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Modified duplex PSA.1. sharp separation and process intensification for CO2-N2-13X zeolite system / S. V. Sivakumar in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3426-3436 Titre : Modified duplex PSA.1. sharp separation and process intensification for CO2-N2-13X zeolite system Type de document : texte imprimé Auteurs : S. V. Sivakumar, Auteur ; D. P. Rao, Auteur Année de publication : 2011 Article en page(s) : pp. 3426-3436 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Zeolite  Carbon  dioxide Résumé : A modified duplex PSA has been proposed, which could yield sharp separation and has the potential for process intensification. The performances for the original and the modified duplex PSA have been evaluated for two types of systems: the CO2-N2-13X zeolite with single component adsorption and the N2-O2-5A zeolite with competing adsorption. Part 1 of the companion papers presents the simulation studies on the separation of the CO2-N2 mixture. The purities of both products were in excess of 99 mol % with the modified duplex PSA against 78 mol% CO2 and 95 mol% N2 with the original duplex PSA for the same conditions. The bed sizes and energy requirements for the modified duplex PSA were one-half of those for the original duplex PSA. Part 2 presents studies on the separation of the N2-O2 mixture. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944509 [article] Modified duplex PSA.1. sharp separation and process intensification for CO2-N2-13X zeolite system [texte imprimé] / S. V. Sivakumar, Auteur ; D. P. Rao, Auteur . - 2011 . - pp. 3426-3436. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3426-3436 Mots-clés : Zeolite  Carbon  dioxide Résumé : A modified duplex PSA has been proposed, which could yield sharp separation and has the potential for process intensification. The performances for the original and the modified duplex PSA have been evaluated for two types of systems: the CO2-N2-13X zeolite with single component adsorption and the N2-O2-5A zeolite with competing adsorption. Part 1 of the companion papers presents the simulation studies on the separation of the CO2-N2 mixture. The purities of both products were in excess of 99 mol % with the modified duplex PSA against 78 mol% CO2 and 95 mol% N2 with the original duplex PSA for the same conditions. The bed sizes and energy requirements for the modified duplex PSA were one-half of those for the original duplex PSA. Part 2 presents studies on the separation of the N2-O2 mixture. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944509

Modified duplex PSA. 2. sharp separation and process intensification for N2-O2-5A zeolite system / S. V. Sivakumar in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3437-3445 Titre : Modified duplex PSA. 2. sharp separation and process intensification for N2-O2-5A zeolite system Type de document : texte imprimé Auteurs : S. V. Sivakumar, Auteur ; D. P. Rao, Auteur Année de publication : 2011 Article en page(s) : pp. 3437-3445 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Zeolite Résumé : We present the simulation studies carried on separation of the N2-O2 mixture with the original and modified duplex PSA. The purities of products were in excess of 99 mol % with the modified duplex PSA, whereas the original duplex PSA yielded product purities of 72 mol %. For both product purities of 95 mol %, the bed size and energy requirements with the modified duplex PSA were less by 10 and 2.5 times respectively compared to the conventional PSA and were less by an order of magnitude compared to those with original duplex PSA. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944510 [article] Modified duplex PSA. 2. sharp separation and process intensification for N2-O2-5A zeolite system [texte imprimé] / S. V. Sivakumar, Auteur ; D. P. Rao, Auteur . - 2011 . - pp. 3437-3445. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3437-3445 Mots-clés : Zeolite Résumé : We present the simulation studies carried on separation of the N2-O2 mixture with the original and modified duplex PSA. The purities of products were in excess of 99 mol % with the modified duplex PSA, whereas the original duplex PSA yielded product purities of 72 mol %. For both product purities of 95 mol %, the bed size and energy requirements with the modified duplex PSA were less by 10 and 2.5 times respectively compared to the conventional PSA and were less by an order of magnitude compared to those with original duplex PSA. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944510

Process intensification in HiGee absorption and distillation / Lava Agarwal in Industrial & engineering chemistry research, Vol. 49 N° 20 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 10046–10058 Titre : Process intensification in HiGee absorption and distillation : Design procedure and applications Type de document : texte imprimé Auteurs : Lava Agarwal, Auteur ; V. Pavani, Auteur ; D. P. Rao, Auteur Année de publication : 2011 Article en page(s) : pp. 10046–10058 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Design  Distillation Résumé : HiGee technology is emerging as an alternative to conventional tray and packed towers for mass-transfer applications. To evaluate the process intensification (volume reduction) potential of the technology, a systematic design procedure is developed in this work. HiGee designs using split packing innovation of Chandra et al. [Ind. Eng. Chem. Res. 2005, 44, 4051-4060] are developed for four industrially relevant distillation and absorption systems. Comparison with conventional packed or tray tower designs shows that significant volume reduction is possible. For the systems studied, the process intensification achieved is particularly impressive when the gas side mass-transfer resistance is dominant. The results suggest that split packing design innovation may be particularly suitable for intensification of gas side mass-transfer resistance controlled processes. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23325828 [article] Process intensification in HiGee absorption and distillation : Design procedure and applications [texte imprimé] / Lava Agarwal, Auteur ; V. Pavani, Auteur ; D. P. Rao, Auteur . - 2011 . - pp. 10046–10058. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 10046–10058 Mots-clés : Design  Distillation Résumé : HiGee technology is emerging as an alternative to conventional tray and packed towers for mass-transfer applications. To evaluate the process intensification (volume reduction) potential of the technology, a systematic design procedure is developed in this work. HiGee designs using split packing innovation of Chandra et al. [Ind. Eng. Chem. Res. 2005, 44, 4051-4060] are developed for four industrially relevant distillation and absorption systems. Comparison with conventional packed or tray tower designs shows that significant volume reduction is possible. For the systems studied, the process intensification achieved is particularly impressive when the gas side mass-transfer resistance is dominant. The results suggest that split packing design innovation may be particularly suitable for intensification of gas side mass-transfer resistance controlled processes. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23325828