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Improved performance of a simulated moving bed process by a recycling method in the partial - discard strategy / Kyung Min Kim in Industrial & engineering chemistry research, Vol. 51 N° 29 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 29 (Juillet 2012) . - pp. 9835-9849 Titre : Improved performance of a simulated moving bed process by a recycling method in the partial - discard strategy Type de document : texte imprimé Auteurs : Kyung Min Kim, Auteur ; Hyeon-Hui Lee, Auteur ; Chang-Ha Lee, Auteur Année de publication : 2012 Article en page(s) : pp. 9835-9849 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Recycling  Simulated  moving  bed Résumé : The recycling partial-discard (RPD) strategy was developed to improve the performance of simulated moving bed (SMB) chromatography in partial-discard (PD) strategy by a simulation study. In the RPD operation, each discarded product portion of extract and raffinate is recycled as part of the feed. This strategy was applied to a binary mixture with a nonlinear isotherm in a four-zone SMB with two columns per zone. The two additional operating variables, recycle length (RL) and recycle flowrate (RF), were suggested for the RPD strategy in order to determine the time duration and flowrate of the recycle feed. Compared to those of the PD operation, extract and raffinate with higher purities can be produced from the RPD operation. Simultaneously, the losses in the other performance parameters (recovery, productivity, and eluent consumption) stemming from the PD operation could be favorably reduced by controlling the recycle length and recycle ratio in the RPD operation. The two variables, RL and RF, in the RPD operation played key roles in the improvement and trade-off of SMB performance parameters (purity, recovery, productivity, and eluent consumption). ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26184962 [article] Improved performance of a simulated moving bed process by a recycling method in the partial - discard strategy [texte imprimé] / Kyung Min Kim, Auteur ; Hyeon-Hui Lee, Auteur ; Chang-Ha Lee, Auteur . - 2012 . - pp. 9835-9849. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 29 (Juillet 2012) . - pp. 9835-9849 Mots-clés : Recycling  Simulated  moving  bed Résumé : The recycling partial-discard (RPD) strategy was developed to improve the performance of simulated moving bed (SMB) chromatography in partial-discard (PD) strategy by a simulation study. In the RPD operation, each discarded product portion of extract and raffinate is recycled as part of the feed. This strategy was applied to a binary mixture with a nonlinear isotherm in a four-zone SMB with two columns per zone. The two additional operating variables, recycle length (RL) and recycle flowrate (RF), were suggested for the RPD strategy in order to determine the time duration and flowrate of the recycle feed. Compared to those of the PD operation, extract and raffinate with higher purities can be produced from the RPD operation. Simultaneously, the losses in the other performance parameters (recovery, productivity, and eluent consumption) stemming from the PD operation could be favorably reduced by controlling the recycle length and recycle ratio in the RPD operation. The two variables, RL and RF, in the RPD operation played key roles in the improvement and trade-off of SMB performance parameters (purity, recovery, productivity, and eluent consumption). ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26184962