Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 10, November 1, 1989--January 31, 1990

Technical Report · Thu Feb 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/10109985· OSTI ID:10109985

Wendt, J O.L.; Mereb, J B

Mechanisms governing the inter-conversion and destruction of nitrogenous species in the fuel rich reburning zone of a laboratory coal combustor were explored. Emphasis was on a configuration in which the primary flame was of pulverized coal and the reburning fuel was natural gas, although other fuels were also considered. The objective was to extract models to be used in estimating reburning effectiveness in practical combustors. Reburning mechanisms occur in two regimes; one in which fast reactions between NO and hydrocarbons are usually limited by mixing; the other in which reactions have slowed and in which known gas phase chemistry controls. For the latter regime, a simplified model based on detailed gas phase chemical kinetic mechanisms and known rate coefficients was able to predict temporal profiles of NO, NH{sub 3} and HCN. Reactions with hydrocarbons played important roles in both regimes and the Fenimore N{sub 2} fixation reactions limited reburning effectiveness at low primary NO values.

• Research Organization: Arizona Univ., Tucson, AZ (United States). Dept. of Chemical Engineering
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-87PC79850
• OSTI ID: 10109985
• Report Number(s): DOE/PC/79850--10; ON: DE92005212
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800
014000
20 FOSSIL-FUELED POWER PLANTS
200202
54 ENVIRONMENTAL SCIENCES
540120
AIR POLLUTION ABATEMENT
CHEMICAL REACTION KINETICS
CHEMICALS MONITORING AND TRANSPORT
COAL
COMBUSTION
COMBUSTORS
COMMINUTION
FUEL INJECTION SYSTEMS
NATURAL GAS
NITROGEN OXIDES
NOXIOUS GAS AND PARTICULATE EMISSIONS
PROGRESS REPORT
STAGED COMBUSTION
WASTE MANAGEMENT