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Reduction of energy consumption in the process industry using a heat-integrated hybrid distillation pervaporation process / Maria T. Del Pozo Gomez in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4484–4494 Titre : Reduction of energy consumption in the process industry using a heat-integrated hybrid distillation pervaporation process Type de document : texte imprimé Auteurs : Maria T. Del Pozo Gomez, Auteur ; Jens-Uwe Repke, Auteur ; Deu-yeun Kim, Auteur Année de publication : 2009 Article en page(s) : pp. 4484–4494 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Hybrid  distillation  pervaporation  process  Heat  integration  Condensation  energy Résumé : In the present work, the advantages of using heat integration in a hybrid distillation pervaporation process are studied and, on the basis of the developed model, the industrial applicability of the process is analyzed. The basic idea of the heat integration is to condense the distillate stream in a heat-exchanger pipe inside the membrane. The condensation energy is directly released into the process, not needing external heat exchangers to preheat the membrane feed. This is reflected in an important reduction in the process energy consumption. Experimental work has been carried out in order to characterize the membrane and to prove the positive influence of the heat integration. A rigorous model for the pervaporation process has been developed and validated. Additionally, simulation studies take place in order to compare the energy supply in the proposed process with a typical industrial process layout. As a result, in comparison to the results of Sommer and Melin [Sommer, S; Melin, T. Ind. Eng. Chem. Res. 2004, 43, 5248−5259], energy savings of 44.7% can be achieved. Further study has been realized in order to prove the reduction in the specific separation costs. The operation conditions have been varied, finding always lower specific separation costs in the heat integrated case. In the optimal operation point, the reduction reaches its maximum value of 20%. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801540a [article] Reduction of energy consumption in the process industry using a heat-integrated hybrid distillation pervaporation process [texte imprimé] / Maria T. Del Pozo Gomez, Auteur ; Jens-Uwe Repke, Auteur ; Deu-yeun Kim, Auteur . - 2009 . - pp. 4484–4494. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4484–4494 Mots-clés : Hybrid  distillation  pervaporation  process  Heat  integration  Condensation  energy Résumé : In the present work, the advantages of using heat integration in a hybrid distillation pervaporation process are studied and, on the basis of the developed model, the industrial applicability of the process is analyzed. The basic idea of the heat integration is to condense the distillate stream in a heat-exchanger pipe inside the membrane. The condensation energy is directly released into the process, not needing external heat exchangers to preheat the membrane feed. This is reflected in an important reduction in the process energy consumption. Experimental work has been carried out in order to characterize the membrane and to prove the positive influence of the heat integration. A rigorous model for the pervaporation process has been developed and validated. Additionally, simulation studies take place in order to compare the energy supply in the proposed process with a typical industrial process layout. As a result, in comparison to the results of Sommer and Melin [Sommer, S; Melin, T. Ind. Eng. Chem. Res. 2004, 43, 5248−5259], energy savings of 44.7% can be achieved. Further study has been realized in order to prove the reduction in the specific separation costs. The operation conditions have been varied, finding always lower specific separation costs in the heat integrated case. In the optimal operation point, the reduction reaches its maximum value of 20%. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801540a