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:7042845

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/sup 0/-500/sup 0/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 than 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.

• Research Organization: Energy Pollut. Controls Inc.
• OSTI ID: 7042845
• 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
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMPARATIVE EVALUATIONS
DESIGN
DESULFURIZATION
ENERGY CONSUMPTION
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
MATERIALS
PERFORMANCE
POLLUTION CONTROL EQUIPMENT
WASTES