High-temperature induced draft fans use heat-resistant steel impellers with water/air-cooled bearing housings for media up to 250-650 C - drawing and conveying hot flue gas in kilns, boilers, drying lines and dust collection systems.
The ID fan consists of a heat-resistant alloy steel impeller (dynamically balanced), casing, water- or air-cooled bearing housing and drive set. The impeller retains strength and stiffness at temperature, while cooled bearings stay within safe limits. VFD motors and soft starters allow airflow adjustment to process conditions.
The motor drives the impeller through coupling or belt; gas gains kinetic and pressure energy by centrifugal force and exits the volute while the inlet draws in flue gas continuously. Water-cooled bearings block heat conduction for long bearing life in hot service.
For ceramic and brick kilns, boiler flue gas, drying lines and upstream of high-temperature dust collectors. Selection calculation (flow/pressure/media temperature), foundation drawings and commissioning support.
All data above are obtained under specific test conditions; the actual solution must be engineered to site conditions. AIFILTECH provides custom design and sizing based on actual gas volume, temperature, dust characteristics and emission limits.
