Through the excellent flow field design of YOYO Environmental Protection, there is no need to add induced draft fans and the furnace pressure of the heating furnace has not been increased, which saves the owner a lot of energy consumption. Fully automatic intelligent system: This system is a fully automatic intelligent system that accurately measures the amount of reducing agent injection by measuring flue gas flow, temperature, NOx concentration, pressure, target denitrification rate, etc. The injection will be automatically stopped when the urea liquid level is low or the compressed air pressure is low. In the event of an unexpected power outage, compressed air outage or compressed air shutdown, the spray gun will be automatically purged to prevent the spray gun from being blocked, and it will continue to work after returning to normal. The system has a fault self-diagnosis function, and its working status can be viewed in real time. Through real-time data collection of flue gas flow, temperature, NOx concentration, NH₃ concentration, pressure, etc., and precise control through our self-developed metering injection pump and spray gun, the goal of near-zero emissions of NOx and NH₃ can be achieved.