Forced Draft Cooler

The Forced Draft Cooler is basically gas to air heat exchanger. These are especially suitable for Heat and mass transfer where water cannot be used economically as cooling media. This is particularly suitable for Sponge Iron Kilns.

Here the flue gases are made to pass over the tubes and fresh atmospheric air is passed through the tubes by FD Fans. The heat exchange takes place between the cooling media (Air) and the gas via convection. The flow of hot gases and the cooling media are perpendicular to each other to have maximum heat exchange efficiency.

The FD Cooler is made of multiple bank tube bundles stalked one over the other. The Hot flue gases enter the system at the top and after loosing its heat to the cooling media (Air) in the process, enter the dust collector (ESP or Bag Filters).

The dust particles in the flue gases are collected in the hopper mounted under the FD cooler and are discharged via Rotary Air Lock. The temperature of the Flue Gases coming out of the FD Cooler are monitored and controlled by injecting a small qty of bleeding air after the Cooler.
We have supplied these FD Coolers for several 50TPD and 100TPD sponge iron Plants.