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Replacement of trays by packingtoincrease the absorption capacity of acetone during cellulose acetate spinning / Roberto Nasser Jr. 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. 8376–8383 Titre : Replacement of trays by packingtoincrease the absorption capacity of acetone during cellulose acetate spinning Type de document : texte imprimé Auteurs : Roberto Nasser Jr., Auteur Année de publication : 2008 Article en page(s) : p. 8376–8383 Note générale : Chemical engineerng Langues : Anglais (eng) Mots-clés : Acetone  absorptionCellulose  acetate Résumé : All textile uses of cellulose acetate involve acetone recovery, which, because of safety issues, results in large installations, in order to work with dilute streams. This compromises the efficiency of all of the involved unit operations, in this case, acetone absorption in cold water, acetone distillation, and water chilling, making them more expensive. The present article proposes the improvement of the absorption of acetone in water, traditionally performed with sieve trays, by using structured packing instead. The advantageous implementation was enabled through the utilization of a calculation methodology based on concepts of thermodynamic equilibrium of the binary acetone/water system and empirical relations that allow the evaluation of the hydrodynamics of the proposed modification. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800612e [article] Replacement of trays by packingtoincrease the absorption capacity of acetone during cellulose acetate spinning [texte imprimé] / Roberto Nasser Jr., Auteur . - 2008 . - p. 8376–8383. Chemical engineerng Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p. 8376–8383 Mots-clés : Acetone  absorptionCellulose  acetate Résumé : All textile uses of cellulose acetate involve acetone recovery, which, because of safety issues, results in large installations, in order to work with dilute streams. This compromises the efficiency of all of the involved unit operations, in this case, acetone absorption in cold water, acetone distillation, and water chilling, making them more expensive. The present article proposes the improvement of the absorption of acetone in water, traditionally performed with sieve trays, by using structured packing instead. The advantageous implementation was enabled through the utilization of a calculation methodology based on concepts of thermodynamic equilibrium of the binary acetone/water system and empirical relations that allow the evaluation of the hydrodynamics of the proposed modification. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800612e