High Temperature Centrifugal Fan by Xianrun Blower

High Temperature Centrifugal Fan by Xianrun Blower

The high-temperature centrifugal fan consists of the motor, the variable speed device, the centrifugal fan body, the inlet flow control device, the slow-moving device and lubrication system.

1. the motor: generally, it is high temperature motor.
2. the variable speed device: generally, using hydraulic coupling, SCR cascade frequency control and frequency control, speed ratio is more than 2: 1.

High Temperature Fan for Cement Rotary Kilns

3. the centrifugal fan body: mainly includes the rotor group (mainshaft, impeller), casing and air inlet. The rotor is key component of centrifugal fan, so it must be processed with non-destructive inspection strictly and high-precision dynamic balance test to ensure the centrifugal fan smooth operation.

4. inlet flow control device: controlling the airflow by the adjusting door and electric actuator.
5. slow-moving device: composed of motor and high-speed ratio gear box, to ensure the rotor won't bend when the high-temperature fan stop operation.

High Temperature Fan for Cement Rotary Kilns

Xianrun Blower Cement Kiln High Temperature Centrifugal Fan

Xianrun Blower Cement Kiln High Temperature Centrifugal Fan

The Reason of Centrifugal Fan Impeller Ash Deposition

The main reason of the centrifugal fan impeller ash deposition is that, when the waste exhaust flow through the impeller, a large number of fine dust particles collide with impeller non-working surface and blade trailing edge near the working face in impeller, then deposite in the centrifugal fan impeller; what's more, dust particles are more sticky under high temperature, so the deposition chance increase. 

High Temperature Fan for Cement Rotary Kilns

Thus, the waste exhaust gas temperature and airflow speed play an important role in the ash deposition process, when the exhaust temperature of the cement kiln preheater reach over 300 centigrade degrees, then high temperature centrifugal fan will begin to happen dust deposition and crust frequently.

High Temperature Fan for Cement Rotary Kilns