The influence of near burner region aerodynamics on the formation and emission of nitrogen oxides in a pulverized coal-fired furnace

Journal Article · Tue Dec 01 00:00:00 EST 1992 · Combustion and Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(92)90062-T· OSTI ID:6945429

Abbas, T; Costen, P; Lockwood, F C ^[1]

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1. Imperial Coll. of Science and Technology, London (United Kingdom). Dept. of Mechanical Engineering

This paper reports that detailed measurements have been performed for two distinct pulverized-coal-fired burners in a large-scale laboratory furnace. Comparative in-flame data are archived and include gas temperature, O[sub 2], CO concentration, and an inventory of stable fuel nitrogen species and solids (HCN, NH[sub 3], N[sub 2]O, NO, nitrogen release, mass flux, and particle burnout). A significant decrease in the NO concentration in the near burner region and a substantial decrease in the furnace exit values are observed when the central tube from a single annular orifice burner jet (normally the location of a gas or oil burner for light-up purposes) is replaced with a single central orifice burner jet of same cross-sectional area. The latter burner exhibits the delayed combustion phenomena normally associated with a tangentially fired system. The particle burnout remains unaffected due to the longer particles' residence time in the all-important oxygen lean internal recirculation zone.

• OSTI ID: 6945429
• Journal Information: Combustion and Flame; (United States), Vol. 91:3/4; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
COMBUSTION
NITROGEN OXIDES
EMISSION
PULVERIZED FUELS
AERODYNAMICS
BURNERS
BURNOUT
CARBON MONOXIDE
CYANIDES
FLAMES
FURNACES
GASES
HYDROGEN COMPOUNDS
LABORATORIES
NITROGEN
OXYGEN
PRODUCTION
TEMPERATURE DISTRIBUTION
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ENERGY SOURCES
FLUID MECHANICS
FLUIDS
FOSSIL FUELS
FUELS
MATERIALS
MECHANICS
NITROGEN COMPOUNDS
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
014000* - Coal
Lignite
& Peat- Combustion
010900 - Coal
Lignite
& Peat- Environmental Aspects