Pure ethylene oxide distillation process

Details Pure ethylene oxide distillation process Pure ethylene oxide distillation process

C - Chemistry, Metallurgy

07

D

C07D 301/32 (2006.01) B01D 3/32 (2006.01)

Patent

CA 2278574

In a pure ethylene oxide distillation process, an aqueous mixture containing ethylene oxide, formaldehyde and at least 5 % by weight water is supplied via an inlet to a distillation device with at least one distillation column at a height above the column bottom of at least 8 theoretical stages. The ethylene oxide is removed at the head of the column and a mixture is obtained at the bottom of the column with less than 5 % by weight ethylene oxide.

Selon ce procédé de distillation d'oxyde d'éthylène pur, un mélange aqueux qui contient de l'oxyde d'éthylène, du formaldéhyde et au moins 5 % en poids d'eau est introduit à travers une amenée dans un dispositif de distillation avec au moins une colonne de distillation. Le mélange aqueux est introduit à une hauteur située à au moins 8 étages théoriques au-dessus du bas de la colonne, l'oxyde d'éthylène est prélevé en haut de la colonne et un mélange qui contient moins de 5 % en poids d'oxyde d'éthylène est obtenu dans le bas de la colonne.

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