Patent ID: 6174348
Filing Date: 2001-01-16
Classification: B01D,Y02C

Abstract:
A method for regenerating a chemical solvent comprising:(A) contacting feed gas comprising acid gas with chemical solvent, and passing acid gas from the feed gas into the chemical solvent to produce loaded chemical solvent;(B) flash vaporizing some of the acid gas from the loaded chemical solvent to produce partially loaded chemical solvent, and heating the partially loaded chemical solvent to produce heated partially loaded chemical solvent;(C) passing the heated partially loaded chemical solvent in countercurrent mass transfer contact with nitrogen gas and stripping acid gas from the heated partially loaded chemical solvent into the nitrogen gas to produce acidified stripping gas and regenerated chemical solvent;(D) passing acidified stripping gas in contact with the partially loaded chemical solvent; and(E) recovering regenerated chemical solvent.