Control of air flow in a burner for a tangentially fired boiler

Details Control of air flow in a burner for a tangentially fired boiler Control of air flow in a burner for a tangentially fired boiler

F - Mech Eng,Light,Heat,Weapons

23

M

158/17

F23M 9/08 (2006.01) F23C 7/00 (2006.01) F23C 7/02 (2006.01)

Patent

CA 1086632

ABSTRACT OF THE DISCLOSURE A fuel admission assembly for a tangentially fired furnace that utiltzes oil, gas, or other utility grade fuels. The assembly disclosed has the ability to achieve a positive control of the air flow through a specially designed swirler. Because of this unique feature of its design, this assembly will permit efficient tangential boiler operation at 5% excess air or less over a fuel turndown ratio of at least 3 to 1 on each assembly. At the same time, it will not produce unacceptable levels of noxious emissions such as oxides of nitrogen, carbonaceous soot or sulfur smuts over its full operating range. Finally, it requires no additional fan head (windbox pressure drop). -1-

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