Nitrogen oxide formation from Australian coals
The evolution of fuel nitrogen during devolatilization and the formation of NO/sub x/ during combustion were studied for two Australian coals in crucible, thermobalance, and rapid heating (drop-tube furnace) experiments. The evolution of coal nitrogen during devolatilization was dependent on both temperature and mode of heating. Under near stoichiometric combustion, 20-30% of coal nitrogen was converted to NO/sub x/. Conversion increased markedly with increased fuel-lean conditions. The NO/sub x/ formed from volatiles was proportional to the fraction of coal nitrogen evolved as HCN and NH3. The combustion of char at various temperatures and stoichiometries showed that the conversion of char nitrogen to NO/sub x/ depended primarily on char burnout. The contribution of char nitrogen to NO/sub x/ formation was greater than that of volatile nitrogen under fuel-rich conditions.
- OSTI ID:
- 6320989
- Journal Information:
- Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 62:1; ISSN CBFMA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Influence of coal composition on the fate of volatile and char nitrogen during combustion
The relative importance of the contribution of volatile-N to the formation of NO and N{sub 2}O during the combustion of coal in a FBC
Related Subjects
014000* -- Coal
Lignite
& Peat-- Combustion
AMMONIA
AUSTRALASIA
AUSTRALIA
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION KINETICS
COMBUSTION PRODUCTS
CYANIDES
DEVOLATILIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUEL-AIR RATIO
FUELS
HEATING RATE
HYDRIDES
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
MATERIALS
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS PRODUCTS
REACTION KINETICS
SYNTHESIS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES