| 摘要 |
<p>A method and apparatus for reducing NOx emissions in a gas burner in which the burner (1) includes a burner supply for supplying fuel gas and primary air (a) to the furnace and projecting the fuel gas into the furnace, a secondary air supply for supplying secondary air (b) to the burner, and a recirculating device for mixing the secondary air with the spent gases (c) inside the furnace, which is then recirculated and combusted to reduce NOx gases. The method of the invention includes the steps of supplying fuel gas and primary air (a) to the furnace, projecting the fuel gas into the furnace, combusting the fuel gas and primary gas (a) to produce spent gases (c), supplying secondary air (b) to the furnace, mixing the secondary air (b) with the spent gases inside the furnace to produce diluted air (d), and recirculating and combusting the diluted air (d) with the fuel gas and primary air (a) to reduce NOx emissions. <IMAGE> <IMAGE></p> |
