Economic evaluation of limestone and lime flue-gas-desulfurization processes

Technical Report · Sun May 01 04:00:00 EDT 1983

OSTI ID:5633270

Burnett, T A; Stephenson, C D; Sudhoff, F A; Veitch, J D

The preliminary-grade economics (accuracy: -15%, +30%) of various alternative limestone scrubbing options (absorber type, with and without forced oxidation, and with and without adipic acid enhancemet) are examined using the current design and economic premises established for the continuing series of economic evaluations performed by TVA for EPA. The economics are projected using the Shawnee lime/limestone computer model, which is based on long-term operating data from the EPA Alkali Scrubbing Test Facility at the TVA Shawnee Steam Plant near Paducah, Kentucky. The capital investment for the base-case limestone scrubbing process (500 MW, 3.5% sulfur coal, 1979 NSPS, spray tower, forced oxidation, landfill) is $206/kW. The first-year and levelized annual revenue requirements are 10.59 and 15.09 mills/kWh, respectively. Costs for the equivalent limestone scrubbing process using a Turbulent Contact Absorber (TCA) are lower while those for the venturi - spray tower absorber are higher. The forced-oxidation landfill disposal option has a lower capital investment than the unoxidized pond disposal option for all cases studied; however, the first-year and levelized annual revenue requirements are slightly higher for the forced-oxidation landfill process for most coal applications. For the spray tower limestone process to achieve a specified SO/sub 2/ removal efficiency, it is more economical to increase the limestone stoichiometry and minimize the absorber L/G. The use of adipic acid or possibly dibasic acid (DBA) as an additive to enhance SO/sub 2/ removal in the limestone scrubbing process is an economically attractive option. The use of adipic acid remains economically attractive even if both a high unit cost and a high degradation factor for adipic acid are assumed. 176 references, 35 figures, 56 tables.

• Research Organization: Tennessee Valley Authority, Muscle Shoals, AL (USA). Div. of Energy Demonstrations and Technology
• OSTI ID: 5633270
• Report Number(s): EPA-600/7-83-029; TVA/OP/EDT-82/6; ON: DE84900344
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ADDITIVES
ADIPIC ACID
ADSORBENTS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DESULFURIZATION
DICARBOXYLIC ACIDS
ECONOMIC ANALYSIS
ECONOMICS
EFFICIENCY
EQUIPMENT
EXPERIMENTAL DATA
FEDERAL REGION IV
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
INFORMATION
KENTUCKY
LIME-LIMESTONE WET SCRUBBING PROCESSES
NATIONAL ORGANIZATIONS
NORTH AMERICA
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
REMOVAL
SCRUBBERS
SCRUBBING
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TENNESSEE VALLEY AUTHORITY
THERMAL POWER PLANTS
US ORGANIZATIONS
USA
WASTES