Product Overview

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.

Main Applications

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

D-type boiler fan

Typical Technical Parameters

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.

Working Principle

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.

Key Features

Large Airflow Capacity

Designed for high-capacity boiler applications requiring substantial flue gas handling.

High Pressure Capability

Suitable for systems with significant resistance from dust collectors, air preheaters, flue gas treatment equipment, long ducts, dampers, and chimneys.

Heavy-Duty Construction

Large boiler applications can be equipped with reinforced bearings, bases, couplings, shafts, and structural components for continuous industrial operation.

Wear-Resistant Options

For dusty flue gas, wear-resistant impeller and protective configurations can be selected according to dust concentration, particle size, gas temperature, and operating conditions.

High-Temperature Configuration

For elevated-temperature applications, EMS can provide suitable cooling arrangements, bearing configurations, sealing solutions, and heat-resistant materials.