C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/80 (2006.01) B01D 3/14 (2006.01) B01D 3/36 (2006.01) C07B 41/00 (2006.01) C07D 301/12 (2006.01)
Patent
CA 2490151
The invention relates to a method for the continuous purification by distillation of methanol, used as a solvent in the synthesis of propylene oxide by the reaction of a hydroperoxide with propylene, with the simultaneous isolation of the methoxy propanols as an azeotropic mixture with water, in addition to the low and high boilers. Said method is characterised in that the solvent mixture that accumulates during the synthesis is separated in a dividing wall column.
La présente invention concerne un procédé de purification par distillation en continu du méthanol utilisé en tant que solvant pour la synthèse d'oxyde de propylène par réaction d'un hydroperoxyde avec du propylène, avec séparation simultanée des méthoxy propanols en tant qu'azéotropes avec de l'eau et des produits à bas et haut point d'ébullition. L'invention se caractérise en ce que le mélange de solvants résultant de la synthèse est séparé dans une colonne à paroi de séparation.
Bassler Peter
Goebbel Hans-Georg
Rudolf Peter
Teles Joaquim Henrique
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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