Dry removal of SO/sub 2/: application to industrial coal-fired boilers

Conference · Mon Jan 01 04:00:00 EST 1979 · Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States)

OSTI ID:5883704

Hollett, G T

A dry reagent reactor was used with lime to remove sulfur dioxide from the flue gases when 12,500 Btu/lb, 3.3 sulfur coal was burned in a 1.6 million Btu/hr hot water boiler. The reactor portion of the system has a cyclonic entry for flue gas, a rotary reagent delivery module, a recirculator for partially reacted reagent, and an expansion section. At 350-500 F, pressure drops across the reactor of 0.5 in. water, and a variety of stoichiometric ratios and sulfur dioxide inputs, the efficiencies of sulfur dioxide removal ranged from 45 to 95. The dry delivery system is cheaper and more reliable then wet system or spray-drying methods, partly because the dry method requires less energy; is free of corrosion caused by acidic liquids in wet systems; is easy to construct and maintain; and avoids scaling, fouling, and eliminator and mist carryover problems.

• OSTI ID: 5883704
• Report Number(s): CONF-790634-
• Conference Information: Journal Name: Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States) Journal Volume: 79-23.1
• 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
ALKALINE EARTH METAL COMPOUNDS
BOILERS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMPARATIVE EVALUATIONS
DESIGN
DESULFURIZATION
DRY SCRUBBERS
ENERGY CONSUMPTION
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL EQUIPMENT
REMOVAL
SCRUBBERS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTES