Evaluation of gas/coal cofiring and gas/gas reburning for emissions control on a tangentially-fired boiler. Final report, September 1991-September 1992

Technical Report · Mon Mar 01 00:00:00 EST 1993

OSTI ID:6368266

Angello, L C; Marquez, A; Hong, C C

Field tests on a 71 MWe tangentially-fired boiler showed that gas/coal cofiring and gas/gas reburning are effective in reducing pollutant emissions. For 34 percent gas cofiring, NOx, SO2, and CO2 emissions were reduced by 35-45, 34, and 12 percent, respectively, compared to 100 percent coal firing. The use of overfire air combined with gas cofiring resulted in NOx reductions of up to 65 percent. Carbon in ash was reduced by 20-30 percent. Heat efficiency was reduced by 1.72 percent due to the increased moisture content of the combined flue gas. There was no change in boiler exit gas temperature, main steam and reheat steam temperatures. Changes in attemperation flow rates were minor.

• Research Organization: Energy and Environmental Research Corp., Orrville, OH (United States). Engineering Services Group
• OSTI ID: 6368266
• Report Number(s): PB-93-202471/XAB
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
COAL
COCOMBUSTION
NATURAL GAS
ACID RAIN
AIR POLLUTION ABATEMENT
ASHES
BOILERS
CARBON DIOXIDE
EFFICIENCY
FIELD TESTS
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
HEAT
MOISTURE
NITROGEN OXIDES
POLLUTION CONTROL EQUIPMENT
STATISTICAL DATA
STEAM
SULFUR DIOXIDE
TEMPERATURE DEPENDENCE
ATMOSPHERIC PRECIPITATIONS
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PRODUCTS
DATA
ENERGY
ENERGY SOURCES
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
INFORMATION
MATERIALS
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POWER PLANTS
RAIN
RESIDUES
SULFUR COMPOUNDS
SULFUR OXIDES
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTES
030700* - Natural Gas- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
010900 - Coal
Lignite
& Peat- Environmental Aspects