Removals of fly ash and NO in a fluidized-bed reactor with CuO/activated carbon catalysts

Abstract

This study investigates the effects of fly ash compositions (SiO2 and Al2O3), particle sizes (4-10 μm and 40 μm), and concentrations on the simultaneous removals of fly ash and NO using a fluidized-bed catalyst reactor. Experimental results show that the removal efficiencies of fly ash and NO at particle concentrations of 968-11,181 mg m−3 are 71-97% and 42-57%, respectively. SiO2 particles have more influences than Al2O3 particles on the performances of fluidized-bed CuO/AC catalyst. As the concentration of fine particle increases, the pores and active sites on catalyst surface are obstructed and therefore the activities of catalysts are depressed.