Wet limestone grinding for flue gas desulfurization

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5901175

Gaughenbaugh, D L; Linn, R J

Under the terms of the 1970 amendments to the Clean Air Act, the EPA established national ambient air quality standards for a number of pollutants. Sulfur dioxide (SO/sub 2/) was one of these pollutants. These ambient air quality standards have had perhaps their biggest impact on the power utilities. In an effort to meet the air quality standards set forth by the EPA, utilities using high sulfur fuels have been forced to install flue gas desulfurization (FGD) systems. The majority of FGD systems in operation today are nonregenerable systems, that is the by-product of the system is disposed of, usually into settling ponds. Limestone slurry is the most common reagent used to remove SO/sub 2/ from the flue gases. The calcium carbonate (limestone) slurry interacts with the flue gas, absorbing the SO/sub 2/ and forming a by-product of calcium sulfate/sulfite which is disposed of. There are a number of new and still developing FGD technologies which may become popular in the coming years. This paper addresses the limestone grinding systems utilized on wet scrubbers. Wet scrubbers are the most common type in use today.

• OSTI ID: 5901175
• Report Number(s): CONF-8609178-
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
AIR QUALITY
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
CONTROL
DESULFURIZATION
ENERGY SOURCES
ENVIRONMENTAL QUALITY
EQUIPMENT
FLUE GAS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GASEOUS WASTES
LIME-LIMESTONE WET SCRUBBING PROCESSES
MATERIALS
NATIONAL ORGANIZATIONS
OXIDES
OXYGEN COMPOUNDS
POLLUTANTS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
REMOVAL
SAFETY STANDARDS
SCRUBBERS
SCRUBBING
STANDARDS
SULFUR COMPOUNDS
SULFUR CONTENT
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
US EPA
US ORGANIZATIONS
WASTES