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 · Thu Aug 01 04:00:00 EDT 1991

DOI:https://doi.org/10.2172/7284320· OSTI ID:7284320

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 (NOx) 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 NOx 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 fuel 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 US coal.

• Research Organization: Southern Co. Services, Inc., Birmingham, AL (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FC22-90PC89652
• OSTI ID: 7284320
• Report Number(s): DOE/PC/89652-T6; ON: DE92018210
• 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
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION ABATEMENT
AMMONIA
CARBONACEOUS MATERIALS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
COMPARATIVE EVALUATIONS
DEMONSTRATION PROGRAMS
DENITRIFICATION
DOCUMENT TYPES
ENERGY SOURCES
EVALUATION
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
MANUFACTURERS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
PROGRESS REPORT
REDUCTION
SELECTIVE CATALYTIC REDUCTION
THERMOCHEMICAL PROCESSES
WASTES