Alkylene oxide purification columns

Details Alkylene oxide purification columns Alkylene oxide purification columns

B - Operations, Transporting

01

D

B01D 3/14 (2006.01) B01D 3/20 (2006.01) B01D 3/22 (2006.01) B01D 3/42 (2006.01) C07D 301/32 (2006.01)

Patent

CA 2731944

Embodiments of the present disclosure provide processes, columns, and systems for removing acetaldehyde from alkylene oxide in a feed stream (108) and for providing an alkylene oxide-water stream (120) that can be directly transferred to a glycol reaction process. The alkylene oxide purification column (100) includes a first section (102) to convert a feed stream into a gas phase portion (111) and a liquid phase portion (122) and a second section (104) located in the column above the first section (102) to separate alkylene oxide from the acetaldehyde, water, and other impurities that enter the second section (104) from the first section.

Des modes de réalisation de la présente invention concernent des processus, des colonnes et des systèmes permettant déliminer lacétaldéhyde contenu dans de loxyde dalkylène dans un flux dalimentation (108), et dobtenir un flux oxyde dalkylène-eau (120) pouvant être transféré directement vers un processus de réaction de glycol. La colonne de purification doxyde dalkylène (100) comprend : une première section (102) destinée à transformer un flux dalimentation en une partie phase gazeuse (111) et une partie phase liquide (112); et une deuxième section (104) située dans la colonne au-dessus de la première section (102), destinée à séparer loxyde dalkylène de lacétaldéhyde, de leau et des autres impuretés qui pénètrent dans la deuxième section (104) à partir de la première section.

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