Cross-flow, filter-sorbent catalyst for particulate, SO sub 2 and NO sub x control

Technical Report · Thu Aug 01 00:00:00 EDT 1991

OSTI ID:5262204

Benedek, K ^[1]; Flytzani-Stephanopoulos, M ^[2]

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1. Little (Arthur D.), Inc., Cambridge, MA (United States)
2. Massachusetts Inst. of Tech., Cambridge, MA (United States)

The first stage of work on the development a single-unit, cross flow filter-sorbent-catalyst will be the investigation of SO{sub 2} removal and NO{sub x} reduction characteristics of different sorbent-catalyst compositions (in bulk, granular form). We will conduct exploratory tests of cross-flow filters under conditions similar to those found in the combustion gases of small-scale combustors. After a year of these fundamental studies, we will conduct a preliminary evaluation of the component performance and will design two or three prototype configurations. We will also investigate the pollutant control characteristics of prototype filter-sorbent-catalyst devices. The SO{sub 2} removal and NO{sub x} reduction efficiency of a unit-element'' prototype will be investigated. This unit-element'' will be a slot reactor comprised of two flat porous walls, or slabs'' of filter-sorbent-catalyst material separated by a 0.5 centimeter gap. The particulate collection efficiency and back-flushing requirements of a multi-element version of this device will be tested. We estimate that better than 90% removal efficiency of SO{sub 2} and NO{sub x} is achievable with the use of mixed metal oxides (CuO, CeO{sub 2}) in the device. Also, high sulfur capacity is possible by increasing the metal oxide content of the active SO{sub 2} sorbent phase. Aluminum oxide, Al{sub 2}O{sub 3}, is planned to be used as a dispersant and/or catalyst support in the active sorbent-catalyst layer(s). Concurrent with these efforts will be the investigation of a sorbent regeneration scheme that has the potential to produce elemental sulfur in a one step process. 8 refs., 8 figs., 8 tabs.

• Research Organization: Little (Arthur D.), Inc., Cambridge, MA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-89PC89805
• OSTI ID: 5262204
• Report Number(s): DOE/PC/89805-5; ON: DE91018625
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
CERIUM OXIDES
CATALYTIC EFFECTS
SORPTIVE PROPERTIES
COPPER OXIDES
FILTERS
DESIGN
NITROGEN OXIDES
REDUCTION
SULFUR DIOXIDE
SORPTION
AIR POLLUTION CONTROL
AMMONIA
CATALYSTS
FLUE GAS
PARTICULATES
PROGRESS REPORT
CERIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
COPPER COMPOUNDS
DOCUMENT TYPES
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL
RARE EARTH COMPOUNDS
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)