Low NO{sub x} slag tap firing for a low emission boiler system
- DB Riley, Inc., Worcester, MA (United States)
DB Riley, Inc. was recently awarded the proof of concept phase of the U.S. Department of Energy Low Emission Boiler System (LEBS) program to develop the next major advancement in pulverized coal burning technology. The DB Riley project team has developed a 400 MWe Commercial Generating Unit (CGU) design meeting all environmental and efficiency goals. The LEBS design is based on a low-NO{sub x} U-fired slag tap firing system. Low NO{sub x} slag tap firing has been demonstrated in a 100 million Btu/hr (29 MW) U-fired test facility for a high sulfur, Illinois coal, and a medium sulfur Appalachian coal, at less than 0.2 lb/million Btu (0.086 g/MJ) of NO{sub x} while converting the coal ash into a low volume, inert, and non-leachable solid. The result is an 80% reduction in NO{sub x} emissions typical of commercial stagging boilers. We obtained this low NO{sub x} emission firing with DB Riley`s CCV{reg_sign} dual air zone burner in combination with either air staging alone or with coal reburning. We also tested a baseline burner that simulated burners in commercially operating stagging boilers. The baseline burner matched the trends and the absolute value of NO{sub x} emission in the commercial boilers, validating the test facility results. The firing system and LEBS emission control components will be demonstrated in a Proof of Concept (POC) facility.
- Research Organization:
- Coal and Slurry Technology Association, Washington, DC (United States)
- DOE Contract Number:
- AC22-92PC92158
- OSTI ID:
- 585250
- Report Number(s):
- CONF-980309-PROC.; TRN: 98:001614-0001
- Resource Relation:
- Conference: 23. international technical conference on coal utilization and fuel systems, Clearwater, FL (United States), 9-13 Mar 1998; Other Information: PBD: 1998; Related Information: Is Part Of The proceedings of the 23rd International Technical Conference on Coal Utilization and Fuel Systems; Sakkestad, B.A. [ed.]; PB: 1143 p.
- Country of Publication:
- United States
- Language:
- English
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