Air pollution cleaning wastes: dry versus wet

Journal Article · Thu Sep 01 04:00:00 EDT 1983 · J. Energy Eng.; (United States)

DOI:https://doi.org/10.1061/(ASCE)0733-9402(1983)109:3(131)· OSTI ID:6856708

Goodwin, R W

Wastes from dry air pollution control (APC) systems may not be less problematic to transport and landfill than wastes from wet APC Units, particularly the thixotropic flue gas desulfurization (FGD) sludge. FGD sludge can be converted to a soil-like, disposable material by forced oxidation, fly ash blending, or lime fixation. Dry APC wastes require dust-suppression. Dry APC wastes contain 15-23.7 weight percent of Ca(OH)/sub 2/ and CaCO/sub 3/ as compared to 3.6 mole % of CaCO/sub 3/ for wet material. Higher reagent stoichiometries have been reported for dry APC (1.3-1.5), as compared to wet systems (1.05); thus contributing greater dry waste generation rates. For a 1% sulfur, 10% ash, 10,000 Btu/lb coal, 0.14 ton of dry waste is generated per ton of coal. Oxidized FGD sludge yields 0.036 ton waste/ton coal while blended and fixated wastes contribute 0.113 and 0.12 ton of waste per ton of coal, respectively. Dry APC waste exhibited compacted density of 40 lb/CF; wet wastes reflect densities ranging from 80-90 lb/CF; (oxidized), 75-90 lb/CF (blended), and 95-105 lb/CF (fixated). Higher waste rates and lower compacted densities require more area for dry APC waste disposal than for wet.

• Research Organization: General Electric Environmental Services, New York, NY
• OSTI ID: 6856708
• Journal Information: J. Energy Eng.; (United States), Journal Name: J. Energy Eng.; (United States) Vol. 109:3; ISSN JLEED
• Country of Publication: United States
• Language: English

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20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AEROSOL WASTES
AIR POLLUTION CONTROL
ASHES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
CONTROL
DESULFURIZATION
ELECTROSTATIC PRECIPITATORS
ENERGY SOURCES
ENVIRONMENTAL EFFECTS
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FLY ASH
FOSSIL FUELS
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INDUSTRIAL WASTES
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MATERIALS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
RESIDUES
SLUDGES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
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