Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission

Kostiuk, Larry W; Cheng, Robert K

Title: Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission

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Abstract

An apparatus for enabling a burner to stably burn a lean fuel/air mixture. The burner directs the lean fuel/air mixture in a stream. The apparatus comprises an annular flame stabilizer; and a device for mounting the flame stabilizer in the fuel/air mixture stream. The burner may include a body having an internal bore, in which case, the annular flame stabilizer is shaped to conform to the cross-sectional shape of the bore, is spaced from the bore by a distance greater than about 0.5 mm, and the mounting device mounts the flame stabilizer in the bore. An apparatus for burning a gaseous fuel with low NOx emissions comprises a device for premixing air with the fuel to provide a lean fuel/air mixture; a nozzle having an internal bore through which the lean fuel/air mixture passes in a stream; and a flame stabilizer mounted in the stream of the lean fuel/air mixture. The flame stabilizer may be mounted in the internal bore, in which case, it is shaped and is spaced from the bore as just described. In a method of burning a lean fuel/air mixture, a lean fuel/air mixture is provided, and is directed in a stream; an annular eddy ismore » « less

Inventors:

Kostiuk, Larry W ^[1]; Cheng, Robert K ^[2]

Edmonton, CA
Kensington, CA

Issue Date:: 1996-01-01

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

OSTI Identifier:: 870412

Patent Number(s):: 5516280

Assignee:: Regents, University of California (Berkeley, CA)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23D - BURNERS

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F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23D - BURNERS
F23D14/74 - Preventing flame lift-off

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Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: apparatus; method; burning; lean; premixed; fuel; air; mixture; nox; emission; enabling; burner; stably; burn; directs; stream; comprises; annular; flame; stabilizer; device; mounting; internal; bore; shaped; conform; cross-sectional; shape; spaced; distance; mounts; gaseous; emissions; premixing; provide; nozzle; passes; mounted; described; provided; directed; eddy; created; ignited; gaseous fuel; mounting device; internal bore; apparatus comprises; air mixture; flame stabilizer; lean fuel; cross-sectional shape; apparatus comprise; mixed fuel; nox emission; premixed fuel; /431/239/

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                    Kostiuk, Larry W, and Cheng, Robert K. Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission.  United States: N. p., 1996. 
        Web.

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                    Kostiuk, Larry W, & Cheng, Robert K. Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission.  United States.

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                    Kostiuk, Larry W, and Cheng, Robert K. Mon .  
        "Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission".  United States.  https://www.osti.gov/servlets/purl/870412.

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@article{osti_870412,

  title        = {Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission},

  author       = {Kostiuk, Larry W and Cheng, Robert K},

  abstractNote = {An apparatus for enabling a burner to stably burn a lean fuel/air mixture. The burner directs the lean fuel/air mixture in a stream. The apparatus comprises an annular flame stabilizer; and a device for mounting the flame stabilizer in the fuel/air mixture stream. The burner may include a body having an internal bore, in which case, the annular flame stabilizer is shaped to conform to the cross-sectional shape of the bore, is spaced from the bore by a distance greater than about 0.5 mm, and the mounting device mounts the flame stabilizer in the bore. An apparatus for burning a gaseous fuel with low NOx emissions comprises a device for premixing air with the fuel to provide a lean fuel/air mixture; a nozzle having an internal bore through which the lean fuel/air mixture passes in a stream; and a flame stabilizer mounted in the stream of the lean fuel/air mixture. The flame stabilizer may be mounted in the internal bore, in which case, it is shaped and is spaced from the bore as just described. In a method of burning a lean fuel/air mixture, a lean fuel/air mixture is provided, and is directed in a stream; an annular eddy is created in the stream of the lean fuel/air mixture; and the lean fuel/air mixture is ignited at the eddy.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1996},

  month        = {1}

}

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