Record Display for the EPA National Library Catalog

RECORD NUMBER: 4 OF 16

Main Title Fuel Oil Reburning Application for NOx Control to Firetube Package Boilers (Journal Version).
Author Mulholland, J. A. ; Hall, R. E. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Year Published 1987
Report Number EPA/600/J-87/159;
Stock Number PB88-154422
Additional Subjects Nitrogen oxides ; Fuel oil ; Firetube boilers ; Air pollution control ; Combustion ; Mixtures ; Reduction ; Effectiveness ; Nitrogen ; Evaporation ; Burners ; Reprints ; Reburning
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB88-154422 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Abstract
The paper discusses retrofitting two 1.0 MW (3.5 million Btu/hr) firetube package boilers for fuel oil reburning application for NOx emission control. An overall NOx reduction of 46% from an uncontrolled emission of 125 ppm (dry, at 0% O2) was realized by diverting 20% of the total boiler load to a distillate-fuel-oil-fired second stage burner; a 51% NOx reduction from 265 ppm was achieved in a distillate/residual fuel oil mixture (0.14% nitrogen content) reburning application. Nitrogen-free fuel oil reburning was found slightly more effective at reducing NOx than natural gas reburning, although longer fuel-rich zone residence times were required to allow for evaporation and mixing of the fuel oil droplets. The key parameters investigated, that impact the reburning process, were: primary flame NOx, reburn zone stoichiometry, and reburn zone residence time.