Pilot evaluation of natural gas reburning for cyclone boiler NO sub x control

Conference · Fri Jan 01 04:00:00 EST 1988 · Proceedings of the American Power Conference; (USA)

OSTI ID:7229135

Maringo, G; Farzan, H ^[1]; McElroy, M; Kokkinos, A ^[2]; Pratapas, J ^[3]

---

1. Babcock and Wilcox Co., Barberton, OH (USA)
2. Electric Power Research Inst., Palo Alto, CA (USA)
3. Gas Research Inst., Chicago, IL (USA)

There are currently no commercially demonstrated combustion modification techniques for cyclone boilers which reduce NO{sub x} emissions. The recent emergence of the reburning technology for NO{sub x} emission reduction offers cyclone boiler owners a promising alternative. Reburning involves the injection of a supplemental fuel (natural gas, oil, or coal) into the main furnace in order to produce locally reducing stoichiometric conditions which convert NO{sub x} produced in the main combustion zone to molecular nitrogen, thereby reducing overall NO{sub x} emissions. This paper presents the results obtained using reburning on a 6-million Btu/hr cyclone-equipped pilot. A 50 - 80% overall NO{sub x} reduction from baseline conditions was observed utilizing natural gas as the reburn fuel. The optimal NO{sub x} reduction results were obtained utilizing a reburn zone stoichiometry of 0.85 - 0.9 and 10% flue gas recirculation to the reburn burners. CO emissions levels were low (less than 30 ppm)throughout the various optimum test conditions.

• OSTI ID: 7229135
• Report Number(s): CONF-880403--
• Conference Information: Journal Name: Proceedings of the American Power Conference; (USA) Journal Volume: 50
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
034000 -- Natural Gas-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200103 -- Fossil-Fueled Power Plants-- Waste-Fueled Systems
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
ADDITIVES
AIR POLLUTION CONTROL
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COAL
COMBUSTION KINETICS
COMBUSTORS
CONTROL
CYCLONE COMBUSTORS
EMISSION
ENERGY SOURCES
FLUE GAS
FLUIDS
FOSSIL FUELS
FUEL ADDITIVES
FUEL GAS
FUEL SUBSTITUTION
FUELS
FURNACES
GAS FUELS
GASEOUS WASTES
GASES
KINETICS
MATERIALS
NATURAL GAS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
POLLUTION CONTROL
REACTION KINETICS
STOICHIOMETRY
WASTES