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APPLICATION OF STAGED COMBUSTION AND REBURNING TO THE CO-FIRING OF NITROGEN-CONTAINING WASTES
Citation:
Linak, W., J. McSorley, R. Srivastava, J. Ryan, J. Mulholland, M. Nishioka, AND J. Lewtas. APPLICATION OF STAGED COMBUSTION AND REBURNING TO THE CO-FIRING OF NITROGEN-CONTAINING WASTES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-91/063 (NTIS PB91196444), 1991.
Description:
The paper gives results of an evaluation of a 0.6 MW precombustion chamber burner, designed for in-furnace NOx control, high combustion efficiency, and retrofit applications, for use with high nitrogen content fuel/waste mixtures. he 250- to 750- ms residence time precombustion chamber burner mounted on a prototype watertube package boiler simulator used air staging and in-furnace natural gas reburning to control NOx emissions. he paper reports results of research in which the low NOx precombustor was used to examine the co-firing characteristics of a nitrogenated pesticide, containing dinoseb (2-sec-butyl-4. 6 dinitrophenol) in a fuel-oil/ xylene solvent. he dinoseb formulation as fired contained 6.4% nitrogen. O emissions without in-furnace NOx control exceeded 4400 ppm (at 0% 02). hen NOx controls in the form of air staging and natural gas reburning were used, these emissions were reduced to <150 ppm (96% reduction). verage CO and total hydrocarbon emissions were typically <15 and 2 ppm, respectively. o dinoseb was detected in any emission sample, and the destruction efficiency was determined to be 99.99%. utagenicity studies of the dinoseb emissions showed that reburning (used for NOx control) reduced the mutagenic emission factor about 60-70% from that with air staging alone.
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APPLICATION OF STAGED COMBUSTION AND REBURNING TO THE CO-FIRING OF NITROGEN-CONTAINING WASTES