Enhancing the use of coals by gas reburning-sorbent injection

Technical Report · Sun Jan 27 00:00:00 EST 1991

OSTI ID:6077779

The objective of this project is to evaluate and demonstrate a cost effective emission control technology for acid rain precursors, oxides of nitrogen (NOx) and sulfur (SOx), on two coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential and cyclone fired. Work on a third unit, wall fired, has been stopped because of funding limitations. The specific objectives are to demonstrate reductions of 60 percent in NOx and 50 percent in SOx emissions, by a combination of two developed technologies, gas reburning (GR) and sorbent injection (SI). With GR, about 80-85 percent of the coal fuel is fired in the primary combustion zone. The balance of the fuel is added downstream as natural gas to create a slightly fuel rich environment in which NOx is converted to N{sub 2}. The combustion process is completed by overfire air addition. SOx emissions are reduced by injecting dry sorbents (usually calcium based) into the upper furnace. The sorbents trap SOx as solid sulfates that are collected in the particulate control device. This project is conducted in three phases at each site: (1) Design and Permitting, (2) Construction and Startup, and (3) Operating, Data Collection, Reporting and Disposition. Current status of the project at the two remaining sites is described.

• Research Organization: Energy and Environmental Research Corp., Irvine, CA (USA)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FC22-87PC79796
• OSTI ID: 6077779
• Report Number(s): DOE/PC/79796-T10; ON: DE91009499
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
COMBUSTION PRODUCTS
COCOMBUSTION
NATURAL GAS
NITROGEN OXIDES
AIR POLLUTION ABATEMENT
SORBENT INJECTION PROCESSES
PERFORMANCE TESTING
SULFUR OXIDES
ADSORBENTS
ASHES
BOILERS
CALCIUM SULFATES
COAL
COMBUSTION
CONSTRUCTION
DATA ACQUISITION
DESIGN
ELECTROSTATIC PRECIPITATORS
FLUE GAS
FOSSIL-FUEL POWER PLANTS
HUMIDITY CONTROL
ILLINOIS
NITROGEN
OPERATION
PROGRESS REPORT
REDUCTION
START-UP
SULFIDATION
US CLEAN COAL TECHNOLOGY PROGRAM
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FEDERAL REGION V
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
MATERIALS
NITROGEN COMPOUNDS
NONMETALS
NORTH AMERICA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
RESIDUES
SULFATES
SULFUR COMPOUNDS
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
USA
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
014000 - Coal
Lignite
& Peat- Combustion
010800 - Coal
Lignite
& Peat- Waste Management