Complete equipment for denitration method in boiler

[0024] see figure 1 , a complete set of equipment for denitrification in a boiler, including a boiler located in the flue gas pipeline

[0025] Ammonia gas generating device; the ammonia gas generating device includes a urea decomposition chamber 21 and a stirrer; the urea decomposition chamber 21 is fixed on the pipe wall of the flue gas pipeline 1, and there is an ammonia gas outlet 25 above the urea decomposition chamber 21; The agitator includes a motor 23, a stirring shaft 24 and a stirring paddle 22. The stirring paddle 22 extends into the urea decomposition chamber 21, and the motor 23 is fixed on the outside of the pipe wall of the flue gas pipeline 1; Fully decomposed into ammonia gas under high temperature and stirring;

[0026] Gas mixing device; including a flue gas guide pipe 31, a flue gas sleeve 32 and an ammonia gas mixing pipe 33, the flue gas guide pipe 31 is parallel to the flue gas pipeline 1, and the installation position is adjacent to the urea decomposi...

[0029] see figure 1 , as an improvement of the present invention, the complete set of equipment also includes a gas stirring device 34, the stirring paddle of the gas stirring device is arranged between the gas mixing device and the catalyst cage, and the stirring device 34 further mixes the ammonia gas and the flue gas. The nitrogen oxides are mixed evenly.

[0030] The rest of the structure and advantages are exactly the same as in Embodiment 1.

[0032] see figure 1 , as an improvement of the present invention, the complete set of equipment also includes a gas distribution plate 35, the gas distribution plate 35 is a porous plate, fixed on the pipe wall of the flue gas pipeline 1 between the gas stirring device and the catalyst cage 4 , so that the mixed gas can move up evenly.

[0033] The rest of the structure and advantages are exactly the same as in Embodiment 1.