Field evaluation of a low-NOx firing system for tangentially coal-fired utility boilers. Final report, August 1981-March 1984

Technical Report · Wed May 01 04:00:00 EDT 1985

OSTI ID:5500398

Kokkinos, A; Lewis, R D

The report gives results of a full-scale utility demonstration of Combustion Engineering's Low-NOx Concentric Firing System (LNCFS), conducted at Utah Power and Light's 400-MWe Hunter No. 2 boiler. This program was implemented to investigate and evaluate the effectiveness of using concentric (offset) firing to reduce NOx emission levels from tangentially coal-fired utility boilers. The tests covered the period from August 1981 to March 1984 and included six short-term boiler characterization test series and four long-term (30-day) continuous emissions monitor (CEM) tests. A total of 384 characterization tests were conducted during the six test series, analyzing boiler performance and emissions as functions of excess air, load, fuel elevations in service, burner tilt, overfire air (OFA) flow, OFA tilt, offset angle, and fuel-air flow. Additionally, furnace wall corrosion was monitored, both short- (with corrosion coupons) and long-term (with wall-thickness measurements), by another contractor. Overall program results have shown NOx emissions levels of about 0.4 lb NOx per million Btu for the 30-day continuous monitoring periods and about 0.3 lb NOx per million Btu for the short-term optimization tests. These levels represent 33 and 50% reductions in NOx emissions levels, respectively, from baseline standard operating procedures.

• Research Organization: Combustion Engineering, Inc., Windsor, CT (USA)
• OSTI ID: 5500398
• Report Number(s): PB-85-201093/XAB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
BOILERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COMBUSTION PRODUCTS
ENERGY SOURCES
FIELD TESTS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
INDUSTRIAL WASTES
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POWER PLANTS
SAMPLING
TESTING
THERMAL POWER PLANTS
WASTES