Selective noncatalytic reduction (SNCR) field evaluation in utility natural gas-fired boilers. Final report, June 1991-March 1992
Various technologies are available to control NOx from fossil fuel-fired power plants, ranging from combustion and operational modifications to post-combustion selective catalytic NOx reduction. One potentially attractive option for gas- and oil-fired power plants is selective noncatalytic reduction (SNCR). SNCR appears capable of reducing NOx in the 50% range. Since catalysts are not required, equipment costs are considered moderate. While the SNCR process has many attractive features, there are also several disadvantages. One drawback is the relatively narrow temperature window over which the process operates (1600-1900 deg F). This poses numerous challenges for a full-scale application since the SNCR process temperature window typically occurs in the convective section where available access space is limited, gas velocities are high, and residence times are short. Another disadvantage of SNCR is the potential emissions of undesirable byproducts (e.g., NH3, N2O, and CO). Little information is available on these issues. Recognizing the potential benefits and risks, PG and E in conjunction with the Gas Research Institute performed a field evaluation of SNCR at Morro Bay Power Plant Unit 3 (MBPP3).
- Research Organization:
- Pacific Gas and Electric Co., San Ramon, CA (United States)
- OSTI ID:
- 5074987
- Report Number(s):
- PB-92-190313/XAB; CNN: GRI-5091-254-2194
- Resource Relation:
- Other Information: Sponsored by Gas Research Inst., Chicago, IL
- Country of Publication:
- United States
- Language:
- English
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03 NATURAL GAS
02 PETROLEUM
FOSSIL-FUEL POWER PLANTS
AIR POLLUTION CONTROL
NITROGEN OXIDES
REDUCTION
AMMONIA
BOILERS
CARBON MONOXIDE
CATALYSIS
COMBUSTION
COST
DEMONSTRATION PROGRAMS
EMISSION
FLUE GAS
FUEL OILS
NATURAL GAS
NATURAL GAS INDUSTRY
NITROUS OXIDE
POLLUTION CONTROL EQUIPMENT
TECHNOLOGY ASSESSMENT
UREA
AMIDES
CARBON COMPOUNDS
CARBON OXIDES
CARBONIC ACID DERIVATIVES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
ENERGY SOURCES
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
HYDRIDES
HYDROGEN COMPOUNDS
INDUSTRY
LIQUID FUELS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
POLLUTION CONTROL
POWER PLANTS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
030700 - Natural Gas- Waste Management
020800 - Petroleum- Waste Management