Patent ID: 9314734
Filing Date: 2016-04-19
CPC Classification: B01D,Y02A,Y02C

Claim Text:
1. A method for recovering a solvent from a decarbonated flue gas in a water wash section of an absorption column, the decarbonated flue gas having had carbon dioxide absorbed and removed by vapor-liquid contact with a carbon dioxide absorbing solution containing the solvent in the absorption column, the method comprising: bringing a water stream substantially free of the solvent into counter-current contact with the decarbonated flue gas in an emission control section of the absorption column to recover the solvent from the decarbonated flue gas to form a solvent containing wash water and a reduced solvent containing flue gas; and bringing a. cooled wash water into counter-current contact with the reduced solvent containing flue gas in a flue gas cooling section of the absorption column to cool the reduced solvent containing flue gas, thereby forming a cooled flue gas and a used wash water; and collecting the used wash water with a collection device disposed between the flue gas cooling section and the emission control section; removing the collected used wash water from the collection device; cooling at least a portion of the removed used wash water to form cooled wash water; and returning at least a portion of the cooled wash water to the flue gas cooling section.