Abstract: This paper introduces the application of “ozone denitrification + wet electric demisting” technology in treatment of ultra-low emissions of tail gas from sulfuric acid plant by using sulfur slurry. After the technical upgrading，the emissions of the main pollution factors，i.e. particulate matter，sulfur dioxide，nitrogen oxides in the sulfuric acid tail gas not only meet the special limit requirements of air pollutants in GB16171—2012，but also reduce the total amount of nitrogen oxide emissions from the sulfuric acid discharge as a result of the emission concentration much lower than the targets, making due contribution to the total nitrogen oxide control for the corporate

Key words: Sulfuric acid tail gas, Emission rate, Treatment