Record Display for the EPA National Library Catalog


Main Title Influence of Bed-Region Stoichiometry on Nitric Oxide Formation in Fixed-Bed Coal Combustion.
Author Starley, G. P. ; Bradshaw, F. W. ; Carrel, C. S. ; Pershing, D. W. ;
CORP Author Utah Univ., Salt Lake City. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Year Published 1985
Report Number EPA-R-805899 ;EPA-R-809267; EPA/600/J-85/236;
Stock Number PB86-136991
Additional Subjects Nitrogen oxide(NO) ; Stoichiometry ; Stokers ; Beds(Process engineering) ; Air pollution control ; Combustion products ; Industrial wastes ; Chemical reactions ; Staged combustion
Library Call Number Additional Info Location Last
NTIS  PB86-136991 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 16p
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.