Patent ID: 8021635

Claim:
A method for operating a combustion system comprising at least two injection devices, at least one downstream reaction parameter probe, and at least one controller in communication with the at least two injection devices and the at least one probe, wherein the at least two injection devices each comprise an exterior injection duct for injecting at least one gas at high-velocity into the reactor space, at least one interior injector for injecting at least one reagent and at least one humidifying agent into the reactor space; wherein the at least one interior injector is positioned coaxially inside the exterior injection duct for injecting, mixing, and dispersing the at least one reagent and the at least one humidifying agent in the reactor space, the method comprising the steps of: sampling a reaction parameter; selecting at least one injection device for injecting a reagent for affecting a chemical reaction within the reactor to produce a reduction in at least one compound in an effluent; and injecting a reagent and a humidifying agent through the interior injector of the at least one selected injection device.