Importance

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Abstract

A damper vane assembly for controlling the flow of flue gas between a flue gas pass of a combustion vessel which generates flue gas and a selective catalytic reactor operable to catalytically treat flue gas in a combustion system is provided. The damper vane assembly includes a first turning vane having a curved extent and a second turning vane with a curved extent. The first turning vane is moveable between a blocking position in which it blocks communication between the combustion vessel and the selective catalytic reactor and a flow guiding position in which the curved extent of the first turning vane guides flue gas from the flue outlet to the selective catalytic reactor. The second turning vane is moveable between a blocking position in which it blocks communication between the selective catalytic reactor and the flue gas outlet and a flow guiding position in which the curved extent of the second turning vane guides flue gas from the selective catalytic reactor to the flue gas outlet.

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First Claim