| 摘要 |
<p>PURPOSE:To disperse and mix a reducing agent uniformly in waste gas without increasing pressure drop in a process for supplying a reducing agent to combustion waste gas contg. NOx by injecting the reducing agent from a nozzle so as to collide with a header. CONSTITUTION:NH3-contg. air is introduced from an introducing port 12 for fluid contg. a reducing agent, and the air is ejected into waste gas from four nozzles through a header 14 and a branch pipe. The nozzles are provided to the upstream side of the flow of the waste gas than the header, and the reducing agent ejected from the nozzle is deflected by the flow of the waste gas toward the downstream side and is dispersed and mixed in the waste gas and collides in this state with the header, where it is dispersed and mixed uniformly and effectively. Following-up to the variation of the flow rate of the waste gas is performed easily by only controlling the flow rate of the reducing agent correspondingly.</p> |
