Main Title |
Effects of Design and Operating Variables on NOx from Coal-Fired Furnaces. Phase I. |
Author |
Arment, W. Joseph ;
|
CORP Author |
Babcock and Wilcox Co., Alliance, Ohio. Research Center. |
Year Published |
1974 |
Report Number |
EPAZ-68-02-0634; EPA-ROAP-21ADG-41; 650/2-74-002a; |
Stock Number |
PB-229 986 |
Additional Subjects |
Air pollution ;
Nitrogen oxides ;
Combustion chambers ;
Coal ;
Boilers ;
Combustion products ;
Air pollution control
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-229 986 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
143p |
Abstract |
The report gives results of Phase I of an investigation of combustion modification techniques for controlling NOx emissions from pulverized-coal-fired utility boilers. The techniques--studied on a 5-million Btu/hr single-burner pilot unit--included: excess air; air preheat; rating; flue gas recirculation; staged combustion; quench; and swirl. The study showed that NOx reductions of up to 50% are possible either using staged combustion or by lowering excess air levels from 30 to zero %. Flue gas recirculation yielded only moderate NOx reductions. Fuel-bound nitrogen conversion increased with increasing excess air level and decreasing temperature. At substoichiometric conditions, the final precursors for NO formation from either fuel-bound nitrogen or thermal atmospheric fixation appeared identical. For existing units, control of excess air promises to be the best method for NOx reduction; however, for new units, staging (with physical separation of the two stages) appears to be the most promising. (Author) |
Highlights Notes |
Identifies the most promising control techniques using a single burner furnace. |
NTIS Title Notes |
Final rept.. |
PUB Date Free Form |
Jan 74, |
Category Codes |
13B; 21B; 68A#; 81A |
NTIS Prices |
PC A07/MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326582210 |
Origin |
NTIS |
Type |
CAT |