Nitric oxide decomposition in air by using nonthermal plasma processing with additives and catalyst

Catalyst (copper-coated zeolite catalyst, i.e., Cu-ZSM-5) was used to enhance NOx removal plasma chemical reactions, Two kinds of hydrocarbons (2-propane-1-ol, 2-propanol) were added to the synthesized flue gas before the nonthermal plasma process, and their effects on NOx removal characteristics were investigated, Enhancement effects of NOx removal by the nonthermal plasma process with hydrocarbons as the additives were confirmed. Usually, the catalyst's working temperature is much higher than the room temperature. A catalytic reactor was installed after the plasma reactor, Catalytic effects on NOx removal characteristics disappeared when the synthesized flue gas temperature was increased (similar to 250 degrees C). When the synthesized flue gas temperature was at room temperature, about 90% NOx removal efficiency was realized with a combination of hydrocarbons; the catalytic reactor, and the pulsed discharge plasma.