To improve performance for removing substances by increasing the effects of the combined use of discharge and a catalyst and to prevent the deterioration of the catalyst by preventing the contact between the catalyst and the discharge.
An electric discharge gas treatment apparatus has a discharge treatment part 20 in which a linear internal electrode 28 is arranged coaxially in a cylindrical external electrode 22. A gas 12 containing substances to be treated is made to flow perpendicularly to the part 20. The external electrode 22 has a porous gas introduction part 24 and a gas discharge part 26. Pulse corona discharge 30 is generated between the electrodes 22, 28 by applying pulse voltage between the electrodes 22, 28 from a discharge power source 14. A catalyst 18 is arranged close to the gas discharge part 26. In this way, radicals generated by the discharge 30 and light can reach the catalyst 18, and the contact between the discharge 30 and the catalyst 18 can be prevented.
KATO SHIGERU
KUWABARA TAKUYA
NAITO KENTA
SHIBANO HITOSHI
