Low NOx combustion method and apparatus

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United States of America Patent

PATENT NO 9909755
SERIAL NO

13833359

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Abstract

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A low NOx combustion method includes steps of injecting reactants into a combustion chamber. A primary reactant stream, including fuel and combustion air premix, is injected from a premix burner port into the combustion chamber. A staged fuel stream is injected into the combustion chamber from a staged fuel injector port adjacent to the premix burner port. A stream of recirculated flue gas is injected into the combustion chamber from a flue gas injector port that is adjacent to the premix burner port and adjacent to the staged fuel injector port. In this manner, the stream of recirculated flue gas is injected into the combustion chamber unmixed with the primary reactant stream and unmixed with the staged fuel stream.

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Patent Owner(s)

Patent OwnerAddress
FIVES NORTH AMERICAN COMBUSTION INC4455 EAST 71ST STREET CLEVELAND OH 44105-5600

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cain, Bruce E Akron, US 19 150
Hannum, Mark C Hudson, US 12 195
Nowakowski, John J Richfield, US 20 250
Robertson, Thomas F Medina Township, US 49 393

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