||Influence of Bed-Region Stoichiometry on Nitric Oxide Formation in Fixed-Bed Coal Combustion.
Starley, G. P. ;
Bradshaw, F. W. ;
Carrel, C. S. ;
Pershing, D. W. ;
||Utah Univ., Salt Lake City. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
||EPA-R-805899 ;EPA-R-809267; EPA/600/J-85/236;
Nitrogen oxide(NO) ;
Beds(Process engineering) ;
Air pollution control ;
Combustion products ;
Industrial wastes ;
Chemical reactions ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The article describes the use of a 15.3 x 25.4 cm thick bed reactor with refractory walls to investigate the influence of bed-region (first-stage) stoichiometry on fuel nitrogen evolution and reaction in coal-fired mass-burning stokers. The combustor operated in a batch mode providing a Lagrangian simulation of the time/temperature/environmental history of a small bed segment traveling through a larger combustion facility. Typically, as a run proceeded, both the superficial burning rate and NO exhaust emissions increased, reached a maximum, and then decreased toward the run termination. However, under locally fuel-rich conditions, the NO emissions peaked prior to the maximum combustion rate. Inflame measurements suggested that fuel nitrogen evolution probably occurs at about the same rate as carbon oxidation. Overall, staging the combustion air resulted in a substantial decrease in exhaust NO emissions.
||Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
||Pub. in Combustion and Flame 59, p197-211 1985.
|NTIS Title Notes
|PUB Date Free Form
||7A; 7D; 21B; 68A; 99B; 99F; 81A
||Not available NTIS