Simultaneous desulfurization and denitrification of flue gas by using urea/H2O2 solution
尿素/H2O2溶液同时脱硫脱硝机理研究

Simultaneous desulfurization and denitrification of flue gas by using urea/H2O2 solution were performed in a packed column.The results indicated that urea solution exhibits high removal efficiency towards SO2,but the efficiency of NOx removal is influenced by many factors such as H2O2 concentration,reaction temperature and initial pH value.Under the optimal conditions,the removal efficiencies towards SO2 and NOx reach 100% and 52.6%,respectively.Meanwhile,the reaction products were analyzed by chemical method and gas chromatography;the reaction mechanism and overall reaction equations for the simultaneous desulfurization and denitrification using urea/H2O2 solution are deduced.Current method may be used to modify the present wet desulfurization units and endue them with the ability of simultaneous denitrification.