Patent ID: 8741239
Filing Date: 2014-06-03
Classification: B01D,F02C,Y02E

Abstract:
1. A method for arranging catalytic elements for treating emissions in a flow of exhaust gases from a gas turbine, comprising: disposing a carbon monoxide (CO) oxidation catalyst at a location downstream from an exhaust duct of the gas turbine between the exhaust duct and a high pressure heat exchanger in a flow of exhaust gases for limiting NO2 production from NO by the CO oxidation catalyst by placement of the CO oxidation catalyst directly at the exhaust outlet of the exhaust duct without at least one of an intervening heating element and an intervening cooling element; disposing an ammonia injection grid (AIG) downstream from the CO oxidation catalyst and the high pressure heat exchanger within the exhaust gas flow; disposing a mixing chamber downstream the from the AIG; and disposing a selective catalytic reduction (SCR) catalytic element downstream from the mixing chamber.