Development of an Ultra Low NOx Burner for Natural Gas Oil and Pulverized Coal

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............................................................................................................... . .. 'r. ........ . ... . .. . . ..... .......................................................................................................... :::::: : '::::::::: :::: ::.::: ~:: :::::::::::::::: .:::::: : ::::::: :::::::::::::' :::: ' ::::'~:::::::::::::':::::'S'~ " :'-u'- :':"'m" -""--m::'-~'-~a:~"' ~:"~y-" : '~'::::~:~'~-C" " ' ''-o' ·-···n:·-.. ·. :t·---r·::"· ·l-· :)·:: -- ::~~~::::::~: :~:::::::::~:::::~~:~~ :::::::::: :::~::::~~: .:.:::: ~:::~:~.~::::~~:::~~. ..... ....... _.. " ....... _.. .......................................... _. .........._ ._ ...... ... __ .. . . - .. . -- .... _. ... - -- . . _.. .. ..... _----_._ ...•. _.. _ ...... _---_._-_ ... __.. _.. _-_._._--...- .. ................ -........ .... ................ ............. , .................................. ... ... ... ............................. ............. ...-..... ........ .. ...... ...-. ., ...... ., .. -.. -,,~ "'.... . . ....................... . ... ..... --.... ...-...........................................- .............. " ............................................. .....,.,.. ....................... ..-................ --... _.. ....... _... .......... ..-..--. .. _.. ... ...,..- • Measured Spatial Distributions of Flame Property Data in the Flames Show That Fuel-Rich Flame Core Stratification is Well Characterized by the Calculated Contours of Ri* = 1.0. • Experiments with 1.0 Mw RSFC Burner Flames with Combustion Air Preheat of 500°F Gave: N.G N.G/FGR (32%) No.2 Oil No.6 Oil Pulverized Coal NOx Emission Level 70 ppm 15 ppm 54 ppm 97 ppm 0.11-0.28 Ib/Million Btu