Decomposition of NO and SO2 in a cylindrical water-film pulse corona discharger

A new water film pulse corona discharger has been investigated for the treatment of SO₂ and NO. Pulse power with a voltage of 50 kV, a rising time of 100 ns was applied to a wire-cylinder reactor. Inner wall of the reactor was uniformly coated with TiO₂ nanoparticles with an average size of 15 nm. Ammonia and propylene gases were added into the reactor as additives. Uniform water film with a water supply of about 3.0 l/min/m2 was successfully achieved at the inner wall of the pulse corona reactor. Corona discharging characteristics between the reactors with and without water film were almost the same. Gas removal efficiencies for SO₂ and NO between the reactors with and without water film were also almost the same for both SO₂ and NO. It is expected that our water-film pulse discharger will be a highly durable reactor for the treatment of emission gases.