Patent ID: 6946419

Claim:
Process for regeneration of a catalyst plant for treatment of a flue gas from a gas turbine, the catalyst plant including a SCOSOx catalyst for removal of SO2 from the flue gas, and arranged downstream thereof, a SCONOx catalyst for removal of NOx from the flue gas, in which a regenerating gas including molecular hydrogen or hydrocarbons is conducted through the SCOSOx catalyst and the SCONOx catalyst, the process comprising the steps of: (a) extracting regenerating gas upstream of the SCOSOx catalyst and introducing the extracted regenerating gas between the SCOSOx catalyst and the SCONOx catalyst; and (b) introducing fresh regenerating gas downstream of the SCONOx catalyst and extracting the introduced fresh regenerating gas upstream of the SCOSOx catalyst, wherein step (a) and step (b) are performed simultaneously.