METHOD OF COMMERCIAL TRIETHYLENE GLYCOL REGENERATION Russian patent published in 2014 - IPC C07C43/13 C07C41/58 B01D53/26 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to a method of commercial triethylene glycol (TEG) regeneration by evaporation from a basic volume of moisture-containing TEG and removal of admixtures, simultaneously collected by the said TEG, and water from remaining, specially discharged from the gas drying process, volume of TEG, by extraction of admixtures by additionally added water with intensive mixing of the said mixture with the following settling, pouring out of the TEG settled from mixture, filtering and regulated dosed return of the said, poured out after settling, TEG into the basic volume, supplied to water evaporation. Before the stage of admixture extraction not less than one and a half fold volume of water and a cyclohexane mixture in their volume ratio two to one respectively is introduced into the volume of TEG, specially removed from circulation.

EFFECT: method makes it possible to separate admixtures effectively and economically with regenerated TEG settling obtaining a practically dehydrated absorbent for its return into the process of natural gas drying.

1 dwg, 1 tbl