Documents disponibles écrits par cet auteur

Deepening internal mass integration in design of reactive distillation columns, 1: principle and procedure / Jie Sun in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2034–2048 Titre : Deepening internal mass integration in design of reactive distillation columns, 1: principle and procedure Type de document : texte imprimé Auteurs : Jie Sun, Auteur ; Kejin Huang, Auteur ; Shaofeng Wang, Auteur Année de publication : 2009 Article en page(s) : p. 2034–2048 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Reactive  distillation  column  Internal  mass  integration  Catalyst Résumé : For a reactive distillation column involving reactions with negligible or no thermal effect, the thermodynamic efficiency can be improved substantially through deepening internal mass integration between the reaction operation and the separation operation involved. Four strategies, including the superimposition of reactive section onto rectifying and stripping sections, relocation of feed stages, and redistribution of catalyst within the reactive section, can be used to intensify the internal mass integration. With a systematic application of these strategies, a sequential procedure is devised for the synthesis and design of reactive distillation columns involving reactions with negligible or no thermal effect. Four hypothetical ideal reactive distillation systems are used as examples to evaluate the philosophy proposed, and a substantial reduction of utility consumption is secured in addition to a further abatement in fixed investment. These striking results are evidence of the strong necessity and efficacy of deepening internal mass integration in the synthesis and design of reactive distillation columns involving reactions with negligible or no thermal effect. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801144n [article] Deepening internal mass integration in design of reactive distillation columns, 1: principle and procedure [texte imprimé] / Jie Sun, Auteur ; Kejin Huang, Auteur ; Shaofeng Wang, Auteur . - 2009 . - p. 2034–2048. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2034–2048 Mots-clés : Reactive  distillation  column  Internal  mass  integration  Catalyst Résumé : For a reactive distillation column involving reactions with negligible or no thermal effect, the thermodynamic efficiency can be improved substantially through deepening internal mass integration between the reaction operation and the separation operation involved. Four strategies, including the superimposition of reactive section onto rectifying and stripping sections, relocation of feed stages, and redistribution of catalyst within the reactive section, can be used to intensify the internal mass integration. With a systematic application of these strategies, a sequential procedure is devised for the synthesis and design of reactive distillation columns involving reactions with negligible or no thermal effect. Four hypothetical ideal reactive distillation systems are used as examples to evaluate the philosophy proposed, and a substantial reduction of utility consumption is secured in addition to a further abatement in fixed investment. These striking results are evidence of the strong necessity and efficacy of deepening internal mass integration in the synthesis and design of reactive distillation columns involving reactions with negligible or no thermal effect. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801144n

A simplified scheme of externally heat-integrated double distillation columns (EHIDDiC) with three external heat exchangers / Yun Wang in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3349–3364 Titre : A simplified scheme of externally heat-integrated double distillation columns (EHIDDiC) with three external heat exchangers Type de document : texte imprimé Auteurs : Yun Wang, Auteur ; Kejin Huang, Auteur ; Shaofeng Wang, Auteur Année de publication : 2010 Article en page(s) : pp. 3349–3364 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Scheme  Columns  Heat  Integrated  Distillation  ColumnDiC  Heat  Exchangers Résumé : A simplified scheme of the externally heat-integrated double distillation columns (EHIDDiC), termed SEHIDDiC in this paper, is proposed and studied. Only three external heat exchangers are used to approximate the external heat integration between the rectifying section of the high-pressure distillation column and the stripping section of the low-pressure distillation column. The locations and sizes of the three external heat exchangers are key decision variables and should be considered deliberately to maximize thermodynamic efficiency in process development. A sequential procedure is thus derived for process synthesis and design, and the SEHIDDiC is then evaluated through intensive comparison with conventional distillation columns and the EHIDDiC in terms of the separation of C2 and benzene/toluene binary mixtures. The results obtained indicate that the SEHIDDiC could be an excellent candidate to approximate the EHIDDiC with even a greater reduction in utility consumption and a lesser extent of capital investment. The SEHIDDiC offers essentially a much simple way to design and implement the concept of the EHIDDiC in separation processes. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901534q [article] A simplified scheme of externally heat-integrated double distillation columns (EHIDDiC) with three external heat exchangers [texte imprimé] / Yun Wang, Auteur ; Kejin Huang, Auteur ; Shaofeng Wang, Auteur . - 2010 . - pp. 3349–3364. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3349–3364 Mots-clés : Scheme  Columns  Heat  Integrated  Distillation  ColumnDiC  Heat  Exchangers Résumé : A simplified scheme of the externally heat-integrated double distillation columns (EHIDDiC), termed SEHIDDiC in this paper, is proposed and studied. Only three external heat exchangers are used to approximate the external heat integration between the rectifying section of the high-pressure distillation column and the stripping section of the low-pressure distillation column. The locations and sizes of the three external heat exchangers are key decision variables and should be considered deliberately to maximize thermodynamic efficiency in process development. A sequential procedure is thus derived for process synthesis and design, and the SEHIDDiC is then evaluated through intensive comparison with conventional distillation columns and the EHIDDiC in terms of the separation of C2 and benzene/toluene binary mixtures. The results obtained indicate that the SEHIDDiC could be an excellent candidate to approximate the EHIDDiC with even a greater reduction in utility consumption and a lesser extent of capital investment. The SEHIDDiC offers essentially a much simple way to design and implement the concept of the EHIDDiC in separation processes. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901534q

Understanding the impact of operating pressure on process intensification in reactive distillation columns / Shaofeng Wang in Industrial & engineering chemistry research, Vol. 49 N° 9 (Mai 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 9 (Mai 2010) . - pp. 4269–4284 Titre : Understanding the impact of operating pressure on process intensification in reactive distillation columns Type de document : texte imprimé Auteurs : Shaofeng Wang, Auteur ; Kejin Huang, Auteur ; Quanquan Lin, Auteur Année de publication : 2010 Article en page(s) : pp. 4269–4284 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Reactive  distillation  column Résumé : For a reactive distillation column involving reactions with high thermal effect, process intensification can be reinforced with the prudent adjustment of operating pressure within its feasible region bounded by the given hot and cold utilities. Three specific situations can be identified and should be dealt with cautiously during process synthesis and design. For a reactive distillation column involving reversible endothermic reactions, the enhancement of the operating pressure increases reactant conversion and reaction heat load, thus facilitating process intensification between the reaction operation and the separation operation involved. For a reactive distillation column involving equilibrium-limited exothermic reactions, the abatement of operating pressure increases reactant conversion and the reaction heat load, thus reinforcing process intensification between the reaction operation and the separation operation involved. For a reactive distillation column involving kinetically controlled exothermic reactions, the complicated relationship between operating pressure and reactant conversion and reaction heat load must be dealt with carefully, thus being likely to benefit process intensification between the reaction operation and the separation operation involved. Six hypothetical ideal and two real reactive distillation systems involving either equilibrium-limited or kinetically controlled reactions with high thermal effect are studied to evaluate the proposed philosophy. It has been found that with the appropriate selection of operating pressure, a considerable reduction of utility consumption can be secured beside a possible abatement in capital investment. These striking results evidence the strong necessity of deepening process intensification through the adjustment of operating pressure in the synthesis and design of reactive distillation columns involving reactions with high thermal effect. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100067z [article] Understanding the impact of operating pressure on process intensification in reactive distillation columns [texte imprimé] / Shaofeng Wang, Auteur ; Kejin Huang, Auteur ; Quanquan Lin, Auteur . - 2010 . - pp. 4269–4284. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 9 (Mai 2010) . - pp. 4269–4284 Mots-clés : Reactive  distillation  column Résumé : For a reactive distillation column involving reactions with high thermal effect, process intensification can be reinforced with the prudent adjustment of operating pressure within its feasible region bounded by the given hot and cold utilities. Three specific situations can be identified and should be dealt with cautiously during process synthesis and design. For a reactive distillation column involving reversible endothermic reactions, the enhancement of the operating pressure increases reactant conversion and reaction heat load, thus facilitating process intensification between the reaction operation and the separation operation involved. For a reactive distillation column involving equilibrium-limited exothermic reactions, the abatement of operating pressure increases reactant conversion and the reaction heat load, thus reinforcing process intensification between the reaction operation and the separation operation involved. For a reactive distillation column involving kinetically controlled exothermic reactions, the complicated relationship between operating pressure and reactant conversion and reaction heat load must be dealt with carefully, thus being likely to benefit process intensification between the reaction operation and the separation operation involved. Six hypothetical ideal and two real reactive distillation systems involving either equilibrium-limited or kinetically controlled reactions with high thermal effect are studied to evaluate the proposed philosophy. It has been found that with the appropriate selection of operating pressure, a considerable reduction of utility consumption can be secured beside a possible abatement in capital investment. These striking results evidence the strong necessity of deepening process intensification through the adjustment of operating pressure in the synthesis and design of reactive distillation columns involving reactions with high thermal effect. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100067z