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OLS Field Name OLS Field Data
Main Title Influence of Coal Composition on the Fate of Volatile and Char Nitrogen during Combustion.
Author Chen, S. L. ; Heap, M. P. ; Pershing, D. W. ; Martin, G. B. ;
CORP Author Energy and Environmental Research Corp., Irvine, CA.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-68-02-3658; EPA-600/D-83-032;
Stock Number PB83-183194
Additional Subjects Coal ; Chemical analysis ; Ranking ; Nitrogen oxide(NO) ; Combustion products ; Industrial wastes ; Air pollution ; Laboratory equipment ; Coal fired power plants ; Air pollution detection
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NTIS  PB83-183194 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 36p
Abstract The paper gives results of burning 50 coals from North America, Europe, Asia, South Africa, and Australia in a 21 kWt refactory-lined tunnel furnace to determine the influence of coal properties on the fate of volatile and char nitrogen. Excess-air fuel NO emissions (determined by combustion in Ar/O2/CO2) ranged from 415 to 1380 ppm with a premixed burner. These results correlated with total fuel nitrogen, inert pyrolysis HCN yield, and non-volatile nitrogen content, rather than with the geographic origin of the coal. Minimum staged NO emissions (at optimum first stage stoichiometry) ranged from 140 to 380 ppm. Detailed in-flame measurements indicated that, as first stage stoichiometry (air/fuel) was reduced, first stage NO formation decreased, but was ultimately offset by increases in oxidizable gaseous nitrogen species and solid phase nitrogen retention. TFN (NH3 + NO + HCN) generally increased with increasing fuel nitrogen, and the species distribution depended on coal rank. In general, HCN was greater than NH3 with bituminous coals, but less than NH3 with subbituminous and lignite coals. Second stage TFN conversion to exhaust NO decreased as the TFN distribution was shifted in favor of HCN and NH3. Char nitrogen conversion was generally low (less than 20%).
Supplementary Notes Paper presented at the International Symposium on Combustion (19th), Haifa, Israel, August 1982.
PUB Date Free Form 1982
Category Codes 21D; 7D; 97K; 99A; 68A
NTIS Prices PC A03/MF A01
Primary Description 600/13
Document Type NT
Cataloging Source NTIS/MT
Control Number 320318848
Origin NTIS
Type CAT