flue gas transport fan

Flue gas transport fans are heavy-duty centrifugal blowers engineered to convey combustion exhaust gases from boilers, furnaces, and kilns through ductwork to emission stacks. They maintain a slight negative pressure in the furnace, preventing flue gas leakage into the workspace.

These fans feature backward-curved impellers and corrosion-resistant housings to withstand acidic condensate and particulate load. Typical airflow ranges from 20,000 to 200,000 CFM at pressures up to 8 kPa. Explosion-proof motors and high-temperature bearings allow safe operation with flue gases up to 350 °C.

Variable frequency drive (VFD) control enables draft regulation, adjusting speed to maintain optimum negative pressure and ensure stable combustion. Split-casing housings and external grease ports simplify service. Flue gas transport fans are critical for efficient boiler operation, emission control, and plant safety.