| 摘要 |
PURPOSE:To decompose unreactive residual ammonia in the inside of a denitrification device by arranging a catalyst for removing residual ammonia to the inside of the denitrification device in the rear flow side of a denitrifying part in the dry denitrification device having the denitrifying part wherein ammonia is utilized as a reducing agent. CONSTITUTION:In a dry denitrification device 1 having a denitrifying part 2 wherein ammonia is utilized as a reducing agent, a catalyst 3 for removing residual ammonia is arranged to the inside of the denitrification device 1 in the rear flow side of the denitrifying part 2. This catalyst 3 is utilized by carrying platinum, etc., on an SiO2.Al2O3-based zeolite carrier. As a result, unreactive residual ammonia is decomposed in the inside of the denitrification device and amount of leaked ammonia can be lowered. Thereby amount of ammonia introduced into the denitrification device can be increased and high degree of denitrification is obtained. Therefore the operational range of the denitrification device is extended. |
