Experimental evaluation of spray-dryer flue-gas desulfurization for use with Eastern US coals

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6366965

Yeh, J T; Demski, R J; Gyorke, D F; Joubert, J I

An experimental study of spray dryer flue gas desulfurization has been carried out with the objective of evaluating this technology for potential use in facilities burning Eastern US coals. The investigation was conducted using a 500 lb/hr pulverized-coal-fired furnace equipped with a spray dryer and baghouse. Parameters studied included sorbent type, sorbent/sulfur ratio, approach to adiabatic saturation temperature at the spray dryer outlet, and atomizer rotation speed. The bulk of the testing was carried out with lime slurries, but some tests were also conducted with slurries of limestone, magnesium oxide, and lignite fly ash. With lime slurries, SO/sub 2/ removal efficiencies in excess of 90 percent were achieved at relatively low sorbent/sulfur ratios. Spray dryer FGD systems offer several advantages over conventional wet scrubbing systems: there is no need for sludge handling equipment; scaling and plugging problems often occurring in wet scrubbers are avoided; lower quality steel can be used for construction of vessels; energy and water consumption is significantly less; and finally, recent studies (1, 2, 3) indicate potential economic advantages of dry FGD systems over conventional lime - or limestone-based, wet scrubbing systems.

• Research Organization: USDOE Pittsburgh Energy Technology Center, PA
• OSTI ID: 6366965
• Report Number(s): CONF-820551-2; ON: DE83008420
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ADDITIVES
ADIPIC ACID
ADSORBENTS
AEROSOL WASTES
ALKALINE EARTH METAL COMPOUNDS
ASHES
BAGHOUSES
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CARBONATE ROCKS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DATA
DESULFURIZATION
DIAGRAMS
DICARBOXYLIC ACIDS
DISPERSIONS
DRY SCRUBBERS
EFFICIENCY
EQUIPMENT
EXPERIMENTAL DATA
FIELD TESTS
FLOWSHEETS
FLUE GAS
FLY ASH
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
LIMESTONE
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MIXTURES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
REMOVAL
RESIDUES
ROCKS
SCRUBBERS
SEDIMENTARY ROCKS
SLURRIES
SPRAYS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SUSPENSIONS
TESTING
THERMAL POWER PLANTS
WASTES