| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a non-catalytic denitrification method and a non-catalytic denitrification device for in-boiler gas, capable of preventing increase of denitrifying agent consumption by reduction of denitrification efficiency generated by fluctuation of a gas temperature condition inside a boiler, and performing prevention of transfer of a bad smell to flying ash or prevention of generation of white smoke generated by a leak of unreactive ammonia. <P>SOLUTION: In this non-catalytic denitrification method using urea water or ammonia water as a denitrifying agent and denitrifying the in-boiler gas, a nozzle is changed over to only a denitrifying agent blowing nozzle present in an optimum denitrifying agent blowing position among denitrifying agent blowing nozzles 9a-9e disposed in a plurality of places of the boiler 1, blowing the denitrifying agent into the boiler according to an operation load situation to blow the denitrifying agent into the boiler 1. The denitrifying agent is blown from the denitrifying agent blowing nozzle disposed in the place of a maximum temperature among the nozzles having gas temperature of 800-950°C in the nozzles inside the boiler. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
