The Boiler Centrifugal Forced Induced Draft Fan is an industrial centrifugal fan designed for boiler ventilation, combustion air supply, flue gas extraction and draft control.
Depending on the system configuration, the GY5-51 can be used as either a Forced Draft (FD) Fan or an Induced Draft (ID) Fan. It is suitable for industrial boilers, steam boilers, biomass boilers, waste heat boilers, heating systems and boiler flue gas treatment systems.
EMS provides customized fan solutions based on airflow, pressure, temperature, dust concentration, system resistance, material requirements and installation conditions.
Industrial Boiler Forced Draft
Industrial Boiler Induced Draft
Boiler Combustion Air Supply
Boiler Flue Gas Exhaust
Steam Boiler Ventilation
Biomass Boiler Systems
Waste Heat Boiler Systems
Boiler Dust Collection
Flue Gas Desulfurization
Denitrification Systems
District Heating
Thermal Energy Systems
CHP Plants
Industrial Heating Systems
| Parameter | Typical Range |
|---|---|
| Product Type | Centrifugal Forced & Induced Draft Fan |
| Airflow | 3,000–200,000 m³/h |
| Total Pressure | 1,000–6,000 Pa |
| Motor Power | 5.5–500 kW |
| Fan Speed | 730–2,900 rpm |
| Gas Temperature | Up to 250°C typical |
| Drive Type | Direct / Belt / Coupling |
| Fan Type | Single-Suction Centrifugal Fan |
| Impeller Material | Carbon Steel / Wear-Resistant Steel |
| Casing Material | Carbon Steel / Customized |
| Bearing | Heavy-Duty Industrial Bearing |
| Installation | Horizontal / Customized |
| Frequency | 50 Hz / 60 Hz |
| Operation | Continuous Duty |
Note: These are typical engineering reference ranges, not fixed specifications for every GY5-51 configuration. Final selection should be based on the actual operating point and system conditions.
Ambient Air → GY5-51 FD Fan → Air Duct → Boiler Furnace → Combustion
In FD service, the fan supplies combustion air to the boiler furnace and provides the required airflow and pressure for stable combustion.
Boiler → Dust Collector → Flue Gas Treatment → GY5-51 ID Fan → Chimney
In ID service, the fan extracts flue gas from the boiler system and overcomes the pressure losses of the dust collector, flue gas treatment equipment, ducts and chimney.
The GY5-51 series can be configured for both FD and ID boiler applications, depending on the system design.
The centrifugal impeller provides reliable airflow and pressure performance for continuous industrial operation.
The fan can be selected for boiler systems incorporating dust collectors, FGD, DeNOx equipment and long flue-gas ducts.
Depending on the required speed, power and installation arrangement, EMS can provide:
Direct Drive
Belt Drive
Coupling Drive
For dusty ID applications, wear-resistant impellers, liners and reinforced structures can be provided according to the dust characteristics.
For elevated-temperature flue gas, EMS can configure suitable bearings, cooling arrangements, high-temperature materials and sealing solutions.
| Item | Forced Draft Fan | Induced Draft Fan |
|---|---|---|
| Function | Supplies combustion air | Extracts flue gas |
| Location | Upstream of furnace | Downstream of boiler |
| Medium | Air | Flue gas |
| Dust Concentration | Usually low | Usually higher |
| Temperature | Usually lower | Usually higher |
| Main Objective | Stable combustion air supply | Boiler negative pressure and exhaust |
| Typical Application | Combustion system | Flue gas system |
The GY5-51 can be used in:
Industrial Boiler Plants
Steam Boiler Systems
Biomass Boiler Plants
Waste Heat Boiler Plants
District Heating Plants
CHP Plants
Industrial Heating Systems
Boiler Dust Collection Systems
Flue Gas Treatment Systems
Thermal Energy Facilities
For accurate GY5-51 selection, customers should provide:
Boiler Capacity
Fuel Type
Required Airflow
Required Pressure
Gas Temperature
Gas Density
Dust Concentration
Flue Gas Composition
Total System Resistance
Duct Size and Length
Dust Collector Pressure Loss
FGD / DeNOx Pressure Loss
Installation Altitude
Motor Voltage and Frequency
Operating Hours
Material Requirements
Drive Type
Noise Requirements
Boiler capacity alone is not sufficient for accurate fan selection. The actual fan duty point should be determined from combustion requirements, flue gas volume and total system resistance.
EMS provides complete industrial fan solutions, including:
Fan Selection
Airflow and Pressure Calculation
Industrial Fan Customization
Impeller Design
Material Selection
Motor Matching
Drive System Selection
Wear-Resistant Design
High-Temperature Configuration
VFD Configuration
Factory Testing
Export Packing
Installation Guidance
Technical Support
Spare Parts Supply