Combustion – Process of combustion or burner operation – In a porous body or bed – e.g. – surface combustion – etc.
Patent
1992-10-16
1997-09-16
Dority, Carroll B.
Combustion
Process of combustion or burner operation
In a porous body or bed, e.g., surface combustion, etc.
431328, F23D 340
Patent
active
056673744
ABSTRACT:
A premix burner has a mixing plenum, a mesh flametrap and a ceramic honeycomb arranged in series. The mixing plenum has inner and outer chambers, with a mixing nozzle for introducing a gaseous fuel concentrically located in the inner chamber. The burner is operated with either high excess air or flue gas recirculation to produce a low temperature flame at a flame face defined by the honeycomb. The thorough premixing of air and fuel ensures a flame with homogeneous air-to-fuel ratios across the flame face, producing low NOx levels. The honeycomb and flametrap also function as flame arrestors to prevent burner flashback. A method for attaining a low temperature, low NOx flame using excess air, with or without flue gas recirculation, is also disclosed.
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Nutcher Peter B.
Waldern Peter J.
Dority Carroll B.
Process Combustion Corporation
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