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DEMONSTRATION OF SORBENT INJECTION TECHNOLOGY ON A WALL-FIRED UTILITY BOILER (EDGEWATER LIMB DEMONSTRATION)
Nolan, P., T. Becker, P. Rodemeyer, AND E. Prodesky. DEMONSTRATION OF SORBENT INJECTION TECHNOLOGY ON A WALL-FIRED UTILITY BOILER (EDGEWATER LIMB DEMONSTRATION). U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-92/115 (NTIS PB92-201136), 1992.
The report gives results of the full-scale demonstration of Limestone Injection Multistage Burner (LIMB) technology on the coal-fired, 105 MW, Unit 4 boiler at Ohio Edison's Edgewater Station. eveloped as a technology aimed at moderate levels of sulfur dioxide (SO2) and nitrogen oxides (NOx) emissions control for relatively low-cost retrofit applications on older plants, LIMB operation at a calcium to sulfur (Ca/S) molar ratio of 2.0 is shown to be capable of achieving about 55 to 72% SO2 removal. emoval depends on the sorbent in use and the degree of flue gas humidification employed. orbents tested included a commercial calcitic hydrated lime, both with and without a small amount of calcium lignosulfonate, a material added to improve reactivity. esults are given for humidification of the flue gas both to an 11 C approach to the saturation temperature (where an increase of 10% absolute in SO2 removal efficiency is obtained), and for minimal humidification (where water is added solely to maintain adequate electrostatic precipitator--ESP--performance). he performance of the XCL low-NOx burners, with an overall emission of 206 ng/J is also presented. he report also discusses the impact of LIMB technology on boiler and plant operations. he effects are related primarily to the increased quantity of particulate that must flow through the boiler, ESP, and other ash equipment.