METHOD OF MONOETHYLENE GLYCOL REGENERATION Russian patent published in 2014 - IPC C07C29/80 C07C29/10 C07C29/12 C07C31/20 

FIELD: chemistry.

SUBSTANCE: invention relates to method of monoethylene glycol regeneration from discharged catalyst flow. Method includes the following stages: a) combination of discharged flow and, optionally, additional discharged flows, which contain monoethylene glycol, with flow of heavy admixtures, which contains, at least, 40 wt % of diethylene glycol, with obtaining of combined flow; b) optionally, dehydration of combined flow and c) supply of combined flow from stage (a) or stage (b) to distillation column and discharge of the first monoethylene glycol-containing flow and second, diethylene glycol-containing flow from distillation column. Also described is method of monoethylene glycol production, where ethylene oxide reacts in presence of one or more homogeneous catalysts in reaction zone, optionally via ethylene carbonate, with obtaining monoethylene glycol. One or more of homogeneous catalysts are separated from the flow of product, which represents glycol, and is returned to reaction zone by catalyst recyclisation flow. Discharged catalyst flow, which contains monoethylene glycol, is taken from catalyst recyclisation flow.

EFFECT: method contributes to increase of product output.

8 cl, 2 dwg