Economic evaluation of advanced limestone, Davy S-H, and Dowa Gypsum-producing FGD processes

Technical Report · Wed Feb 01 04:00:00 EST 1984

OSTI ID:6411458

Dotson, R L; Maxwell, J D; Burnett, T A

Economic evaluations were made of three gypsum-producing FGD processes: advanced limestone (in-loop forced oxidation with adipic acid additive), Davy S-H (lime), and Dowa (aluminum sulfate, limestone). For a 500-MW power unit burning 3.5% sulfur coal and meeting the 1979 NSPS, capital investments in 1982 costs are 93 M$ (186 $/kW) for the advanced limestone process, 116 M$ (231 $/kW) for the Davy S-H process, and 121 M$ (243 $/kW) for the Dowa process. First-year annual revenue requirements in 1984 costs for these processes are 26, 33, and 32 M$ (9.4, 11.9, and 11.7 mills/kWh), respectively. The lower capital investment and annual revenue requirements of the advanced limestone process is due in part to the use of adipic acid, which allows partial scrubbing at 95% removal. The Davy S-H has slightly higher annual revenue requirements than the Dowa process because lime rather than limestone is used. Changes in power unit size and coal sulfur content affect the costs of all three processes similarly. The Davy S-H process is more sensitive to raw material costs because lime is used. Landfill waste disposal is a minor cost element in all three processes. 103 references, 26 figures, 30 tables.

• Research Organization: Tennessee Valley Authority, Chattanooga (USA). Div. of Energy Demonstrations and Technology
• OSTI ID: 6411458
• Report Number(s): TVA/OP/EDT-82/20; EPA-600/7-84-027; ON: DE85900359
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
015000 -- Coal
Lignite
& Peat-- Economic
Industrial
& Business Aspects
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ADDITIVES
ADIPIC ACID
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CAPITALIZED COST
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
COST
DAVY S-H PROCESS
DESULFURIZATION
DIAGRAMS
DICARBOXYLIC ACIDS
DOWA PROCESS
ECONOMIC ANALYSIS
ECONOMICS
FLOWSHEETS
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
GYPSUM
LIME-LIMESTONE WET SCRUBBING PROCESSES
MINERALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POWER PLANTS
PRODUCTION
SCRUBBING
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
THERMAL POWER PLANTS
WASTES