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Performance and scale-up of karr reciprocating plate extraction columns / Kathryn H. Smith in Industrial & engineering chemistry research, Vol. 47 n°21 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p 8368–8375 Titre : Performance and scale-up of karr reciprocating plate extraction columns Type de document : texte imprimé Auteurs : Kathryn H. Smith, Auteur ; Tim Bowser, Auteur ; Geoff W. Stevens, Auteur Année de publication : 2008 Article en page(s) : p 8368–8375 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Hydrodynamic  and  mass  System  of  kerosene/tributyl  phosphate− Résumé : The hydrodynamic and mass transfer performance of Karr reciprocating plate extraction columns with varying column diameters has been presented in order to examine how column performance changes with scale. An ideal liquid system of kerosene/tributyl phosphate−phenol−water was initially studied using a 50 mm diameter Karr column. Correlations were developed to predict the dispersed phase holdup, drop size distribution, and overall mass transfer coefficient over a range of operating conditions. This was followed by column performance studies using a phenolic alkaloid liquid system in Karr columns with diameters of 50, 100, and 300 mm. Overall results showed that there was no significant change in either the dispersed phase holdup or the mass transfer coefficient with column diameter. It was therefore concluded that overall column performance was independent of column diameter and the traditional Karr column scale-up equations were too conservative. This study also showed that factors such as droplet and plate coalescence, contamination of liquid systems, aging of column internals, and variation in physical properties can greatly influence the column’s performance and need to be carefully considered when designing a Karr column. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800581u#afn1 [article] Performance and scale-up of karr reciprocating plate extraction columns [texte imprimé] / Kathryn H. Smith, Auteur ; Tim Bowser, Auteur ; Geoff W. Stevens, Auteur . - 2008 . - p 8368–8375. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p 8368–8375 Mots-clés : Hydrodynamic  and  mass  System  of  kerosene/tributyl  phosphate− Résumé : The hydrodynamic and mass transfer performance of Karr reciprocating plate extraction columns with varying column diameters has been presented in order to examine how column performance changes with scale. An ideal liquid system of kerosene/tributyl phosphate−phenol−water was initially studied using a 50 mm diameter Karr column. Correlations were developed to predict the dispersed phase holdup, drop size distribution, and overall mass transfer coefficient over a range of operating conditions. This was followed by column performance studies using a phenolic alkaloid liquid system in Karr columns with diameters of 50, 100, and 300 mm. Overall results showed that there was no significant change in either the dispersed phase holdup or the mass transfer coefficient with column diameter. It was therefore concluded that overall column performance was independent of column diameter and the traditional Karr column scale-up equations were too conservative. This study also showed that factors such as droplet and plate coalescence, contamination of liquid systems, aging of column internals, and variation in physical properties can greatly influence the column’s performance and need to be carefully considered when designing a Karr column. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800581u#afn1