To provide a treatment method for engine exhaust gas, capable of efficiently reduction-removing a NOx component included in the engine exhaust gas with a catalyst and concurrently oxidizing a carbon component such as PM which is one of harmful components in the exhaust gas.
This treatment method for the engine exhaust gas includes a CO forming process of converting part of the exhaust gas component into an oxidizer component by a gas exciting means in a forward flow in the exhaust gas flow direction from an engine into the oxidizer component and of generating carbon monoxide by oxidizing a carbon component in the exhaust gas with the oxidizer component; and a denitration process of reducing a NOx component in the exhaust gas by action of reduction of the carbon monoxide on a denitration catalyst in a backward flow in the exhaust gas flow direction. In addition, the treatment apparatus for the exhaust gas discharged from the engine includes the gas exciting means and the denitration process.
TAURA MASAZUMI
FUJII HIDEJI
Arihara Koichi
Matsushima Tetsuo