1
John Smith Zink, Hershel E Goodnight: Low nox burner. John Zink Company, Head Johnson & Chafin, January 25, 1977: US04004875 (89 worldwide citation)

An improved burner for both liquid and gaseous fuels in which the combustion air is divided into at least two parts, comprising primary and secondary air. The primary air, which is insufficient to completely burn the fuel, creates a flame zone in which there is a deficiency of air, which produces qu ...


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Darton J Zink, Rex K Isaacs, John McDonald, Tim Kirk, Cody L Little: Burner and method for induction of flue gas. Zeeco, Fellers Snider Blankenship Bailey & Tippens P C, Dennis D Brown, March 2, 2010: US07670135 (62 worldwide citation)

A low NOx burner and method wherein (a) combustion air flows through the interior of the burner in a manner effective for drawing an amount of inert flue gas diluent from the fired heating system into the combustion air stream, preferably via one or more induction channels provided through the burne ...


4
John J Van Eerden, Chad F Gottschlich, Wayne C Gensler: Low NOx burner. Selas Corporation of America, Austin R Miller, September 3, 1991: US05044931 (56 worldwide citation)

A gaseous fuel burner provides substantial reduction of nitrogen oxide content in the combustion gases by creating a screen of premix combustion products, by introducing secondary gaseous fuel for admixture with the screen, and by exposing secondary air to the mixture for reaction with the secondary ...


5
Robert D Reed: Low NOx burner. John Zink Company, Head & Johnson, March 24, 1981: US04257763 (46 worldwide citation)

A low NOx burner for a furnace operating under natural draft in which primary and secondary combustion air are provided to a first burning zone, in which either or both liquid and gaseous fuel can be used. Less than stoichiometric air is supplied in the primary burning zone and tertiary combustion a ...


6
Robert D Reed, Richard R Martin, Hershel E Goodnight: Low NOX burner. John Zink Company, Head & Johnson, August 31, 1982: US04347052 (45 worldwide citation)

A fluid fuel burner system for minimum production of NOX under varying rates of fuel firing and varying rates of combustion air or oxidant supply, which comprises a fuel burner including means for burning liquid and gaseous fuel. Liquid fuels are burned in an axial burner tube, and the gaseous fuels ...


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Donald P Moreland: Staged air, low NOX burner with internal recuperative flue gas recirculation. Gas Research Institute, Dick and Harris, May 9, 1995: US05413477 (39 worldwide citation)

A gas-fired burner incorporating an air driven jet pump for mixing air, fuel, and recirculated flue gas with reduced heat loss from the recirculated flue gas is disclosed. The burner is configured for the staged introduction of combustion air to provide a fuel-rich combustion zone and a fuel-lean co ...


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Howard Seemann, Chad F Gottschlich: Low NOX burner. Selas Corporation of America, Austin R Miller, October 17, 1989: US04874310 (36 worldwide citation)

A controlled primary air inspirating gas burner is provided with a fuel inspirating jet and an induced primary air passageway, with a means forming a separate control primary air passageway, together with means for controlling the introduction of control primary air. The content of nitrogen oxides i ...


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Gregory Lynn Johnson: System and method for reduced NOx combustion. Shell Oil Company, Mark A Smith, November 18, 1997: US05688115 (34 worldwide citation)

A method is disclosed for reducing NOx pollutants in the combustion of hydrocarbon fuels in a two stage burner. A first stage of combustion is established and maintained passing a stream of combustion air and first stage products of combustion down a centerline of the burner to a second stage downst ...


10
Mahendra Ladharam Joshi, Kevin Ray Heier, Aleksandar Georgi Slavejkov: Ultra low NOx burner for process heating. Air Products and Chemicals, Keith D Gourley, August 10, 2004: US06773256 (29 worldwide citation)

An ultra low NOx burner for process heating is provided which includes a fluid based flame stabilizer which provides a fuel-lean flame at an equivalence ratio in the range of phi=0.05 to phi=0.3 and fuel staging lances surrounding the flame stabilizer in circular, flat, or load shaping ...