PLASMA PROCESSING DEVICE AND EXHAUST EMISSION CONTROL SYSTEM USING PLASMA PROCESSING DEVICE

To provide a plasma processing device which can surely activate an exhaust gas irrespective of a flow rate of the exhaust gas, and can prevent an increase of a pressure loss.SOLUTION: A plasma processor comprises a plurality of plate-shaped electrodes arranged in an exhaust passage of an internal combustion engine, and a power supply device for applying a voltage for generating a plasma between the plate-shaped electrodes. Then, a plurality of the plate-shaped electrodes are arranged in a position in which discharge faces of the plate-shaped electrodes are oriented in a direction vertical to a flow direction of an exhaust gas and the plate-shaped electrodes face each other, a plurality of the plate-shaped electrodes have through-holes penetrating in a plate thickness direction, respectively, and the through-holes of the adjacent plate-shaped electrodes are provided in a position in which the through-holes are not overlapped on each other in the flow direction of the exhaust gas, thus making compatible both of activation of the exhaust gas and prevention of an increase of a pressure loss.SELECTED DRAWING: Figure 3 【課題】排気ガスの流量に拘わらず確実に排気ガスを活性化でき、圧力損失の増加を防止できるプラズマ処理装置の提供。【解決手段】本発明のプラズマ処理装置は、内燃機関の排気経路内に設けられた複数の板状電極と、上記板状電極間にプラズマが発生する電圧を印加する電源装置とを備える。そして、上記複数の板状電極が、放電面を排気ガスの流通方向に対して垂直になる方向に向け、互いに正面同士になる位置に配置され、上記複数の板状電極が、それぞれ、その板厚方向に貫通する貫通孔を有し、隣り合う板状電極の貫通孔が、排気ガスの流通方向において互いに重ならない位置に設けられており、排気ガスの活性化と圧力損失の増大防止とを両立できる。【選択図】図３