Dry scrubbing system desulfurizes flue gas from a coal-fired boiler

Journal Article · Mon Jun 02 04:00:00 EDT 1980 · Chem. Eng. (N.Y.); (United States)

OSTI ID:6185045

A dry scrubbing system desulfurizes flue gas from a coal-fired boiler in the first successful commercial application of a technique developed jointly by Rockwell International Corp.'s Energy Systems Group and Wheelabrator-Frye Inc.'s Air Pollution Control Division. According to Rockwell, which is marketing the process, the system has been operating steadily since Feb. 1980 on a coal-fired steam boiler at Celanese Fibers Co.'s Maryland plant and has allowed compliance with EPA's 70 lb/h sulfur dioxide emission limit for that installation. The process is similar to many other desulfurization techniques in that a lime slurry is sprayed into the flue gas stream to remove sulfur dioxide as sulfates and sulfites. The flue gas contacts a 30% solids slurry in a modified spray drier where the hot flue gas completely evaporates the moisture and leaves a dry powder instead of a sludge that would be corrosive and difficult to handle. The powder and any particulates or fly ash are collected in a fabric filter.

• OSTI ID: 6185045
• Journal Information: Chem. Eng. (N.Y.); (United States), Journal Name: Chem. Eng. (N.Y.); (United States) Vol. 87:11; ISSN CHEEA
• 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)
AEROSOL WASTES
ASHES
BOILERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
COMMERCIALIZATION
DESULFURIZATION
DRY SCRUBBERS
DRYING
ENERGY SOURCES
EQUIPMENT
FEDERAL REGION III
FLUE GAS
FLY ASH
FOSSIL FUELS
FUELS
GASEOUS WASTES
INDUSTRY
MARYLAND
MATERIALS
NORTH AMERICA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION CONTROL EQUIPMENT
POWDERS
RELEASE LIMITS
REMOVAL
RESIDUES
SCRUBBERS
SPRAY DRYING
STEAM GENERATORS
SULFATES
SULFITES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TECHNOLOGY UTILIZATION
TEXTILE INDUSTRY
THERMOCHEMICAL PROCESSES
USA
VAPOR GENERATORS
WASTES