The GY6-51 Large Capacity Boiler Draft Fan is a centrifugal industrial fan designed for large-capacity boiler systems, high-volume flue gas extraction, and demanding boiler draft applications.
The fan is suitable for large industrial boilers, thermal energy systems, CHP plants, district heating systems, and other high-capacity combustion facilities. Depending on the system design, the GY6-51 can be configured for induced draft and flue gas exhaust duties.
EMS provides customized fan selection based on boiler capacity, flue gas volume, system resistance, gas temperature, dust concentration, flue gas treatment equipment, and operating conditions.
The GY6-51 Large Capacity Boiler Draft Fan is suitable for:
Large Industrial Boilers
High-Capacity Steam Boilers
Thermal Power Systems
CHP Plants
District Heating Systems
Industrial Heating Plants
Boiler Flue Gas Exhaust
Boiler Dust Collection Systems
Flue Gas Desulfurization Systems
Flue Gas Denitrification Systems
Industrial Energy Systems
Large Boiler Ventilation Systems
| Parameter | Typical Range |
|---|---|
| Product Type | Large Capacity Boiler Draft Fan |
| Fan Type | Centrifugal Boiler Fan |
| Airflow | 20,000–300,000 m³/h |
| Total Pressure | 2,000–8,000 Pa |
| Motor Power | 30–800 kW |
| Fan Speed | 730–1,450 rpm |
| Gas Temperature | Typically up to 250°C |
| Drive Type | Coupling / Belt Drive |
| Impeller Type | Centrifugal |
| Casing Material | Carbon Steel / Customized |
| Impeller Material | Carbon Steel / Wear-Resistant Steel |
| Bearing | Heavy-Duty Bearing Assembly |
| Installation | Horizontal |
| Duty | Continuous Operation |
| Application | Boiler Draft / Induced Draft |
The above figures are typical engineering reference ranges rather than fixed specifications for every GY6-51 configuration. Final airflow, pressure, speed, motor power, temperature rating, and materials should be determined according to the actual boiler and flue gas system.
The GY6-51 uses a centrifugal impeller to extract and transport boiler flue gas.
As the impeller rotates, flue gas is drawn into the fan inlet and accelerated radially outward by centrifugal force. The fan casing converts part of the velocity energy into pressure, allowing the gas to overcome resistance in downstream equipment and discharge through the flue gas system.
A typical large-boiler arrangement is:
Boiler → Air Preheater → Dust Collector → FGD / DeNOx → GY6-51 Draft Fan → Chimney
The fan continuously extracts flue gas while helping maintain the required furnace pressure.
Designed for high-capacity boiler applications requiring substantial flue gas handling.
Suitable for systems with significant resistance from dust collectors, air preheaters, flue gas treatment equipment, long ducts, dampers, and chimneys.
Large boiler applications can be equipped with reinforced bearings, bases, couplings, shafts, and structural components for continuous industrial operation.
For dusty flue gas, wear-resistant impeller and protective configurations can be selected according to dust concentration, particle size, gas temperature, and operating conditions.
For elevated-temperature applications, EMS can provide suitable cooling arrangements, bearing configurations, sealing solutions, and heat-resistant materials.
The fan can be matched with dust collectors, air preheaters, FGD systems, DeNOx systems, flue gas treatment equipment, and chimneys.
GY6-51 fans can be used in:
Large Industrial Boiler Plants
Thermal Power Plants
CHP Plants
District Heating Plants
Industrial Heating Plants
Large Steam Boiler Systems
Biomass Boiler Systems
Waste Heat Boiler Systems
Boiler Flue Gas Treatment Systems
Industrial Energy Facilities
Large-capacity boiler draft fan selection should consider the complete flue gas system.
Important parameters include:
Boiler Capacity
Fuel Type
Flue Gas Volume
Required Fan Pressure
Flue Gas Temperature
Dust Concentration
Flue Gas Composition
Air Preheater Resistance
Dust Collector Resistance
FGD System Resistance
DeNOx System Resistance
Duct Length
Duct Diameter
Altitude
Motor Voltage
Frequency
Operating Hours
Material Requirements
Fan Installation Layout
For large boiler systems, actual flue gas volume and total system resistance are two of the most important parameters for correct fan selection.
EMS provides project-based engineering support including:
Boiler Draft Fan Selection
Induced Draft Fan Selection
Airflow and Pressure Calculation
System Resistance Calculation
Motor Selection
Impeller Design
Wear-Resistant Design
High-Temperature Configuration
Bearing Configuration
Coupling / Belt Drive Selection
Dust Collector Matching
FGD / DeNOx System Matching
Electrical Control System
VFD / Soft Starter Options
Installation Guidance
Technical Documentation
Export Packaging