Record Display for the EPA National Library Catalog


Main Title Survey of Flue Gas Desulfurization Systems, Paddy's Run Station, Louisville Gas and Electric.
Author Isaacs., Gerald A. ;
CORP Author PEDCo-Environmental Specialists, Inc.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
Year Published 1975
Report Number EPA-68-02-1321; EPA-ROAP-21ACX; 130; EPA/650/2-2-75-057-d;
Stock Number PB-246 136
Additional Subjects Air pollution control ; Flue gases ; Electric power plants ; Sulfur dioxide ; Limestone ; Scrubbers ; Combustion ; Solid waste disposal ; Capitalized costs ; Operating costs ; Calcium carbonate ; Combustion products ; Kentucky ; Coal ; Performance evaluation ; Process charting ; Limestone scrubbing ; Louisville(Kentucky) ; Marble bed scrubbers
Library Call Number Additional Info Location Last
NTIS  PB-246 136 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 47p
The report gives results of a survey of the flue gas desulfurization (FGD) system on Unit 6 of Louisville Gas and Electric Co.'s Paddy's Run Power Station. The closed-loop system, which was started up in April 1973, uses a slurry of carbide lime in a marble-bed scrubber. The carbide lime, a waste by-product from a nearby acetylene manufacturing plant, contains 90-92 percent calcium hydroxide, 2-2.5 percent silica, 3-8 percent calcium carbonate, and 0.1 percent magnesium oxide. Sludge is stabilized by mixing thickener overflow with carbide lime before vacuum filtration. The sludge, containing about 40 percent solids, is trucked to a nearby 10-acre borrow pit, used as a landfill area. The Paddy's Run Station is used primarily to meet summer peaking loads. Boiler No. 6 is operated infrequently because of its low thermal efficiency (heat rate is about 13,000 Btu/kWhr). On the basis of the performance at Paddy's Run, Louisville Gas and Electric Co. is pursuing plans to install similar carbide lime FGD systems at other power stations.