| 摘要 |
PCT No. PCT/FR94/01249 Sec. 371 Date Aug. 7, 1995 Sec. 102(e) Date Aug. 7, 1995 PCT Filed Oct. 27, 1994 PCT Pub. No. WO95/11876 PCT Pub. Date May 4, 1995An amount of water is added to a glycol solution to be purified to enable segregation of the resulting mixture into a hydrocarbon phase and a glycol phase. The hydrocarbon phase is separated from the glycol phase and said glycol phase is desalted, e.g. by electrodialysis, to give a desalted and substantially hydrocarbon-free glycol solution which is then concentrated by steam stripping. The method is useful for purifying waste glycol solutions resulting from oil or gas production effluent processing using glycols, and in particular from a gas hydrate inhibition treatment or natural gas dehydration.
|
