Effects of Flue-Gas Recirculation on NOx Production and Performance of Pulse Combustion Hot-Water Boilers

Two hot-water boilers with rated inputs of 147 and 220 kW had NO x emissions near 40 and 50 ppm (3% O 2 ), respectively, without flue-gas recirculation. With recirculation, NO x was reduced to 20-25 ppm for the larger boiler and to less than 20 ppm for the smaller one. Emissions of CO were not corre...

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Bibliographic Details
Published in:Combustion science and technology 1993-11, Vol.94 (1-6), p.447-468
Main Authors: MICHEL, Y., BELLES, F. E.
Format: Article
Language:English
Subjects:
Applied sciences
Boilers
CO emissions
combustor performance
emissions
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
flue-gas recirculation
pulse-combustion boilers
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Summary:Two hot-water boilers with rated inputs of 147 and 220 kW had NO x emissions near 40 and 50 ppm (3% O 2 ), respectively, without flue-gas recirculation. With recirculation, NO x was reduced to 20-25 ppm for the larger boiler and to less than 20 ppm for the smaller one. Emissions of CO were not correlated with NO x ; they depended on overall equivalence ratio and on design of the combustion chamber, but remained within the acceptable range of
ISSN:0010-2202
1563-521X
DOI:10.1080/00102209308935323