PROCEDURE FOR OBTAINING ELEVADA PURITY MONOETHYLENE GLYCOL.

摘要

Process for obtaining by distillation of monoethylene glycol of high purity from the product of hydrolysis of ethylene oxide by elimination of water under pressure, elimination of water under vacuum and then distillation in pure state, according to which an aqueous stream is discharged into the vacuum water removal, containing monoethylene glycol in a concentration below 1% by weight, medium boiling products and low boiling products and is discharged, if necessary after further processing, characterized in that the removal of Vacuum water is carried out in a column for the removal of water in vacuum (5) and because the aqueous stream is discharged in the form of a side stream from the column for the removal of water in vacuum (5), or because The elimination of the water in vacuum takes place in two columns for the elimination of the water in vacuum (5, 10) and because the gas stream is scharge in the form of a head current of the second column for the removal of water in a vacuum (10).