Wet type plasma reactor for incinerator

The wet type plasma reactor is a new facility developed to control the emission of dioxin. Flue gases from coal-fired power plants, waste incinerator etc. contain harmful pollutants such as dioxin, NO/sub x/, SO/sub 2/ and particle matter. Many processes have been developed for the removal of such pollutants from the flue gas before release to the atmosphere. For example, a coal-fired power station utilizes selective catalytic reduction process for NO/sub x/ removal, wet or dry scrubber for SO/sub 2/ removal and electrostatic precipitator (ESP) or bag filter for the removal of particle matter. These methods have good performance but are capital intensive. An effective treatment process has been of interest especially for small-scale power generation such as co-generation system and waste incinerator system. The authors studied the gas cleaning process utilizing the DC corona discharge or pulsed discharge with a water film. We found that the wet type nonthermal plasma reactor is more effective for the gas cleaning than the dry type reactor. Dioxin removal efficiency more than 90% was obtained in this system.