Method for purifying glycol used as a hydrate inhibitor

摘要

The invention concerns a purification method comprising: - supplying a stream comprising a glycol, monovalent ions and multivalent ions; - treating said stream with ion exclusion chromatography comprising: ⋅ injecting the stream into a chromatographic unit comprising a stationary ion-exchange phase; ⋅ injecting an eluent into the chromatographic unit; ⋅ collecting a fraction exiting the chromatographic unit; the collected fraction being enriched in glycol and depleted in monovalent ions and multivalent ions relative to the stream. The invention also concerns a facility suitable for implementing said method, and the application of same in the regeneration of a hydrate inhibitor.