Record Display for the EPA National Library Catalog


Main Title Field Evaluation of a Low-NO(sub X) Firing System for Tangentially Coal-Fired Utility Boilers.
Author Kokkinos, A. ; Lewis, R. D. ;
CORP Author Combustion Engineering, Inc., Windsor, CT.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Year Published 1985
Report Number EPA-68-02-3655; EPA/600/7-85/018;
Stock Number PB85-201093
Additional Subjects Boilers ; Air pollution control ; Field tests ; Performance evaluation ; Electric power plants ; Concentration(Composition) ; Design criteria ; Sampling ; Sites ; Combustion products ; Industrial wastes ; Revisions ; Corrosion tests ; Tables(Data) ; Coal fired power plants ; Low nitrogen oxides concentric firing systems ; Combustion modifications ; Air pollution sampling
Library Call Number Additional Info Location Last
NTIS  PB85-201093 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 340p
The report gives results of a full-scale utility demonstration of Combustion Engineering's Low-NOx Concentric Firing System (LNCFS), conducted at Utah Power and Light's 400 MWe Hunter No. 2 boiler. This program was implemented to investigate and evaluate the effectiveness of using concentric (offset) firing to reduce NOx emission levels from tangentially coal-fired utility boilers. The tests covered the period from August 1981 to March 1984 and included six short-term boiler characterization test series and four long-term (30-day) continuous emissions monitor (CEM) tests. A total of 384 characterization tests were conducted during the six test series, analyzing boiler performance and emissions as functions of excess air, load, fuel elevations in service, burner tilt, overfire air (OFA) flow, OFA tilt, offset angle, and fuel-air flow. Additionally, furnace wall corrosion was monitored, both short- (with corrosion coupons) and long-term (with wall thickness measurements), by another contractor. Overall program results have shown NOx emissions levels of about 0.4 lb NOx per million Btu for the 30-day continuous monitoring periods and about 0.3 lb NOx per million Btu for the short-term optimization tests. These levels represent 33 and 50% reductions in NOx emissions levels, respectively, from baseline standard operating procedures.