PROCESSO PER IL RECUPERO DI OSSIDO DI ETILENE CONTENENTE BASSI LIVELLI DI IMPURITA' ALDEIDICHE

摘要

A process for the recovery of ethylene oxide containing low levels of aldehydic impurities from an impure aqueous ethylene oxide solution containing the same is provided in which the impure solution is treated in a novel multi-stage, countercurrent distillation zone for improved separation of said aldehydic impurities and recovery of an ethylene oxide-containing product stream having the desired low concentration of aldehydic impurities.