The secondary air fan is a critical component of the combustion air system in power plant boilers. Its primary function is to provide a precisely controlled flow of air to the combustion zone above the burner, facilitating complete fuel combustion, optimizing flame shape, reducing nitrogen oxide (NOₓ) formation, and enhancing overall boiler thermal efficiency. Operating in high-temperature environments (handling preheated air typically between 250°C and 400°C), it must ensure long-term stability and reliability under demanding conditions.
| Typical Performance Parameters | Conveyed Medium | Structural Type |
|---|---|---|
| Air volume: 100,000~165,000 m³/h Air pressure: 11,000~20,000 Pa Operating temperature: 20℃ |
Air | Double-support centrifugal type |