Mixing and dissolution times for a cowles disk agitator in large-scale emulsion preparation / Thomas L. Rodgers in Industrial & engineering chemistry research, Vol. 48 N° 14 (Juillet 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 14 (Juillet 2009) . - pp. 6859–6868 Titre : Mixing and dissolution times for a cowles disk agitator in large-scale emulsion preparation Type de document : texte imprimé Auteurs : Thomas L. Rodgers, Auteur ; Michael Cooke, Auteur ; Flor R. Siperstein, Auteur Année de publication : 2009 Article en page(s) : pp. 6859–6868 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Emulsions Viscous fluids Dissolution times Non-Newtonian highly viscous surfactant Résumé : During the preparation of emulsions, it is often desirable to dissolve highly viscous fluids, such as surfactants or other additives, into an aqueous phase. In this work we measure dissolution times for a non-Newtonian highly viscous surfactant (sodium laureth sulfate) in water using vessels of different diameter (D = 0.9 and D = 0.15 m) with high shear disk agitators (D/T = 1/3 and 0.62). To monitor the dissolution times, we use a volume averaged conductivity obtained by 3D electrical resistance tomography. We compare the validity of the method and highlight the difference between dissolution times for highly viscous fluids and blending times for tracers with the same viscosity as water. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900286s [article] Mixing and dissolution times for a cowles disk agitator in large-scale emulsion preparation [texte imprimé] / Thomas L. Rodgers, Auteur ; Michael Cooke, Auteur ; Flor R. Siperstein, Auteur . - 2009 . - pp. 6859–6868. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 14 (Juillet 2009) . - pp. 6859–6868 Mots-clés : Emulsions Viscous fluids Dissolution times Non-Newtonian highly viscous surfactant Résumé : During the preparation of emulsions, it is often desirable to dissolve highly viscous fluids, such as surfactants or other additives, into an aqueous phase. In this work we measure dissolution times for a non-Newtonian highly viscous surfactant (sodium laureth sulfate) in water using vessels of different diameter (D = 0.9 and D = 0.15 m) with high shear disk agitators (D/T = 1/3 and 0.62). To monitor the dissolution times, we use a volume averaged conductivity obtained by 3D electrical resistance tomography. We compare the validity of the method and highlight the difference between dissolution times for highly viscous fluids and blending times for tracers with the same viscosity as water. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900286s

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