Cross-flow, filter-sorbent-catalyst for particulate, SO{sub 2} and NO{sub x} control. Final report
- Little (Arthur D.), Inc., Cambridge, MA (United States)
- Massachusetts Inst. of Tech., Cambridge, MA (United States)
This report describes work performed on a new concept for integrated pollutant control: An active filter comprised of layered, gas permeable membranes that act as a particle filter, an SO{sub 2} sorbent, and a NO{sub x}, reduction catalyst. The focus of the research program documented in this final report is the development of the sorbent/catalyst materials that are the basis of such an emission control system. The device investigated in this program will simultaneously remove particulates, SO{sub 2} and NO{sub x}, from combustion exhaust gases. Sulfur dioxide capture and nitrogen oxide reduction are achieved with a reg le, mixed-metal oxide sorbent-catalyst. The device is a filter with layered walls: A small-pore layer is a barrier to particles, and a macroporus active layer is a SO{sub 2} sorbent and a catalyst for the selective catalytic reduction of NO{sub x}. The small-pore layer could be an inert ceramic that provides structural strength to the unit and protects the active (sorbent-catalyst) material from abrasion or contamination from fly ash particles. We have found that 95--100% removal efficiency of SO{sub 2} and 60--90% removal of NO{sub x}, is achievable with the use of mixed-metal oxide sorbent-catalysts in the device. The ceramic filters are barriers to particles and typically have removal efficiencies of 99.9%.
- Research Organization:
- Little (Arthur D.), Inc., Cambridge, MA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-89PC89805
- OSTI ID:
- 10190762
- Report Number(s):
- DOE/PC/89805-T9; ON: DE95001934; BR: AA0505000
- Resource Relation:
- Other Information: PBD: May 1994
- 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
Cross-flow, filter-sorbent catalysts for particulate, SO sub 2 and NO sub x control
Related Subjects
36 MATERIALS SCIENCE
SULFUR DIOXIDE
AIR POLLUTION CONTROL
NITROGEN OXIDES
COPPER OXIDES
CATALYTIC EFFECTS
ALUMINIUM OXIDES
CERIUM OXIDES
FILTERS
PARTICULATES
COMBUSTION PRODUCTS
COAL
SORPTION
CATALYSTS
PERFORMANCE
CHEMICAL PREPARATION
PRESSURE DROP
PROGRESS REPORT
014000
010800
360201
360202
COMBUSTION
WASTE MANAGEMENT
PREPARATION AND FABRICATION
STRUCTURE AND PHASE STUDIES