EPA compares lime, limestone FGD systems
According to a recent report by the EPA, flue gas desulfurization processes using lime require lower capital investments than limestone processes, and at low coal sulfur contents, annual revenue requirements are also lower. But this advantage disappears when coal sulfur content rises above 2%. A study of FGD systems performed by TVA evaluated absorber types, forced oxidation and the use of additives. The study compared processes with forced oxidation and landfill disposal, and found these have lower capital investments than processes without forced oxidation using pond disposal. Using additives in the limestone processes reduces both capital investment and annual revenue requirements. Adipic acid seems more efficient than MgO. Comparing absorber types, EPA found that for all systems, the TCA process was lowest in capital investment and annual revenue requirements.
- OSTI ID:
- 7090983
- Journal Information:
- Coal Technol. Rep.; (United States), Vol. 2:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
FLUE GAS
DESULFURIZATION
LIME-LIMESTONE WET SCRUBBING PROCESSES
ECONOMICS
SULFUR DIOXIDE
ADSORPTION
ADIPIC ACID
AIR POLLUTION CONTROL
EFFICIENCY
INVESTMENT
MAGNESIUM OXIDES
US EPA
ALKALINE EARTH METAL COMPOUNDS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DICARBOXYLIC ACIDS
GASEOUS WASTES
MAGNESIUM COMPOUNDS
NATIONAL ORGANIZATIONS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
SCRUBBING
SORPTION
SULFUR COMPOUNDS
SULFUR OXIDES
US ORGANIZATIONS
WASTES
010402* - Coal
Lignite
& Peat- Purification & Upgrading
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)