Optimizing Technology to Reduce Mercury and Acid Gas Emissions from Electric Power Plants

Quick, Jeffrey C. ; Tabet, David E. ; Wakefield, Sharon ; Bon, Roger L.

Utah Department Of Natural Resources

关键词: Origin;    01 Coal, Lignite, And Peat;    Washing;    Mercury;    Coal;   

DOI  :  10.2172/909154
RP-ID  :  None
RP-ID  :  FG26-03NT41901
RP-ID  :  909154

美国|英语

来源: UNT Digital Library

【 摘 要 】

Revised maps and associated data show potential mercury, sulfur, and chlorine emissions for U.S. coal by county of origin. Existing coal mining and coal washing practices result in a 25% reduction of mercury in U.S. coal before it is delivered to the power plant. Selection of low-mercury coal is a good mercury control option for plants having hot-side ESP, cold-side ESP, or hot-side ESP/FGD emission controls. Chlorine content is more important for plants having cold-side ESP/FGD or SDA/FF controls; optimum net mercury capture is indicated where chlorine is between 500 and 1000 ppm. Selection of low-sulfur coal should improve mercury capture where carbon in fly ash is used to reduce mercury emissions.