Mercury speciation at power plants using SCR and SNCR control technologies

Abstract

Since EPA s regulatory determination in 2000 that it intended to regulate mercury emissions from coal-fired power plants, many U.S. utilities have accelerated their efforts to find alternative methods and technologies to more effectively control and reduce emissions. This article presents preliminary results from tests performed at six US power plants to investigate the effect of selective catalytic reduction (SCR), selective noncatalytic reduction (SNCR), and flue gas-conditioning systems on the speciation and removal of mercury. 13 refs., 12 figs., 3 tabs.