Nitrogen pollutant formation in a pulverized coal combustor: effect of secondary steam swirl

Journal Article · Thu Jul 01 00:00:00 EDT 1982 · AIChE J.; (United States)

DOI:https://doi.org/10.1002/aic.690280408· OSTI ID:6683866

Harding, N S

Concentrations of NO, NH/sub 3/ and HCN, together with particle burnout and gas composition were measured during combustion of a bituminous coal. Control of incoming secondary gas swirl level and overall stoichiometric ratio led to significant reductions in nitrogen oxide pollutant concentration. In situ measurement showed that coal particles were confined near the reaction centre during rapid particle reaction. This took place in a locally fuel-rich environment, producing near-quantitative conversion of fuel nitrogen to NH/sub 3/ and HCN, with some NO. Subsequent gas phase reactions of these nitrogen species were identified as important in establishing the ultimate NO concentration.

• OSTI ID: 6683866
• Journal Information: AIChE J.; (United States), Vol. 28:4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AMMONIA
SYNTHESIS
BITUMINOUS COAL
COMBUSTION PRODUCTS
HYDROCYANIC ACID
NITRIC OXIDE
CHEMICAL REACTIONS
COMBUSTION
PARTICLES
POLLUTANTS
QUANTITY RATIO
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
CYANIDES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
014000* - Coal
Lignite
& Peat- Combustion
010800 - Coal
Lignite
& Peat- Waste Management