Self made urea stripping spray gun
A technology field for SCR denitrification equipment, specifically involving an SCR denitrification spray gun.
The invention relates to the technical field of SNCR denitration equipment, in particular to a SCR denitration spray gun, which includes a urea spray gun pipe and an air pipe outside the urea pipe. The front end of the urea solution spray pipe is equipped with a nozzle, and the front end of the air pipe is connected by an air nozzle thread with a silicon nitride cover outside the ammonia spray nozzle. The gap between the ammonia spray pipe body, the air spray pipe body and the ammonia spray pipe forms a power assisted spray air duct, which helps the ammonia spray out of the nozzle into fog. The ammonia spray nozzle, air spray nozzle, and nozzle can be cooled in a timely manner. The temperature inside the boiler is high, and the interior is filled with dust particles, all of which are flowing at high speed. At high temperatures, coupled with the wear of dust particles on the nozzle, the denitrification spray gun is easily damaged. In response to this situation, the self-developed wear-resistant denitrification spray gun has the following advantages:
1. The new wear-resistant denitrification spray gun adopts high-strength wear-resistant alloy, and its service life is 5 to 6 times that of ordinary denitrification spray guns.
2. Ordinary denitrification spray guns mix gas and liquid at the nozzle to form atomization. Once the nozzle is worn out, the spray gun will lose its atomization function, and the liquid cannot be atomized. When the liquid touches the inner wall of the boiler, it will cause damage to the boiler casting material. The new wear-resistant denitrification spray gun adopts atomization technology at the tail of the gun body. An additional silicon nitride sheath is added to protect the fan-shaped nozzle from damage. Simply put, the gas and liquid are fully mixed at the tail of the spray gun. Even if the nozzle is damaged, the sprayed liquid can still maintain good atomization effect, which not only does not cause any damage to the boiler, but also maintains good denitrification effect.
