Characterization of advanced sorbents for dry SO/sub 2/ control

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6004496

Jozewicz, W; Chang, J C.S.; Sedman, C B; Brna, T G

New flyash/lime sorbents were developed for removing SO/sub 2/ from coal-fired flue gas. Flyash-to-lime weight ratios of 1:1 to 10:1 and several additives to these sorbents for promoting their reactivity were evaluated in a bench-scale reactor simulating conditions in a fabric filter. Of the additives tested, Na/sub 2/HPO/sub 4/ . 7H/sub 2/O, (NH/sub 4/)/sub 2/HPO/sub 4/, and H/sub 3/PO/sub 4/ significantly enhanced the reactivity of the dry sorbents with SO/sub 2/. Alternative sources of silica were reacted with lime, and the resultant dry sorbents were shown to be highly reactive with SO/sub 2/. Of the siliceous materials tested, several diatomaceous earths, montmorillonitic clays, and kaolins were identified as containing reactive silica. The morphology of the sorbents developed was characterized. This information, along with the reactor test results, was used to rate the sorbents for pilot plant evaluation.

• OSTI ID: 6004496
• Report Number(s): CONF-870323-
• 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
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATION ENERGY
ADDITIVES
ADSORBENTS
ADSORPTION
AEROSOL WASTES
AIR POLLUTION CONTROL
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ASHES
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CLAYS
COAL
CONTROL
DESORPTION
DESULFURIZATION
DIATOMACEOUS EARTH
DRY SCRUBBERS
ENERGY
ENERGY SOURCES
EQUIPMENT
FABRIC FILTERS
FILTERS
FLUE GAS
FLY ASH
FOSSIL FUELS
FUELS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
INORGANIC ACIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KAOLIN
KINETICS
MATERIALS
MATHEMATICAL MODELS
MONTMORILLONITE
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PHOSPHATES
PHOSPHORIC ACID
PHOSPHORUS COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
REACTION KINETICS
REMOVAL
RESIDUES
SCRUBBERS
SCRUBBING
SODIUM COMPOUNDS
SORPTION
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
TESTING
WASTES
WATER