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Low NOx nozzle tip for a pulverized solid fuel furnace

United States Patent

April 22, 2014
View the Complete Patent at the US Patent & Trademark Office
A nozzle tip [100] for a pulverized solid fuel pipe nozzle [200] of a pulverized solid fuel-fired furnace includes: a primary air shroud [120] having an inlet [102] and an outlet [104], wherein the inlet [102] receives a fuel flow [230]; and a flow splitter [180] disposed within the primary air shroud [120], wherein the flow splitter disperses particles in the fuel flow [230] to the outlet [104] to provide a fuel flow jet which reduces NOx in the pulverized solid fuel-fired furnace. In alternative embodiments, the flow splitter [180] may be wedge shaped and extend partially or entirely across the outlet [104]. In another alternative embodiment, flow splitter [180] may be moved forward toward the inlet [102] to create a recessed design.
Donais; Richard E. (West Suffield, CT), Hellewell; Todd D. (Windsor, CT), Lewis; Robert D. (Cromwell, CT), Richards; Galen H. (Tremonton, UT), Towle; David P. (Simsbury, CT)
ALSTOM Technology Ltd (Baden, CH)
12/ 393,439
February 26, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The U.S. Government has rights in this invention pursuant to Contract No. DE-FC26-04NT42300 awarded by the U.S. Department of Energy.