Patent ID: 7863540

Claim:
A plasma reactor having a gas inlet and a gas outlet, the plasma reactor comprising: an insulating plasma reactor main body which is cylindrically formed and allows gas to pass therethrough from one end (inlet side) to the other end (outlet side); a positive electrode disposed on the inlet side of the plasma reactor main body, the positive electrode being spaced from the plasma reactor main body in an axial direction of the plasma reactor; an electrically conductive honeycomb filter which includes porous partition walls with a plurality of cells serving as gas passages, in which specific cells (inlet open cells) of which one end (filter inlet side) is open and the other end (filter outlet side) is plugged and the remaining cells (outlet open cells) of which the filter inlet end is plugged and the filter outlet side is open are alternately disposed, and which is disposed so that the filter inlet side faces the outlet side of the plasma reactor main body, and the electrically conductive honeycomb filter being a negative electrode a pulse power supply which is connected with the positive electrode and the honeycomb filter and is capable of applying a pulse voltage between the positive electrode and the electrically conductive honeycomb filter as plasma generating electrodes to generate plasma.