METHOD FOR PURIFICATION OF AMINE SOLUTION GENERATED IN PROCESS OF GASES PURIFICATION FROM HYDROGEN SULPHIDE AND CARBON DIOXIDE Russian patent published in 2009 - IPC B01D19/04 B01D53/96 

FIELD: chemistry.

SUBSTANCE: purification of amine solution generated in the process of gases purification from hydrogen sulphide and carbon dioxide is carried out by extraction of foam-forming substances with polyphenyl ether with volume ratio "polyphenyl ether-amine solution" equal 1:50-300. The used polyphenyl ether is regenerated by mixing with methyl ethyl ketone in volume ratio equal respectively 1:1-3 with following deposition of foam-forming substances. Then the obtained mixture is separated in steam-stripping column for reuse in the purification process.

EFFECT: supporting of the admissible level of the foam-forming substances in the circulating amine solution, recovery of extraction properties of the polyphenyl ether and reuse of the latter in the process of amine solution purification.

1 dwg, 2 tbl