Large Centrifugal Fans Functions in Power Plant Boilers by Xianrun Blower

Large Centrifugal Fans Functions in Power Plant Boilers by Xianrun Blower

5. Seal Fan: The air is from cold primary air, the seal fan sending to coal machinery and coal mill; as for the coal mill, the sealing air is used in grinding roller, roller bowl mill, spring loaded and other parts. 

New Design FD Fans for Boilers

6. Boost Fan: One part air enters into boost fan from ID Fan, the other part air enters into chimney by-pass. The by-pass is not allowed to open during the power unit working, otherwise, the smoke air without desulfurization environmental protection can not reach up to standard. 

Stainless Steel Material High Corrosive Fan

The air from boost fan will enter into gas desulfurization system, in the simulation of flue gas desulfurization and denitrification system of large-scale thermal power station, boost fan is the core of flue gas system.

Advantage of Centrifugal Fan with Variable Frequency Motor by Xianrun Blower

Advantages of Centrifugal Fan with Variable Frequency Motor by Xianrun Blower:

1. Automatic control.Reduce the labour intensity, reduce the system maintenance time, improve production, reduce operating costs.

2. Control the centrifugal fan motor starting current.Conventional centrifugal fan will produce 7-8 times current of motor at the start,then generate heat, and reduce the service life; while variable frequency motor can reduce the maintenance cost, and increase service life.

3. Reduce the electric power line voltage fluctuation.Conventional motor startup will cause current surge, and voltage fluctuations, all that leads to voltage sensitive equipment failure or abnormal work; variable frequency motor because can start step by step from zero frequency zero voltage,and avoid failure.

High Temperature Industrial ID Fans for Boilers

4. Adjust centrifugal fan air volume smoothly; and make industrial fans and blowers work in the best working point; blower performance curve conforms to the system; improve the centrifugal fan efficiency; avoiding surge; stabilize the furnace pressure; meet the requirements of the work environment.

5. Low speed operation can reduce centrifugal fan blade wear, reduce noise, prolong the life of the industrial blowers and motors.

6. Good energy saving effect. Due to the air flow is in direct proportion ratio to the square of rotational speed, and power consumption is in direct proportion ratio to the cube of rotational speed, the centrifugal fan with variable frequency motor is more energy efficient. 

Coupling Driving ID Fan for Cement Plant

The Features of Industrial Fans and Blowers in Power Plant

Centrifugal Fan and Axial Flow Fan in Boilers of Steam Power Plant

xianrun industrial fans and blowers

Situation	Application	Fan Type	Medium	Features
Boilers of Steam Power Plant	ID Fan  (induced  draft fan)	Centrifugal fan, axial flow fan	Boiler smoke	When burning heavy oil, pay attention to the corrosion by sulfur composition in the exhausting; when burning coal, pay attention to the wear caused by dust. It needs to equip dust-extraction device in front of ID fan, and high efficiency motor.
	FD Fan  (forced  draft fan)	Centrifugal fan, axial flow fan	Air	As for the axial flow fan, utility-type unit can use adjustable blade axial flow fan. During the forced draft, because of high pressure, high nose, it is better to use silencer device.
	Coal dust exhausting	Centrifugal fan	Coal dust	According to the purpose, the coal dust exhausting fan can be divided into two kinds. One, pulverized coal storage bin type exhausting fan. It blows pulverized coal from side into furnace. The coal dust do not go through the fan, so the fan pressure needs to be much high.
	Coal dust exhausting	Centrifugal fan	Coal dust	The other is straight type dust blower. It sends the coal dust into furnace directly. Because of the impeller and casing wear, the fan needs to processed with wear-resistant treatment.
	Gas recirculating fan	Centrifugal fan	Boiler fume	This model fan exhausts high temperature boiler fume, so the material and structure should be heat resistant.
	Smoke extraction fan for desulphurization	Centrifugal fan	Boiler fume	This fan is installed in front of desulphurization equipment.
	Atomic energy furnaces  ventilation fan	Centrifugal fan, axial flow fan	Air	For the safety of atomic energy furnaces, the fan should have high quality and reliable.

wear-resistant treatment