EXHAUST GAS PURIFYING APPARATUS AND EXHAUST GAS PURIFYING METHOD USING THE SAME

摘要

Disclosed is an exhaust gas purifying apparatus comprising an exhaust gas pipe (2) connected to an internal combustion engine (1), an upstream catalyst (3) arranged on the upstream side of the exhaust gas passage in the exhaust gas pipe (2), a downstream catalyst (4) arranged on the downstream side of the exhaust gas passage in the exhaust gas pipe (2) and loaded with nickel and/or iron, and an oxidizing gas supply means (5) connected between the upstream catalyst (3) and the downstream catalyst (4) in the exhaust gas pipe (2) for supplying an oxidizing gas into the exhaust gas pipe (2).