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Classification of chemical processes: a graphical approach to process synthesis to improve reactive process work efficiency / Baraka Celestin Sempuga in Industrial & engineering chemistry research, Vol. 49 N° 17 (Septembre 1, 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 8227–8237 Titre : Classification of chemical processes: a graphical approach to process synthesis to improve reactive process work efficiency Type de document : texte imprimé Auteurs : Baraka Celestin Sempuga, Auteur ; Brendon Hausberger, Auteur ; Bilal Patel, Auteur Année de publication : 2010 Article en page(s) : pp 8227–8237 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Chemical  processes  Process  work  efficiency. Résumé : To reduce carbon dioxide emissions for chemical processes, one should make them as reversible as possible. Patel et al. [Ind. Eng. Chem. Res. 2005, 44, 3529−3537] showed that, in some cases, one can analyze processes in terms of their work and heat requirements. In particular, for processes, there exists a temperature that is called “the Carnot temperature”, at which one can satisfy the work requirement for the process, using the heat that must be added or removed. The analogy of a heat engine and Carnot temperature is applied to chemical processes, particularly on reactive processes, using a graphical approach. This approach looks at chemical processes holistically, where only the inlet and outlet streams are considered. The process is represented in a ΔH−ΔG space. Chemical processes are classified in different thermodynamics regions as defined in the ΔH−ΔG space, and their feasibility in terms of heat and work requirement is discussed. This approach allows one to determine whether heat at an appropriate temperature is sufficient to meet the work requirement of a chemical process, or if other means should be considered. The approach is used to investigate and discuss the possibility of combining reactive chemical processes classified in different thermodynamic regions in the ΔH−ΔG space, with the purpose of making infeasible processes possible, or to minimize, or even eliminate, the work requirement of the combined process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100288h [article] Classification of chemical processes: a graphical approach to process synthesis to improve reactive process work efficiency [texte imprimé] / Baraka Celestin Sempuga, Auteur ; Brendon Hausberger, Auteur ; Bilal Patel, Auteur . - 2010 . - pp 8227–8237. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 8227–8237 Mots-clés : Chemical  processes  Process  work  efficiency. Résumé : To reduce carbon dioxide emissions for chemical processes, one should make them as reversible as possible. Patel et al. [Ind. Eng. Chem. Res. 2005, 44, 3529−3537] showed that, in some cases, one can analyze processes in terms of their work and heat requirements. In particular, for processes, there exists a temperature that is called “the Carnot temperature”, at which one can satisfy the work requirement for the process, using the heat that must be added or removed. The analogy of a heat engine and Carnot temperature is applied to chemical processes, particularly on reactive processes, using a graphical approach. This approach looks at chemical processes holistically, where only the inlet and outlet streams are considered. The process is represented in a ΔH−ΔG space. Chemical processes are classified in different thermodynamics regions as defined in the ΔH−ΔG space, and their feasibility in terms of heat and work requirement is discussed. This approach allows one to determine whether heat at an appropriate temperature is sufficient to meet the work requirement of a chemical process, or if other means should be considered. The approach is used to investigate and discuss the possibility of combining reactive chemical processes classified in different thermodynamic regions in the ΔH−ΔG space, with the purpose of making infeasible processes possible, or to minimize, or even eliminate, the work requirement of the combined process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100288h