Characterization of advanced sorbents for dry SO/sub 2/ control. Published paper, October 1984-March 1987

Technical Report · Sun Mar 01 04:00:00 EST 1987

OSTI ID:6482733

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

This paper discusses the development of new flyash/lime sorbents for removing SO/sub 2/ from coal-fired flue gas. Flyash/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.

• Research Organization: Acurex Corp., Research Triangle Park, NC (USA)
• OSTI ID: 6482733
• Report Number(s): PB-87-175857/XAB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
AIR POLLUTION ABATEMENT
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION PRODUCTS
DESULFURIZATION
ENERGY SOURCES
FABRIC FILTERS
FILTERS
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
LIMESTONE
MATERIALS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
REMOVAL
ROCKS
SEDIMENTARY ROCKS
SORPTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTES