The Air Nozzle is an important part of the circulating fluidized bed boiler, and it is a vulnerable part under high temperature and high wear in the furnace. The quality of the air nozzle directly affects the fluidization and combustion stability of the boiler, and is a guarantee for the safe operation of the boiler.

The function of the boiler hood:
1. Support the bed material together with the air distribution board in cold state and in operation
2. Maintain uniform air distribution and stable fluidization
3. Avoid fluidization dead zone
4. Prevent the deposition of large particles
5. Generate reasonable resistance.