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Additional pilot plant measurements with incorporation of reflux for the fractionation of wax derivatives with supercritical propane / Cara E. Schwarz in Industrial & engineering chemistry research, Vol. 51 N° 51 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 51 (Décembre 2012) . - pp. 4462–4467 Titre : Additional pilot plant measurements with incorporation of reflux for the fractionation of wax derivatives with supercritical propane Type de document : texte imprimé Auteurs : Cara E. Schwarz, Auteur ; Izak Nieuwoudt, Auteur ; Johannes. H. Knoetze, Auteur Année de publication : 2012 Article en page(s) : pp. 4462–4467 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Wax  Derivatives Résumé : Previous studies have shown that supercritical propane can be used to fractionate waxlike alcohol ethoxylates according to the number of ethylene oxide units and that the column temperature, pressure, and solvent to feed ratio influence the selectivity and overheads to feed ratio. Additional pilot plant experiments were conducted to obtain the effect of various process variables. The effect of reflux and the degree thereof as well as the combined influence of the column temperature, the column pressure, the solvent to feed ratio, and the use of reflux were investigated to qualitatively determine how the optimum operating conditions should be selected. To obtain a higher selectivity, lower temperatures and pressures should be used. Furthermore, the solvent to feed ratio as well as the use of reflux can be varied to optimize the separation according to the desired ethylene oxide fractionation. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900397t [article] Additional pilot plant measurements with incorporation of reflux for the fractionation of wax derivatives with supercritical propane [texte imprimé] / Cara E. Schwarz, Auteur ; Izak Nieuwoudt, Auteur ; Johannes. H. Knoetze, Auteur . - 2012 . - pp. 4462–4467. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 51 (Décembre 2012) . - pp. 4462–4467 Mots-clés : Wax  Derivatives Résumé : Previous studies have shown that supercritical propane can be used to fractionate waxlike alcohol ethoxylates according to the number of ethylene oxide units and that the column temperature, pressure, and solvent to feed ratio influence the selectivity and overheads to feed ratio. Additional pilot plant experiments were conducted to obtain the effect of various process variables. The effect of reflux and the degree thereof as well as the combined influence of the column temperature, the column pressure, the solvent to feed ratio, and the use of reflux were investigated to qualitatively determine how the optimum operating conditions should be selected. To obtain a higher selectivity, lower temperatures and pressures should be used. Furthermore, the solvent to feed ratio as well as the use of reflux can be varied to optimize the separation according to the desired ethylene oxide fractionation. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900397t