Patent ID: 6865881

Claim:
A system for reducing the concentration of nitrogen oxides in the exhaust gases generated by the combustion of fossil fuels in a combustion device having an air intake stream for supplying air to the combustion device and an effluent stream for discharging the exhaust gases from the combustion device, the system comprising: (a) a bypass conduit extending between the air intake stream and the effluent stream, wherein the bypass conduit is configured to draw a portion of the air flow from the air intake stream; (b) an injector in communication with the bypass conduit and the effluent stream for receiving the bypass air flow and for injecting the bypass air flow into the effluent stream; (c) a feed conduit in communication with the injector for introducing a fluid reducing agent for nitrogen oxides into the injector, wherein the bypass air flow through the injector atomizes the fluid reducing agent in the injector and the injector is configured for injecting the atomized agent with the bypass air flow into the effluent stream; and (d) a source of the fluid reducing agent communicating with the feed conduit.