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An apparatus and method for high velocity injection of a stream of fluid fuel into a stream of NOx containing combustion effluents downstream of a primary combustion zone, without the use of recirculated flue gas or other carrier gas. The apparatus includes a fuel introducing member that has a fuel

An apparatus and method for high velocity injection of a stream of fluid fuel into a stream of NOx containing combustion effluents downstream of a primary combustion zone, without the use of recirculated flue gas or other carrier gas. The apparatus includes a fuel introducing member that has a fuel receiving end for receiving fluid fuel from a fuel source and a fuel injection end for injecting the fluid fuel into the stream of combustion effluents. A fuel passage is in fluid communication with the fuel receiving end and the fuel injection end of the fuel introducing member. A means for increasing the velocity of the fluid fuel, without the need of a carrier gas, is associated with the fuel introducing member.

대표청구항 ▼

1. A method of reducing NOx in a combustion furnace and the like by gas reburn comprising the steps of:providing a source of combustion effluents containing NOx; providing a reburn zone downstream of the source of combustion effluents; providing a source of fluid reburn fuel; providing at least one

1. A method of reducing NOx in a combustion furnace and the like by gas reburn comprising the steps of:providing a source of combustion effluents containing NOx; providing a reburn zone downstream of the source of combustion effluents; providing a source of fluid reburn fuel; providing at least one high velocity reburn fuel injector in fluid communication with the source of the reburn fuel, the high velocity reburn fuel injector operative without a carrier gas, the high velocity reburn fuel injector including: a fuel introducing member having a fuel receiving member for receiving fluid reburn fuel from the source of reburn fuel, a fuel injection end disposed downstream of the source of combustion effluents containing NOx, and a fuel passage that is in fluid communication with the fuel receiving member and the fuel injection end; and introducing a substantially continuous jet of reburn fuel from the high velocity fluid injector into the reburn zone.