| abstract |
The invention discloses an anti-blocking system for supplying ammonia by dust-free dilution air. Hot primary air to dilute the air pipeline, ammonia-air mixer, ammonia supply pipeline, diluted ammonia pipeline, nozzle, horizontal flue deflector 1. After replacing the dilution air source, the dilution air no longer carries furnace ash, and the dilution air duct Road elbows, ammonia-air mixers, ammonia supply branch pipes and nozzles are no longer blocked, and ammonia gas and nitrogen oxides in flue gas are well mixed, so that large particles of soot in flue gas are strongly concentrated in the vertical flue. Mixing, the uneven distribution of air flow in the flue is improved, the unevenness of the soot concentration in the cross section above the catalyst is reduced from 87.12% to 69.19%, and the soot will pass through the catalyst layer more uniformly. |