PROCESO PARA LA RECUPERACION POR DESTILACION DE MONOETILENGLICOL DE ALTA PUREZA A PARTIR DEL PRODUCTO DE HIDROLISIS DEL OXIDO DE ETILENO.

摘要

A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.