High Temperature Centrifugal Fan

Some of the industrial facilities like cement kilns, glass furnaces, steel reheat furnaces, waste incinerators and coke oven batteries need to operate at airstream temperatures. A standard centrifugal fan cannot handle it continuously for more than a few hours no matter how good quality it is. An ordinary carbon steel loses about half of its yield strength around 600°C high temperatures. For this impact, an impeller of a standard centrifugal fan becomes deformed by the centrifugal force, changing the geometry shape and losing dynamic balance and finally vibration leads to mechanical failure. A bearing exceeds its rated temperature when it is exposed near 600°C airflow. Which may cause the lubricant breakdown and the bearing to seize. Some facilities like cement kilns or glass furnaces, need to operate 24 hours a day. A mid-campaign fan failure not only costs the fan but also the entire production campaign.

High Temperature Centrifugal Fan is purposefully engineered for continuous operation at high temperatures up to 600°C. All materials of this fan are selected in accordance with the thermal environment. The impeller is made from heat-resistant alloy steel that maintains adequate yield strength and creep resistance at operating temperatures. The extended shaft construction maintains a safe distance between bearings and hot airflow. Shaft cooling disks are finned aluminum heat sinks mounted between the housing and the inboard bearing. It's standard on all units above 150°C. Labyrinth shaft seals prevent hot gases from moving along the shaft towards the bearing housing. Water-cooled bearing housings features are standard for airstream temperatures above 400°C. A fixed anchor bearing keeps the shaft axially stationary and other bearings are expansion bearings. That allows for free thermal shaft elongation, a factor often ignored by inexperienced engineers. Which can lead to premature bearing failure.

The High Temperature Centrifugal Fan belongs to our high-efficiency Y-series category. It can provide 80–90% peak efficiency in a thermal environment. Airflow covers up to 300,000 m³/h with up to 29,800 Pa of pressure. It also offers a 450 mm to 2,100 mm diameter impeller and up to 1,000 kW motor power. The standard maximum media temperature is 600°C/1100°F. Which can operate 24/7 under any harsh environment.