On March 15, 2005, EPA issued the Clean Air Mercury Rule, requiring phased-inreductions of mercury emissions from electric power generators. ADA-ES, with supportfrom DOE/NETL and industry partners, is conducting full-scale evaluations to determinethe capabilities of activated carbon injection, coal blending, and coal additives for mercurycontrol on different coals and air pollution equipment configurations. This paper willpresent results from four sites: Sunflower Electric's Holcomb Station, AmerenUE'sMeramec Station, Basin Electric Power Cooperative's Laramie River Station, and DTEEnergy's Monroe Power Plant.Holcomb fires a PRB coal and has a spray dryer absorber (SDA) and fabric filter for SO2and particulate control. Meramec fires a PRB coal and has a cold-side ESP for particulatecontrol. Laramie River fires a PRB coal and is equipped with an SDA and electrostaticprecipitator (ESP). Monroe fires a blend of bituminous and PRB coals and has a selectivecatalytic reduction process (SCR) for NOX control and an ESP for particulate capture.Mercury control options tested at these sites included coal blending, coal additives, andtreated and untreated activated carbons. The effect of SCR on mercury speciation andmercury removal was also evaluated.
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