| 摘要 |
PURPOSE:To provide a denitration device which can control in a constant manner the ratio of a reducer to nitrogen oxides in a denitration reactor at all times and improve the denitration performance. CONSTITUTION:An analyzer 6 for detecting the ratio of a reducer to nitrogen oxides is installed, and also a controller 9 for outputting opening degree command signals 8a, 8b, 8c and 8d to flow regulating valves 4a, 4b, 4c and 4d arranged in the middle of injection pipings 3a, 3b, 3c and 3d for injecting a reducer into a denitration reactor 2 based on detecting signals 7a, 7b, 7c and 7d issued from the analyzer 6 is installed. |
