NO{sub x} and SO{sub 2} control by gas reburning-sorbent injection
- Energy and Environmental Research Corp., Orrville, OH (United States)
The Energy and Environmental Research Corporation (EER) has demonstrated Gas Reburning-Sorbent Injection (GR-SI) to reduce emissions NO{sub x} and SO{sub 2} from coal fired utility boilers firing medium sulfur Illinois Bituminous coals. In a US DOE Clean Coal Technology (CCT) Round 1 Program two utility boilers have been retrofitted with GR-SI systems. The goal of the GR-SI demonstration at each site has been to reduce NO{sub x} and SO{sub 2} emissions by 60 and 50 percent, respectively. GR-SI has been demonstrated on Illinois Power Company`s Hennepin Station Unit 1, a 71 MW(e) tangentially-fired unit with baseline NO{sub x} emissions of 0.75 lb/10{sup 6} Btu (320 mg/MJ) and SO{sub 2} emissions of 5.3 lb/10{sup 6} Btu (2,300 mg/MJ). The GR-SI system underwent start-up and optimization testing, followed by a one-year technology demonstration. The other GR-SI program, at City Water Light and Power`s Lakeside Station Unit 7, in Springfield, Illinois has also been completed. The host unit, a 33 MW(e) cyclone-fired boiler, was retrofitted with GR-SI and underwent three months of optimization and nine months of demonstration. The baseline, emissions from that unit are 1.0 lb NO{sub x}/10{sup 6} Btu (430 mg/MJ) and 5.9 lb SO{sub 2}/10{sup 6} Btu (2500 mg/MJ). Conclusions from these studies are: NO{sub x} reductions exceeded 60 percent and SO{sub 2} reductions exceeded 50 percent; Low CO emissions were maintained; HCL and HF were significantly reduced; Particulate emissions were below the compliance limits, maintained by flue gas humidification in one case: and Impacts on thermal performance were minor.
- OSTI ID:
- 52011
- Report Number(s):
- CONF-940930-; TRN: IM9524%%481
- Resource Relation:
- Conference: 11. annual international Pittsburgh coal conference: coal, energy and the environment, Pittsburgh, PA (United States), 12-16 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Eleventh annual international Pittsburgh coal conference proceedings: Volume 2; Chiang, S.H. [ed.]; PB: 860 p.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
ILLINOIS
FOSSIL-FUEL POWER PLANTS
POLLUTION CONTROL EQUIPMENT
RETROFITTING
SULFUR DIOXIDE
AIR POLLUTION CONTROL
NITROGEN OXIDES
COMBUSTION PRODUCTS
NATURAL GAS
COCOMBUSTION
SORBENT INJECTION PROCESSES
US CLEAN COAL TECHNOLOGY PROGRAM
EFFICIENCY
CARBON MONOXIDE
HYDROCHLORIC ACID
HYDROFLUORIC ACID
FLY ASH
HUMIDITY CONTROL
AIR POLLUTION MONITORING
EMISSION
EXPERIMENTAL DATA