Industrial Processes Needing Induced Draught Fans
                     INDUSTRIAL PROCESSES NEEDING INDUCED DRAUGHT FANS
Neel Rao
Writes on Reitzindia massive industrial fans, FD fan or 
Forced draft fan
Role of ID Fans in industrial airflow
ID fans are essential in the regulation of the movement of air and 
exhaust gas in nearly all industrial processes where there is heat or 
combustion, or where there is gas treatment. The major role of 
Industrial draught fans in manufacturing plants is to evacuate hot 
gases, fumes, and combustion by-products out of boilers, furnaces, 
kilns, or incinerators and safely exhaust the gases via pollution 
control systems and chimneys.
By generating a suitable negative pressure inside the combustion 
chambers, the ID fans keep the gases flowing through the system 
instead of escaping to the outside. This regulated exhaust flow 
stabilizes pressure, enhances combustion of fuel, and also assists in 
safeguarding the equipment and the environment.
•Power generation: Keeping boilers breathing
•In thermal and coal-fired power plants, ID fans are invaluable. They collect 
flue gases in the boiler furnace and make sure that they pass through 
several heat recovery and filtration units, such as economizers, air 
preheaters, and electrostatic precipitators, and out of the chimney. Cost and 
performance of such fans directly affect the performance and efficiency of 
the entire power plant, as well as its impact on the environment.
•Cement production: Kiln exhaust and heat recovery
•The production of cement requires constant processing at high 
temperatures under rotary kilns and preheater towers. Here, hot gases with 
dust and particulates are removed through the use of ID fans and sent to 
dust collectors and heat recovery systems. These fans ensure stable 
operation of kilns, safeguard the mechanical parts, and assist waste-heat 
recovery to achieve more energy efficiency by precise control of the gas 
flow.
Steel and metallurgical plants: Working with heavy fumes
ID fans are essential in the metallurgical industry in a bid to ensure good and healthy 
working conditions. They are found in blast furnaces, electric arc furnaces, and sinter 
plants, and they eliminate the flue gases, metallic fume, and fine particulates 
produced in the smelting and refining process. With the proper support of the draft, 
these fans are used to control the combustion air, furnace temperature, and 
safeguard downstream filtration systems.
Chemical and petrochemical facilities: Controlling emissions
ID fans are also used in process exhaust and air pollution control in chemical and 
petrochemical industries. They pull volatile vapors, acidic fumes, and combustion 
gases using scrubbers, incinerators, or catalytic converters. The strict compliance 
with the rigid emission requirements and safe and stable operating conditions is 
guaranteed by precise flow rates and suction pressure control.
Waste incineration and pollution control
The center of waste incineration plants consists of ID fans, which carry the 
combustion gases through scrubbers, filters, and heat exchangers and discharge 
them into the atmosphere. The fan ensures full treatment of the gas by keeping the 
suction constant so that the pollutants do not escape untreated. This is true in larger 
pollution control systems–where the ID fan is the driving force in the air purification, 
filtration, and heat recovery.
Pulp, paper, and material industry
ID fans are used in pulp and paper mills to eliminate flue gases in recovery boilers 
and lime kilns, and to maintain combustion efficiency and prevent pressure build-up.
 In the same manner, these fans are used to remove hot air and fumes in furnaces in 
glass, ceramics, and foundry operations to provide controlled temperatures and a 
safe working environment. They are not only safety devices but also enhance the 
quality of products, uniformity of drying, and energy consumption.
Conclusion
The ID fans of the modern industrial design are not merely exhaust systems but 
highly engineered performance systems, designed to handle the flow of air, to 
maximize the use of energy, and to allow cleaner production. In a power plant or in a 
glass furnace, the constant draught maintains an effective, safe, and sustainable 
breathing of industrial processes.
About REITZINDIA
Reitz India has set a benchmark to deliver high quality fans for heavy duty industries 
which can work at precise operating conditions like high temperatures and 
pressures. Reitz offer idealistic Centrifugal Fan and Centrifugal blower design that 
can be used in all large scale process industries like cement, iron & steel, power 
plants, fertilizers/ chemicals and more.
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