| 摘要 |
PURPOSE:To efficiently denitrify, by separating with a multitude of porous partitions; carrying an oxidation catalyst in a down-stream part of the partitions; and placing a denitridation reaction part kept the inside at 450-900 deg.C; and installing means of injection of NH3 and an reductive material in the up-stream part of the reaction part. CONSTITUTION:NH3 and a reductive gas such as H2, CO, CH4 are injected from a line 2 and a line 3, respectively, to an exhaust gas in a combustion exhaust gas line 1 in a low temp. range (150-350 deg.C), and then the resulting gas mixture is introduced into a denitridation reaction part kept at 450-900 deg.C, and NOx in the gas is reduced to N2. After then, remaining reductive material is oxidized by an oxidation catalyst 7 carried by a down-stream part of a porous partition 4a and exhausted as H2O, CO2 from clean gas flowing line 8. |
