Mercury removal efficiencies of copper halide impregnated non-carbon sorbents
铜基改性非碳基吸附剂汞脱除性能研究

This research focuses on the mercury sorbents development from 6 non-carbon based carriers of high specific surface areas. CuCl2 and CuBr2 have been selected as the active substances. Sorbents developed from Al2O3, zeolite and bentonite achieved high mercury removal efficiencies in pure N2. Moisture would decrease the mercury removal, whilst SO2 might inhibit mercury adsorption of non-carbon sorbents, especially for CuBr2 impregnated sorbents and bentonite-based sorbents. The effects of NO were related to carrier type. The mercury removal efficiencies of CuCl2 impregnated sorbent or bentonite-based sorbent would be reduced by adding HCl into the flue gas. The overall effect of actual gas on mercury removal was the sum up of the effects of single gas species. Among all the sorbents, CuCl2 impregnated Al2O3 has demonstrated promising mercury capture capability and high mercury oxidation rate in all gas atmosphere