| Titre : | Entrainer screening for separation of isoparaffins and naphthenes by extractive distillation (2009) |
| Auteurs : | Sifang Li, Auteur ; Hai Liu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 11, Juin 2009) |
| Article en page(s) : | pp. 5427–5430 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Entrainer screening Isoparaffins Naphthenes Extractive distillation |
| Résumé : | In the entrainer screening for separation of isoparaffins and naphthenes (C9−C14) by extractive distillation of D60 oil, various single entrainers and mixed entrainers were used and studied. Sulfolane was the most selective entrainer as a single entrainer was applied and the relative volatility of isoparaffins to naphthenes reached 1.648 as the sulfolane to oil ratio was 5:1. Both mixed entrainers of sulfolane + triethylene glycol and sulfolane + dimethyl phthalate show good synergistic effect, whereas a mixed entrainer of triethylene glycol and dimethyl phthalate shows little synergistic effect. The most selective mixed entrainer was a mixture of 50 vol % of sulfolane and 50 vol % of dimethyl phthalate, the relative volatility of isoparaffins to naphthenes reached 1.835. Results from the experiment in an extractive distillation column show that isoparaffins concentration of more than 95 wt % in the isoparaffins product and naphthenes concentration of more than 94 wt % in the naphthenes product are achieved. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie900267m |
