Pilot and Full-Scale Demonstration of Advanced Mercury Control Technologies for Lignite-Fired Power Plants. Quarterly Report.

Benson, S. A. ; Crocker, C. R. ; Galbreath, K. C. ; Gunderson, J. R. ; Holmes, M. J. ; Laumb, J. D. ; Olderbak, M. R. ; Pavlish, J. H.

Technical Information Center Oak Ridge Tennessee

关键词: Mercury;    Fossil fuel power plants;    Carbon;    Air pollution control;    Additives;   

RP-ID  :  DE2005836113

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

North Dakota lignite-fired power plants have shown a limited ability to control mercury emissions in currently installed electrostatic precipitators (ESPs), dry scrubbers, and wet scrubbers. This low level of control can be attributed to the high proportions of Hg(sup 0) present in the flue gas. Speciation of Hg in flue gases analyzed as part of the U.S. Environmental Protection Agency (EPA) information collection request (ICR) for Hg data showed that Hg(sup 0) ranged from 56% to 96% and oxidized mercury ranged from 4% to 44%. The Hg emitted from power plants firing North Dakota lignites ranged from 45% to 91% of the total Hg, with the emitted Hg being greater than 85% elemental. The higher levels of oxidized mercury were only found in a fluidized-bed combustion system.