Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Application of Reburning for NO(x) Control to a Firetube Package Boiler.
Author Mulholland, J. A. ; Lanier, W. S. ;
CORP Author Industrial Environmental Research Lab., Research Triangle Park, NC. ;Acurex Corp., Research Triangle Park, NC.
Year Published 1984
Report Number EPA/600/D-84/170;
Stock Number PB84-211259
Additional Subjects Air pollution control ; Nitrogen oxides ; Fire tube boilers ; Revision ; Natural gas ; Combustion efficiency ; Hydrocarbons ; Combustion products ; Industrial wastes ; Reburning processes
Library Call Number Additional Info Location Last
NTIS  PB84-211259 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 20p
The paper describes the use of a 730-kW (2.5 million Btu/hr) firetube package boiler, to demonstrate the application of reburning for NOx emission control. An overall reduction of 50 percent from an uncontrolled NOx emission of 200 ppm was realized by diverting 15 percent of the total boiler load to a natural-gas-fired second stage burner. Tests indicate that the overall order of destruction (with respect to initial NOx) is greater than one; thus, larger reductions can be expected from reburning applications to systems with higher initial NOx. Rich zone stoichiometry has been identified as the dominant process variable. Primary zone stoichiometry and rich zone residence time are parameters that can be adjusted to maximize NOx reduction. Reburning applied to firetube package boilers requires minimal facility modification. Natural gas would appear to be an ideal reburning fuel, because nitrogen in the reburning fuel has been shown to inhibit NOx reduction.