, Auteur ; Diane Hildebrandt, Auteur ; David Glasser, Auteur Année de publication : 2011 Article en page(s) : pp. 6331-6342 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Cartography Résumé : Column profile maps (CPMs) have recently been shown to be a useful tool in the design of distillation operations, especially complex configurations. CPMs are essentially a family of composition trajectories for a column section in a distillation column. They have been shown to be topological transforms of residue curve maps, and are dependent on two main parameters: RΔ (generalized reflux) and XΔ (a pseudocomposition vector), which effectively fixes the net flow in a column section. This paper focuses on the interaction between these parameters for the special case of sharp splits. With the CPM technique it has been shown that sharp splits behave in a unique manner, due to a phenomenon termed as "node bumping". In particular, it has been shown that it is possible to locate specific ranges of RΔ where one may drastically influence the movement of profiles in somewhat counterintuitive directions. Although this effect may not be useful in product producing column sections, it is shown how these unique phenomena can affect a separation in a desirable manner, especially when designing unconventional column configurations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158928 [article] On column profile maps : an analysis of sharp splits [texte imprimé] / Daniel A. Beneke, Auteur ; Diane Hildebrandt, Auteur ; David Glasser, Auteur . - 2011 . - pp. 6331-6342. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6331-6342 Mots-clés : Cartography Résumé : Column profile maps (CPMs) have recently been shown to be a useful tool in the design of distillation operations, especially complex configurations. CPMs are essentially a family of composition trajectories for a column section in a distillation column. They have been shown to be topological transforms of residue curve maps, and are dependent on two main parameters: RΔ (generalized reflux) and XΔ (a pseudocomposition vector), which effectively fixes the net flow in a column section. This paper focuses on the interaction between these parameters for the special case of sharp splits. With the CPM technique it has been shown that sharp splits behave in a unique manner, due to a phenomenon termed as "node bumping". In particular, it has been shown that it is possible to locate specific ranges of RΔ where one may drastically influence the movement of profiles in somewhat counterintuitive directions. Although this effect may not be useful in product producing column sections, it is shown how these unique phenomena can affect a separation in a desirable manner, especially when designing unconventional column configurations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158928