Formation and destruction of nitrous oxide in lean, premixed combustion

Conference · Sat Aug 01 04:00:00 EDT 1987

OSTI ID:5951470

Martin, R J; Brown, N J

Nitrous oxide is formed in lean CH/sub 4//air and H/sub 2//air flames doped with various nitrogen compounds, but it does not survive into the post flame region. Nitrous oxide concentration was found to depend inversely upon final flame temperature and equivalence ratio and directly upon nitrogen compound concentration. In decreasing order of observance of early-N/sub 2/O, four nitrogen-containing dopants can be ranked: N/sub 2/O, NH/sub 3/, NO and N/sub 2/. Nitrous oxide profiles were similar in CH/sub 4//air and H/sub 2//air flames. Radial profile measurements showed increased amounts of N/sub 2/O existing near the burner edge. Comparison between calculated NO and N/sub 2/O profiles and those measured in an H/sub 2//air flame showed that NO was satisfactorily predicted by the model, but that significant difficulties exist with the N/sub 2/O kinetics.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5951470
• Report Number(s): LBL-23952; CONF-871118-6; ON: DE88001390
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKANES
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PRODUCTS
ELEMENTS
FLAMES
FLUIDS
GASES
HYDROCARBONS
HYDROGEN
METHANE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
YIELDS