Email RIS file
Bookmark
Report an Issue

Control of NO/sub x/ emissions at a 220-MW combined-cycle power plant. Final report. [Staged combustion].

Author
Brechum, G. V.
Published
United States : [publisher not identified], 1980.
Springfield, Va. : National Technical Information Service, [approximately 1980]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Anacki, D. W., Campobenedetto, E. J., Langsjoen, P. L., Muzio, L. J., and Thompson, R. E.

Availability

Browse Nearby on Shelf
I Want It
I Want It

Finding items...

Summary
The repowering of existing utility steam boilers with a combustion gas turbine to supply hot vitiated combustion air to the windbox of a fired boiler, in place of the normal forced draft fans and air preheaters, can lead to increased power output at improved heat rates. A major consideration in converting to combined cycle operation is the impact on the nitrogen oxides (NO/sub x/) emissions from the system. A field test program was conducted to determine the NO/sub x/ characteristics of a 220 MW supplementary fired unit. A primary objective was to determine the fraction of the gas turbine generated NO/sub x/ that can potentially be reduced upon passage through the combustion zone of the boiler. As part of this test program, the boiler was operated in a low NO/sub x/, staged combustion configuration by removing selected burners from service. The baseline NO/sub x/ emissions from the combined cycle system were found to be substantially lower than the NO/sub x/ emissions from the boiler alone when operated with ambient air supplied by forced draft fans, 1.4 lb NO/sub 2//MW-hr compared to 2.3 lb NO/sub 2//NW-hr at boiler loads of 190 MW and 200 MW respectively. In a staged combustion configuration with four of twenty burners removed from service, the combined cycle NO/sub x/ emissions were reduced to 0.9 lb NO/sub 2//MW-hr. During normal operation of the combined cycle system with all burners in service, 10 to 28% of the NO/sub x/ produced by the gas turbine was reduced (destroyed) in the supplementary fired boiler. During operation of the boiler in a staged combustion configuration by removing four burners from service, a greater portion of the gas turbine generated NO/sub x/ was reduced in the boiler: 27% at a boiler load of 150 MW and 49% at a boiler load of 190 MW.
Report Numbers
EPRI-CS-1608
Other Subject(s)
Collection
NTIS collection.
Note
OSTI Identifier 7080282
Research organization: Babcock and Wilcox Co., Barberton, OH (USA).
Research organization: KVB, Inc., Irvine, CA (USA).
View MARC record | catkey: 45333148