Experimental study on ammonia absorption for simultaneous desulfurization and denitrification

The study on simultaneous desulfurization and denitrification was carried out in a self-designed reactor using ammonia as the absorbent.The removal efficiency of SO2 was 100% and NOx removal rate was 72%.The condition for the absorption of SO2 and NOx was studied.It showed that SO32? concentration in the absorption solution is an important factor for desulfurization and denitrification.The combination of selective catalytic oxidation(SCO)and ammonia flue gas desulfurization were proposed.This method can be used to modify the existing ammonia flue gas desulfurization equipments to achieve simultaneous desulfurization and denitrification.