Advances in Refined Coal Technology for Emissions Reduction

Authors:
M. Gadgil; Babcock & Wilcox Power Generation Group, Inc. (Ohio, U.S.A.)
M.F. Abbott; Chem-Mod LLC (Pennsylvania, U.S.A.)
S. Batanian and G. Kotch; Gallagher Clean Energy  (Illinois and Pennsylvania, U.S.A.)
T. Owens; Meridian Energy & Environment (South Carolina, U.S.A.)
M. Watson; Santee Cooper (South Carolina, U.S.A.)

Presented to:
Power Plant Pollutant Control "Mega" Symposium, 2014 (Maryland, U.S.A.)

Abstract:
Refined coal technology is widely used in coal-fired power plants for emissions reduction. The technology is successfully implemented for different types of coals and combustion configurations resulting in reduction in both nitrogen oxides (NOx) and mercury emissions. Refined coal additives are a cost-effective alternative to activated carbon injection (ACI) for mercury emissions control. Recent developments have been made to optimize the refined coal process to enhance its benefits. One such improvement is reduction in the halogen addition to the coal for mercury control. Data will be presented demonstrating various balance-of-plant benefits of halogen reduction. For example, halogen reduction results in lower trihalomethane (THM) levels in the waste water for units burning eastern bituminous coal with wet flue gas desulfurization (WFGD).

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