EXHAUST GAS TREATMENT APPARATUS

摘要

An exhaust gas treatment apparatus which can reduce NOx (nitrogen oxide) produced as a by-product at the time of treating an exhaust gas by applying a three-way catalytic process is disclosed. The exhaust gas treatment apparatus has an oxidative decomposition unit configured to oxidatively decompose an exhaust gas and an exhaust gas cleaning unit configured to clean the exhaust gas after oxidative decomposition. The exhaust gas treatment apparatus includes a nitrogen oxide removing unit disposed at a stage subsequent to the oxidative decomposition unit and configured to remove a nitrogen oxide contained in the exhaust gas. The nitrogen oxide removing unit is configured to supply at least one of hydrocarbon and carbon monoxide into the exhaust gas discharged from the oxidative decomposition unit to cause the at least one of hydrocarbon and carbon monoxide to react with oxygen remaining in the exhaust gas.

主权项

1. An exhaust gas treatment apparatus having an oxidative decomposition unit configured to oxidatively decompose an exhaust gas and an exhaust gas cleaning unit configured to clean the exhaust gas after oxidative decomposition, comprising:
a nitrogen oxide removing unit configured to remove nitrogen oxide contained in the exhaust gas, the nitrogen oxide removing unit being disposed at a stage subsequent to the oxidative decomposition unit; wherein the nitrogen oxide removing unit is configured to supply at least one of hydrocarbon and carbon monoxide into the exhaust gas discharged from the oxidative decomposition unit to cause the at least one of hydrocarbon and carbon monoxide to react with oxygen remaining in the exhaust gas, thereby removing oxygen from the exhaust gas, and thereafter to cause the nitrogen oxide in the exhaust gas to react with the at least one of hydrocarbon and carbon monoxide.