Demonstration of selective catalytic reduction (SCR) technology for the control of nitrogen oxide (NO[sub x]) emissions from high-sulfur coal-fired boilers

Technical Report · Sat Aug 01 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/6979968· OSTI ID:6979968

The objective of this project is to demonstrate and evaluate commercially available Selective Catalytic Reduction (SCR) catalysts from US, Japanese and European catalyst suppliers on a high-sulfur US coal-fired boiler. SCR is a post-combustion nitrogen oxide (NO[sub x]) control technology that involves injecting ammonia into the flue gas generated from coal combustion in an electric utility boiler. The flue gas containing ammonia is then passed through a reactor that contains a specialized catalyst. In the presence of the catalyst, the ammonia reacts with NO[sub x] to convert it to nitrogen and water vapor. Although SCR is widely practiced in Japan and Europe, there are numerous technical uncertainties associated with applying SCR to US coals. These uncertainties include: (1) potential catalyst deactivation due to poisoning by trace metal species present in US coals that are not present in other fuels. (2) performance of the technology and effects on the balance-of-plant equipment in the presence of high amounts of SO[sub 2] and SO[sub 3]. (3) performance of a wide variety of SCR catalyst compositions, geometries and methods of manufacture under typical high-sulfur coal-fired utility operating conditions. These uncertainties will be explored by constructing a series of small-scale SCR reactors and simultaneously exposing different SCR catalysts to flue gas derived from the combustion of high sulfur U. S. coal.

• Research Organization: Southern Co. Services, Inc., Birmingham, AL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FC22-90PC89652
• OSTI ID: 6979968
• Report Number(s): DOE/PC/89652-T8; ON: DE93005988
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
CATALYSTS
COMPARATIVE EVALUATIONS
FLUE GAS
AIR POLLUTION CONTROL
FOSSIL-FUEL POWER PLANTS
NITROGEN OXIDES
SELECTIVE CATALYTIC REDUCTION
AMMONIA
NUMERICAL DATA
PROGRESS REPORT
US CLEAN COAL TECHNOLOGY PROGRAM
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DATA
DENITRIFICATION
DOCUMENT TYPES
EVALUATION
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER PLANTS
REDUCTION
THERMAL POWER PLANTS
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions