Pilot testing of sodium thiosulfate for oxidation/scaling inhibition in lime/limestone flue gas desulfurization systems

Conference · Mon Dec 31 23:00:00 EST 1984

OSTI ID:6282268

Chang, J C.S.; Brna, T G

Pilot plant tests have been conducted to evaluate sodium thiosulfate as an oxidation inhibition additive in five lime/limestone slurry flue gas desulfurization processes. It was found that the oxidation rate of absorbed sulfur dioxide (SO/sub 2/) was reduced by more than 50 percent in the presence of 100 to 200 ppm of thiosulfate ion in the scrubbing slurry. Calcium sulfate dihydrate (gypsum) scaling was eliminated and the unsaturated (with respect to gypsum) operation mode was maintained by the addition of sodium thiosulfate. Other benefits of sodium thiosulfate addition observed at the pilot plant included improvement in solids dewatering properties for limestone processes.

• Research Organization: Acurex Corp., P.O. Box 13109, Research Triangle Park, NC 27709
• OSTI ID: 6282268
• Report Number(s): CONF-851123-
• Country of Publication: United States
• Language: English

Related Subjects

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Lignite
& Peat-- Waste Management
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500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
CHEMICAL REACTORS
CONTROL
CORROSION INHIBITORS
DEPOSITS
DESULFURIZATION
DISPERSIONS
ELEMENTS
EQUIPMENT
FLUE GAS
GASEOUS WASTES
GYPSUM
HYDRATES
INHIBITION
LIME-LIMESTONE WET SCRUBBING PROCESSES
LIMESTONE
MAGNESIUM
MAGNESIUM SLURRY SCRUBBING PROCESS
METALS
MINERALS
MIXTURES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
REMOVAL
ROCKS
SCALE CONTROL
SCRUBBERS
SCRUBBING
SEDIMENTARY ROCKS
SLURRIES
SODIUM COMPOUNDS
SODIUM SULFATES
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SUSPENSIONS
WASTES