Open AccessOptimizing Technology to Reduce Mercury and Acid Gas Emissions from Electric Power Plants
Author(s) -
Jeffrey Quick,
David E. Tabet,
Sharon Wakefield,
Roger L Bon
Publication year - 2005
Language(s) - English
Resource type - Reports
DOI - 10.2172/909154
Subject(s) - mercury (programming language) , coal , chlorine , sulfur , waste management , fly ash , environmental science , chemistry , power station , environmental chemistry , engineering , electrical engineering , organic chemistry , computer science , programming language
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