Removal of elemental mercury from flue gas by recyclable CuCl2 modified magnetospheres catalyst from fly ash: Part 6. Commercial scale demonstration at a 1000MWth coal-fired power plant.

• The Hg0 removal by CuCl 2 -MF technology was applied to large coal-fired units. • The mercury removal performance of CuCl 2 -MF with different conditions were studied. • The optimal magnetosphere injection parameters were assured by the results of tests. • CuCl 2 -MF showed superior Hg0 removal ability and mercury recovery performance. CuCl 2 –MF was a cost–efficient and highly efficient sorbent for Hg removal from flue gas in coal-fired units. In this study, the Hg0 adsorption and oxidation performance of CuCl 2 –MF with different conditions were studied at a 1000 MW commercial scaled coal-fired power plant. Under the optimal conditions, the total removal efficiency of Hg and the Hg recovery rate reached 98.72% and 52.76% using CuCl 2 –MF injection combined with the existing pollutant control device. The magnetosphere particle size of 45 μm–75 μm exhibited the highest mercury removal capacity. Additionally, the final mercury emission concentration was 0.334 μg/m3 and the corresponding relative mercury removal efficiency was 89.81%. The results of this study proved that elemental mercury removal by CuCl 2 –MF was also suitable for large-scale coal-fired units with a high Hg removal efficiency even in the low concentrations of mercury, which provided a reference for the practical application of this technology in other units in the future and supplied valuable experience for other mercury removal technologies. [ABSTRACT FROM AUTHOR]