Gas fumes are passed through air scrubber systems which filters impurities out of the contaminated air stream. Fans and pressure blowers are used on either the dirty side of the air stream to push the toxic air into the fume scrubber or they can be used to pull and exhaust the clean air from the high pressure gas scrubber system. CBC Blower offers both clean air ventilators and dirty air fans from special alloy materials and protective chemical coatings for extreme corrosion protection while performing at the high efficiency within the air scrubber blower.

Engineering of through the wall exhaust fans, airflow exhaust ventilators, fume hood exhaust fans, roof / wall supply blowers, paint booth ventilation fans, high pressure air blowers, air pressure blowers, high temperature air blowers, rotary air blowers, air fan-blowers systems, roof blowers, roots blowers, oven / dryer exhaust ventilators, heavy-duty ventilation fans, spray booth exhaust fans, New York blowers, Dayton fans, Chicago blowers, American Coolair ventilators, ACME ventilators, Twin City fans, Aerovent fans, Cincinnati blowers.


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Induced Draft Fan

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Cooling Blowers

Tube Axial Fans &
Man Coolers

Furnace Blowers / Combustion Blowers

    Air blowers required in combustion application are generally high pressure blowers. These high pressure blowers are required for supply of combustion air (combustion blowers) and heated combustion air exhaust through the furnace.  Depending upon the inlet air temperature Combustion Blower could be:

  • Direct Mounted Blower (impeller directly mounted on the motor shaft)
  • Indirectly Mounted Blower (impeller indirectly connected with motor shaft via belt drive)

    High pressure blowers with inlet air temperature below 180 deg. F and direct mounting are compact in construction and run with high speed motors. These blowers are mostly used for supplying fresh air to furnace for combustion purposes. 

    Furnace blowers with inlet temperature above 180 deg. F are indirect belt drive blowers. Air blowers for Furnace / Combustion applicatiosn with inlet air temperature above 800 deg. F are manufactured from Stainless Steel materials.

Designers of Madok heat exchangers, stainless steel pressure blowers, induscr draft ventilators, force draft ventilators, leader ventilators, high pressure centrifugal blowers, high CFM axial fans, high air flow ventilators, dust collecting fans, radial pressure blowers, vacuum blowers & fans, stainless steel ventilation fans, air handling fans, airhandling blowers, FRP pressure blowers, SST pressure fans, oven & dryer circulation fans, drying blowers. Heavy duty custom built industrial and process fans blowers and blowing systems in Buffalo, New York. Sales of Chicago Blower, Canada corrosion resistant, high pressure and high temperature sealed fan/blower ventilators sale.
Process Fans Used in Power Plants

In power plants the heat energy is generated by boilers. Boilers use industrial fans for the following reasons:

    To supply air required for combustion
    Remove products of combustion
    Deliver fuel to the burners
    Circulate gases for the better heat transfer

Depending on these four functions, fans in power plants are divided into three main types. They are draft fans (induced draft fans, forced draft fans), primary air fans and gas recirculation fans.

Draft Fans

Draft fans in power plants are used to maintain the flow of gases in the boiler. In a balanced draft system, boiler uses both induced draft placed at outlet and a forced draft placed at the inlet.

Forced Draft (FD) Fans

Forced draft fans in boilers are used to supply air which is necessary for fuel combustion. FD fans push the air through combustion air supply system and into the furnace.

FD fans are more efficient fans in power plants as they operate in a cleaner operating conditions.

Most common type of fans that are used as FD fans are radial airfoil centrifugal fans or variable pitch axial fans.

Induced draft (ID) fans

Induced draft fans are present at the outlet of the boiler system. Induced draft fans create a negative pressure or suction which removes all exhaust gases and flue gases after combustion from the furnace.

As they handle hot flue gases, they are vulnerable to erosion and corrosion even when used with particulate removal equipment (Electrostatic precipitator ESP)

To withstand the effects of corrosion and erosion, fans used as ID fans are usually modified radial, forward curved, backward inclined blade centrifugal fans.

Primary air (PA) fans

Primary air fans are usually high pressure fans, which are used to supply air for transportation of coal directly from the pulverizer to the furnace.

Primary fans usually have a cleaner operation as they handle relatively cleaner air. They provide a positive pressure upstream of coal pulverizer. Primary air fan upstream from the pulverizer, pushes coal and air mixture through pulverizer into the furnace.

Fans used as PA fans are high pressure like airfoil centrifugal fans or a multistage variable axial fans.

Gas recirculation fans

Gas recirculation fans in boilers are used to control steam temperature, furnace heat absorption and slagging of heating surfaces.

Gases from economizer outlet and pre-heater inlet are absorbed by gas recirculation fans and are discharged to either bottom of the furnace for steam temperature control or to any other location in the furnace.

The operating conditions of gas recirculation fans are very harsh due to heavy loads of dust and extreme temperature excursions.

Gas recirculation use straight or modified radials or forward curved backwardly inclined centrifugal fans.

Process fans in power plants are important as they provide the necessary air required for combustion and removal of exhaust gases. The main advantage of using industrial fans in power plants is for gas-recirculation and to maintain the required temperature in the furnace.