Nitrous oxide formation and destruction in lean, premixed combustion

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Combustion and Flame; (USA)

DOI:https://doi.org/10.1016/0010-2180(90)90102-W· OSTI ID:6545143

Martin, R J; Brown, N J ^[1]

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1. Lawrence Berkeley Lab., CA (USA). Applied Science Div.

Concentration profiles of N{sub 2}O, NO, and N{sub 2} from atmospheric pressure, flat-flame burner experiments are presented. Axial profiles of species and temperature are described for CH{sub 4}-air and H{sub 2}-O{sub 2}-Ar flames doped with either NH{sub 3}, NO, or N{sub 2}O. Species concentrations were determined by microprobe sampling and direct analysis by gas chromatography or chemiluminescence analysis, for flames ranging in temperature from 1300 to 2000 K. Burner surface temperatures were also estimated for these flames, using heat transfer analysis and an optical method. Nitrogen-atom balances were achieved in each of the H{sub 2}-O{sub 2}-Ar flames to within experimental error and better than 6%. Axial profiles of N{sub 2}O were similar for all flames. At sampling locations nearest to the burner (0.5-1.0 mm), N{sub 2}O concentrations were highest. Concentrations decreased monotonically in the downstream direction, with N{sub 2}O destruction essentially complete in the postflame region (height greater than 3 mm) for all flames except the one at the lowest temperature (1300 K).

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6545143
• Journal Information: Combustion and Flame; (USA), Journal Name: Combustion and Flame; (USA) Vol. 80:3; ISSN CBFMA; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

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09 BIOMASS FUELS
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
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42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR
ALKANES
AMMONIA
BURNERS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMILUMINESCENCE
CHROMATOGRAPHY
COMBUSTION KINETICS
COMBUSTION PRODUCTS
DISPERSIONS
ELEMENTS
FLAME PROPAGATION
FLAMES
FLUIDS
GAS CHROMATOGRAPHY
GASES
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
KINETICS
LUMINESCENCE
METHANE
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES