Process for the purification of a glycol solution
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United States of America Patent
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Oct 6, 1998
Grant Date -
N/A
app pub date -
Aug 7, 1995
filing date -
Oct 29, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An 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.
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