A field study of a combined NH/sub 3/-SO/sub 3/ conditioning system on a cold-side fly ash precipitator at a coal-fired power plant

Conference · Sun Jan 01 04:00:00 EST 1984 · Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States)

OSTI ID:5778700

Dahlin, R S; Marchant, Jr, G H; Gooch, J P; Bickelhaupt, R E; Sears, D R; Altman, R F

This paper describes the results of a field study of a combined NH/sub 3/-SO/sub 3/ conditioning system used to improve the performance of a cold-side electrostatic precipitator at a large coal-fired power plant. The combined NH/sub 3/-SO/sub 3/ conditioning system was placed into continuous service after numerous tests by plant personnel showed that the combined NH/sub 3/-SO/sub 3/ system was more effective than the use of either nh/sub 3/ or SO/sub 3/ alone. In the tests by plant personnel, the effectiveness of various injection locations and injection rates of one or both agents was judged on the ability to maintain an acceptable stack opacity. Based on the results of these tests, the plant management selected a combined conditioning system in which NH/sub 3/ is injected between the air heater and the precipitator at a rate of 5 ppM, and SO/sub 3/ is injected ahead of the air heater at a rate of 9 ppM. This was in addition to 5 ppm of SO/sub 3/ that is produced naturally in the pulverized coal-fired boiler. In most applications of flue gas conditioning, the SO/sub 3/ is injected downstream of the air heater; however, it is believed that injection ahead of the air heater, as was done at this plant, may result in a more uniform distribution of the SO/sub 3/ in the flue gas and more effective utilization of the SO/sub 3/.

• Research Organization: Southern Res. Inst., Birmingham, AL
• DOE Contract Number: AC18-80FC10225
• OSTI ID: 5778700
• Report Number(s): CONF-840612-
• Conference Information: Journal Name: Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States) Journal Volume: 5
• 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
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL WASTES
AIR HEATERS
AIR POLLUTION ABATEMENT
AMMONIA
ASHES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
ELECTROSTATIC PRECIPITATORS
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FLY ASH
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GASEOUS WASTES
HEATERS
HYDRIDES
HYDROGEN COMPOUNDS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
PULVERIZED FUELS
RESIDUES
SULFUR COMPOUNDS
SULFUR OXIDES
SULFUR TRIOXIDE
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTES