Low NOx nozzle tip for a pulverized solid fuel furnace

Donais, Richard E; Hellewell, Todd D; Lewis, Robert D; Richards, Galen H; Towle, David P

Title: Low NOx nozzle tip for a pulverized solid fuel furnace

Patent · Tue Apr 22 00:00:00 EDT 2014

OSTI ID:1129397

Donais, Richard E; Hellewell, Todd D; Lewis, Robert D; Richards, Galen H; Towle, David P

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.

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Research Organization:: Alstom Technology Ltd., Baden (Switzerland)

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-04NT42300

Assignee:: ALSTOM Technology Ltd (Baden, CH)

Patent Number(s):: 8,701,572

Application Number:: 12/393,439

OSTI ID:: 1129397

Resource Relation:: Patent File Date: 2009 Feb 26

Country of Publication:: United States

Language:: English

References (15)

Low load coal bucket McCartney, Michael S. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4252069 US Patent Document 4,252,069	patent	February 1981
Low load coal nozzle Kokkinos, Angelos https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4274343 US Patent Document 4,274,343	patent	June 1981
Nozzle tip for pulverized coal burner Chadshay, Roman https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4356975 US Patent Document 4,356,975	patent	November 1982
Method for low load operation of a coal-fired furnace McCartney, Michael S. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4434727 US Patent Document 4,434,727	patent	March 1984
Nozzle tip for pulverized coal burner McCartney, Michael S.; Chadshay, Roman; Erlacher, Richard F. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4520739 US Patent Document 4,520,739	patent	June 1985
Wood-waste burner system Connell, Ralph M.; Dawson, Edward O. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4566393 US Patent Document 4,566,393	patent	January 1986
Restrictor application for in line gas entrained solids redistribution Collette, Robert J. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4611543 US Patent Document 4,611,543	patent	September 1986
Powdered coal burner Sugiura, Saburo; Hayashi, Kiyohide; Kanada, Kenji https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4614159 US Patent Document 4,614,159	patent	September 1986
Split nozzle tip for pulverized coal burner Grusha, John https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4634054 US Patent Document 4,634,054	patent	January 1987
Integrated low NO.sub.x tangential firing system Rini, Michael J.; Hellewell, Todd D.; Towle, David P. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5315939 US Patent Document 5,315,939	patent	May 1994
Minimum recirculation flame control (MRFC) pulverized solid fuel nozzle tip Fong, Milton A.; Hellewell, Todd D.; Lewis, Robert Drennan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6089171 US Patent Document 6,089,171	patent	July 2000
Welded or nested sheet metal nozzle for injection pulverized coal for thermal power plant boilers Buridant, Daniel https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6189812 US Patent Document 6,189,812	patent	February 2001
Pulverized solid fuel nozzle tip with ceramic component Mann, Jeffrey S.; Nowak, Ronald https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6439136 US Patent Document 6,439,136	patent	August 2002
Multiple segment ceramic fuel nozzle tip Nowak, Ronald; Mann, Jeffrey S. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7216594 US Patent Document 7,216,594	patent	May 2007
Pulverized Solid Fuel Nozzle Assembly Briggs, JR., Oliver G.; Connolly, Kevin E.; Greco, Kevin A. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20070234938 US Patent Application 11/279123; 20070234938	patent-application	October 2007

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