Cross-flow, filter-sorbent catalyst for particulate, SO sub 2 and NO sub x control
The device described in this report will simultaneously remove particulates, SO{sub 2} and NO{sub x} from the combustion gases of coal combustors. The device is configured as a cross-flow filter. The gas flows from the inlet passages to orthogonally oriented discharge channels via thin, multilayered porous walls. Flue gas enters from both the front and back of the device. With the left wall of the filter sealed, gas discharges from the right side of the device. The key to combined physical (fly ash) and chemical (SO{sub 2}/NO{sub x}) cleaning is to utilize chemical active sorbent-catalysts (e.g., metal oxides) in the layered walls of the filter. This quarter, the NO{sub x} reduction activity of three sorbent-catalyst materials was tested over a temperature range from 200 to 500{degree}C. We were primarily interested in the sorbent-catalyst NO{sub x} reduction performance at 400{degree}C because this appears to be a minimum temperature for acceptable sulfur capture with these sorbents. the tradeoff between sulfur capture and NO{sub x} reduction performance for these sorbent-catalysts is clear: sulfation improves with higher temperatures (e.g., 400--600{degree}C) while NO{sub x} reduction improves at lower temperatures (e.g., 200--300{degree}C). Sorbent-catalyst materials included: Cu-7Al-O; Cu-Ce-O; and CeO{sub 2}. 7 refs., 7 figs., 4 tabs.
- Research Organization:
- Little (Arthur D.), Inc., Cambridge, MA (United States)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC22-89PC89805
- OSTI ID:
- 6221514
- Report Number(s):
- DOE/PC/89805-T2; ADL-64303; ON: DE91005460
- Country of Publication:
- United States
- Language:
- English
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Cross-flow, filter-sorbent catalyst for particulate, SO sub 2 and NO sub x control
Related Subjects
20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
ALUMINIUM OXIDES
SORPTIVE PROPERTIES
CERIUM OXIDES
COAL
COMBUSTION
COPPER OXIDES
FILTERS
DESIGN
NITROGEN OXIDES
AIR POLLUTION CONTROL
PARTICULATES
SULFUR DIOXIDE
AMMONIA
CATALYSTS
COMBUSTION PRODUCTS
COPPER
HIGH TEMPERATURE
PROGRESS REPORT
SORPTION
SULFIDATION
TEMPERATURE EFFECTS
ALUMINIUM COMPOUNDS
CARBONACEOUS MATERIALS
CERIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
COPPER COMPOUNDS
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDRIDES
HYDROGEN COMPOUNDS
MATERIALS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL
RARE EARTH COMPOUNDS
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
010800* - Coal
Lignite
& Peat- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)