Record Display for the EPA National Library Catalog


Main Title Pollutant formation during fixed-bed and suspension coal combustion /
Author Manis, S. C. ; Munro, J. M. ; Purcell, S. P. ; Starley, G. P. ; Slaughter, D. M.
Other Authors
Author Title of a Work
Manis, S. C.
CORP Author Utah Univ., Salt Lake City. Dept. of Chemical Engineering.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory,
Year Published 1984
Report Number EPA/600/7-84/026; EPA-R-805899
Stock Number PB84-163286
Subjects Combustion--Environmental aspects--United States ; Nitrogen oxides--Environmental aspects--United States ; Sulfoxides--Environmental aspects--United States ; Sulphoxides--Environmental aspects--United States
Additional Subjects Air pollution control ; Stokers ; Boilers ; Nitrogen oxides ; Sulfur oxides ; Performance evaluation ; Design criteria ; Industrial wastes ; Combustion products ; Comparison
Library Call Number Additional Info Location Last
NTIS  PB84-163286 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 80 pages ; 28 cm
The report summarizes a 3-year study of the formation and control of nitrogen and sulfur oxides (NOx and SOx) in industrial coal-fired boilers, with emphasis on stoker-fired units. Three major research areas were considered: the evolution and oxidation of fuel nitrogen and sulfur, the retention of SOx by ash and/or solid-chemical sorbents, and the effectiveness of distributed air addition for NOx control. The study also included quantification of the combustion process in a stoker environment and consideration of possible detrimental effects of control technology on boiler operation. Study results indicate that two types of NOx controls appear to be viable: (1) the coal feed could be screened to remove the fines (particles < 0.1 in.), essentially eliminating the high conversion of nitrogen evolved in the suspension zone and resulting in an overall emissions reduction of about 10-40%, depending on the amount normally present in the raw coal; and (2) the primary overfire-air injection port could be moved to above the spreader and the suspension zone and bed region could both be operated substoichiometric, reducing emissions by as much as 50%. Unfortunately, controlling SO2 formation in either a spreader or mass-burning stoker unit appears to be difficult.
Caption title. "February 1984." "EPA-600/7-84-026." Microfiche.