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.

Six Large Centrifugal Fans Functions in Power Plant Boilers by Xianrun Blower

Six Large Centrifugal Fans Functions in Power Plant Boilers by Xianrun Blower

3. ID Fan: ID fan exhausts smoke from boilers, to maintain the boilers negative pressure. The smoke go through the air preheater, after dust collecting, then enter into gas desulfurization system or chimney by ID Fan. 

New Design FD Fans for Boilers

4. Dilution Fan: This centrifugal fan is used for denitration unit, providing air to dilute ammonia in denitrification system. 

High Pressure Blowers for Smelting Furnace

Six Large Centrifugal Fans Functions in Power Plant Boilers by Xianrun Blower

Six Large Centrifugal Fans Functions in Power Plant Boilers by Xianrun Blower

1. FD Fan: FD fan supply secondary air, through air preheater, one part air as surrounding air, filling air and so on, which have effect on fuel nozzle flame, and at the same time, cool fuel nozzle. 

The other part air supply oxygen for boiler combustion, and also supply SOFA and COFA, to adjust the boiler combustion. SOFA is separation over fire air, this is the technology to lower nitrogen oxide during the power plant boilers combustion; COFA is compact over fire air. 

New Design FD Fans for Boilers

2. Primary Air Fan: Take medium speed mill, direct-firing pulverizing system as example, the primary air fan provides primary air, one part go through the air preheater, as hot primary air, the other part air do not go through the air preheater, as cold primary air. 

Hot primary air go through the speed mill, drying and bring the pulverized coal into boiler combustor. The hot primary air mix with cold primary air in the entrance of speed mill, adjust the temperature; ventilate the speed mill.

Coupling Driving FD Fan with High CFM

Large Centrifugal Fan for Power Plant Boilers by Xianrun Blower

Large Centrifugal Fan for Power Plant Boilers by Xianrun Blower

FD Fan: Supply air for boiler combustion; 

Primary Air Fan: Drying and delivery pulverized coal to furnace;

ID Fan (Exhaust Fan): Exhausting out the smoke from boilers. 

In general, 50% capacity allocation, so double large centrifugal fans works together in power plant boilers.

High Efficiency Forced Draft Fan for Boiler

Different Centrifugal Fan Features by Xianrun Blower

Different Centrifugal Fan Features by Xianrun Blower

Centrifugal fan has forward curved blade, radial blade, backward curved blade. 

Large Airflow Backward Curved Fans

1. Forward Curved Blade Centrifugal Fan Features
High pressure, low efficiency, easy scaling. 

2. Radial Blade Centrifugal Fan Features
Simple structure, low cost, high pressure, not easy scaling, low efficiency. 

3. Backward Curved Blade Centrifugal Fan Features
High efficiency, and a certain degree of scaling, high technical requirements. 

Large Capacity Industrial Radial Fans

Xianrun Blower 304 Stainless Steel Centrifugal Fan to France

Xianrun Blower 304 Stainless Steel Centrifugal Fan to France

Industrial Exhaust Fans

Application: Exhausting Air from Kiln 
Material: 304 stainless steel
Air flow: 5000 cmh
Air temperature: 500 centigrade degree
Motor: 2.2 kw
Driving Mode: Belt driving

Outlet Angle: Right 90

Contact us, we can customize types centrifugal fan and blower according to your requirements. 

Custom Industrial Fans And Blowers

How to Confirm the Centrifugal Fan Outlet Angle? ---Xianrun Blower

How to Confirm the Centrifugal Fan Outlet Angle? ---Xianrun Blower

From the motor side to look the centrifugal blower, 

1. If the centrifugal fan impeller clockwise rotation, it is right. The air outlet towards to the left horizontally: right 0, the angle changes along the clockwise direction. 

2. If the centrifugal fan impeller anti-clockwise rotation, it is left. The air outlet towards to the right horizontally: left 0, the angle changes along the anti-clockwise direction. 

Coupling Driving FD Fan with High CFM

Xianrun Blower Stainless Steel Centrifugal Fan

Xianrun Blower Stainless Steel Centrifugal Fan

The stainless steel centrifugal fan is made of 304 stainless steel, with the features of high temperature resistance, acid-resistant, alkali-resisting, corrosion resistance, anti-explosion, high efficiency, low noise, stable pressure curve, wide application, etc.

Stainless Steel Material High Corrosive Fan

Widely applied in corrosive gas place, such as chemical industry, electroplate factory, oxidation plant, power plant, laboratories, environmental protection equipment. 
Or using in high temperature situation, such as muffle furnace, dryer, hot air circulation equipment, industrial machinery, food machinery, chemical machinery and so on.   

Stainless Steel Material High Corrosive Fan

Xianrun Blower can customize the stainless steel centrifugal fan according to customers' requirements.

Stainless Steel Material Anti-corrosion Fans

Centrifugal Fan Surface Anti-corrosion Measures by Xianrun Blower

Centrifugal Fan Surface Anti-corrosion Measures by Xianrun Blower

A basic thinking of corrosion control is to isolate from corrosion environment.                       In centrifugal fan, generally using surface anti-corrosion measures, such as galvanization, chromium plating, electroless plating, coating epoxy resin, etc, these measures are effective in many environments. 

3000 cfm High Corrosive Fans for Chemical Plant

But for the rotating parts, please pay attention to an important phenomenon: the basis material and plating are two kinds material, with different coefficient of linear expansion; 
the rotating parts will have different deformation during the rotating elastic deformation, resulting in large amount of micro crack; If the phenomenon exist, which will accelerate the corrosion of centrifugal fan impeller. So surface anti-corrosion measures for rotating parts need careful attention. 

Custom heavy Duty Industry Fan from China Supplier

Large Centrifugal Fans for 5000t/d Cement Production Line by Xianrun Blower

Large Centrifugal Fans for 5000t/d Cement Production Line by Xianrun Blower

No.5 Cement Raw Material Mill Recirculation Fan

Quantity: 2 Sets

Centrifugal fan impeller diameter: About 2450 mm

Driving Mode: Double suction coupling driving

Airflow: 250000 m3/h

Air pressure: 3500 pa

Air temperature: Normal 70 centigrade degree

              Max 150 centigrade degree

Dust content:  120g/Nm3

Speed adjustment: frequency control

Motor: 355 KW

Voltage: 10 KV

High Temperature Fan for Cement Rotary Kilns

No.6 Cement Mill Powder Dust Collecting Fan 

Quantity: 2 Sets

Centrifugal fan impeller diameter: About 2330 mm

Driving Mode: Double suction coupling driving

Airflow: 250000 m3/h

Air pressure: 5800 pa

Air temperature: Normal 60~85 centigrade degree

              Max 120 centigrade degree

Dust content: ≤ 50g/Nm3

Speed adjustment: frequency control

Motor: 560 KW

Voltage: 10 KV

Industrial Fans and Blowers for Cement Plant

Large Centrifugal Fans for 5000t/d Cement Production Line by Xianrun Blower

For any needs, contact Xianrun Blower! 

No.3 Kiln Head Electric Dust Collecting Fan

Quantity: 1 Set

Centrifugal fan impeller diameter: About 2200 mm

Driving Mode: Double suction double support

Airflow: 740000 m3/h

Air pressure: 3800 pa

Air temperature: Normal 250 centigrade degree

              Max 400 centigrade degree

Dust content: ≤ 50g/Nm3

Speed adjustment: frequency control

Motor: 710 KW

Voltage: 10 KV

 

Industrial Fans and Blowers for Cement Plant

No.4 Pulverized Coal Mill Ventilation Fan

Quantity: 1 Set

Centrifugal fan impeller diameter: About 1680 mm

Driving Mode: Single suction coupling driving

Airflow: 90000 m3/h

Air pressure: 8000 pa

Air temperature: Normal 60~85 centigrade degree

              Max 120 centigrade degree

Dust content: ≤ 50g/Nm3

Speed adjustment: frequency control

Motor: 280 KW

Voltage: 10 KV

High Temperature Centrifugal Fans for Cement Plant

Detail Parameters of Large Centrifugal Fan for 5000 t/d Cement Production Line

Detail Parameters of Large Centrifugal Fan for 5000 t/d Cement Production Line 

For any needs, contact Xianrun Blower. 

No.1 Raw Material Grinding Mill Exhaust Fan

Quantity: 2 Sets

Centrifugal fan impeller diameter: About 3000 mm

Driving Mode: Double suction double support

Airflow: 450000 m3/h

Air pressure: 10500 pa

Air temperature: Normal 80~90 centigrade degree

           Max 150 centigrade degree (last more than 15 min)

Dust content: ≤100g/Nm3

Speed adjustment: frequency control

Motor: 1800 KW

Voltage: 10 KV

High Temperature Fan for Cement Rotary Kilns

No.2 Kiln End Bag House Fan

Quantity: 1 Set

Centrifugal fan impeller diameter: About 2380 mm

Driving Mode: Double suction double support

Airflow: 950000 m3/h

Air pressure: 3800 pa

Air temperature: Normal 110 centigrade degree

           Max 250 centigrade degree

Dust content: ≤ 50g/Nm3

Speed adjustment: frequency control

Motor: 1400 KW

Voltage: 10 KV

High Temperature Fan for Cement Rotary Kilns

Xianrun Blower Provides Large Centrifugal Fans for 5000t/d Cement Production Line

Xianrun Blower Provides Large Centrifugal Fans for 5000t/d Cement Production Line

Industrial Fans and Blowers for Cement Plant

Item	Centrifugal Fan Category	Unit	Quantity
1	Raw Material Grinding Mill Exhaust Fan	set	2
2	Kiln End Bag House Fan	set	1
3	Kiln Head Electric Dust Collecting Fan	set	1
4	Pulverized Coal Mill Ventilation Fan	set	1
5	Cement Raw Material Mill Recirculation Fan	set	2
6	Cement Mill Powder Dust Collecting Fan	set	2
	Amount		9

Centrifugal Fan Driving Modes Advantages and Disadvantages By Xianrun Blower

Centrifugal Fan Driving Modes Advantages and Disadvantages By Xianrun Blower

A Mode: Direct Driving
The impeller of centrifugal fan connects to the motor shaft directly, this is suitable for small airflow and pressure centrifugal blower. 
Advantage: saving the parts (such as belt pulley, belt, coupling, etc.), reliable performance.
Disadvantage: fixed speed. 

High Quality ID Fan for Ventilation

C Mode: Belt Driving
The impeller connects to motor shaft by belt pulley.
Advantage: adjustable speed, motor installation position is flexible. 
Disadvantage: Some parts are easy to break down, and need updating maintenance. 

High Temperature Fan For Metallurgical Factory

D Mode: Coupling Driving
The impeller connects to motor shaft by coupling, coupling drive centrifugal fan for high temperature, large airflow and high pressure condition. 
Advantage: stable operation, high efficiency. 
Disadvantage: fixed speed, high cost.

Wear Resistant ID Fan