Application of reburning for NO /SUB x/ control to a firetube package boiler

Conference · Sat Sep 01 04:00:00 EDT 1984 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:6404369

Mulholland, J A; Lanier, W S

A 730 kW (2.5 x 10/sup 6/ Btu/hr) firetube package boiler was used to demonstrate the application of reburning for NO /SUB x/ emission control. An overall reduction of 50 percent from an uncontrolled NO /SUB x/ emission of 200 ppm was realized by diverting 15 percent of the total boiler load to a natural-gas-fired second stage burner. Tests indicate that the overall reaction order of destruction with respect to initial NO /SUB x/ is greater than one; thus, larger reductions can be expected from reburning applications to systems with higher initial NO /SUB x/ . Rich zone stoichiometry has been identified as the dominant process variable. Primary zone stoichiometry and rich zone residence time are parameters that can be adjusted to maximize NO /SUB x/ reduction. Reburning applied to firetube package boilers requires minimal facility modification. Natural gas would appear to be an ideal reburning fuel as nitrogen in the reburning fuel has been shown to inhibit NO /SUB x/ reduction.

• Research Organization: Acurex Corporation, Research Triangle Park, NC
• OSTI ID: 6404369
• Report Number(s): CONF-840905-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 84-JPGC-APC-3
• Country of Publication: United States
• Language: English

Related Subjects

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
AFTERBURNERS
AIR POLLUTION ABATEMENT
BOILERS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION WAVES
DENITRIFICATION
ENERGY SOURCES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
HEAT EXCHANGERS
NATURAL GAS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OPTIMIZATION
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
REDUCTION
STOICHIOMETRY
TESTING
THERMOCHEMICAL PROCESSES
WASTES