Extractive distillation of 2-methoxy-2-methylpropane + ethanol using 1-butanol as entrainer: Equilibria and simulation
✍ Scribed by Alberto Arce; Eva Rodil; Ana Soto
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 587 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0008-4034
No coin nor oath required. For personal study only.
✦ Synopsis
Isobaric (101.32 kPa) liquid-vapour equilibrium data for the system I-butanol + ethanol + 2-methoxy-2-methylpropane (MTBE) were determined and fitted with Wilson, NRTL and UNIQUAC equations, and their prediction by various group contribution methods (ASOG and modified and unmodified UNIFAC methods) was examined. The NRTL equation was used to calculate, by simulation, the influence of plate number and entrainedfeed flow ratio on the quantity and composition of the distillate afforded by extractive distillation of azeotropic MTBE + ethanol using 1 -butanol as the entrainer. The quantity of distillate and its MTBE content both increased with plate number, and the quantity of distillate also increased with entrainedfeed flow rate ratio. Des donnees d'equilibre liquide-vapeur isobares (101,32 kPa) pour le systeme I-butanol + ethanol + 2-methoxy-2methylpropane (MTBE) ont ete determinees et calees aux equations de Wilson, NRTL et UNIQUAC, et leur prediction par diverses methodes de contribution des groupes (ASOG et methodes UNIFAC modifiees et non modifiees) a ete examinee. On a employe I'equation NRTL afin de calculer, par simulation, l'influence du nombre de plateaux et du rapport ecoulement d'entrainementlecoulement d'alimentation sur la quantite et la composition du distillat permise par la distillation extractive de MTBE azeotrope + ethanol a l'aide de I-butanol c o m e agent d'entrainement. La quantite de distillat et sa teneur en MTBE augmentent toutes deux avec le nombre de plateaux, et la quantite de distillat augmente egalement avec le rapport ecoulement d'entrainementlecoulement d'alimentation.