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INITIAL TEST RESULTS OF THE LIMESTONE INJECTION MULTISTAGE BURNER (LIMB) DEMONSTRATION PROJECT
Citation:
Nolan, P. AND R. Hendriks. INITIAL TEST RESULTS OF THE LIMESTONE INJECTION MULTISTAGE BURNER (LIMB) DEMONSTRATION PROJECT. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-88/093 (NTIS PB88211750), 1988.
Description:
The paper discusses SO2 removal efficiency and low-NOx burner performance obtained during short term tests, as well as the impact of LIMB ash on electrostatic precipitator (ESP) performance at Ohio Edison's Edgewater Station. Project goals are to demonstrate 50% or more SO2 removal at a Ca/S molar stoichiometry of 2.0 and NOx emissions of less than 0.5 lb/million Btu while maintaining boiler operability and reliability. The tests, conducted before September 1987, indicated that 55-60% SO2 removal and NOx emissions on the order of 0.48 lb/million Btu are achievable. The increased dust loading of a high resistivity ash typically limited continuous operation to 2-6 hr. The paper discusses how the LIMB ash gave rise to back corona which, in turn, increased stack opacity to regulated levels. The extension of the project to include humidification of the flue gas is also described as a way to minimize these effects.