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Before the collected NCGs flow through the fan, they usually flow through a cooler and mist eliminator. The purpose of the NCG condenser is to remove water and condensable organics from the NCGs. This reduces the volume of gas going through the fan and onto the incineration point. This leads to more consistent burning. Removing water from the gas stream also makes it less corrosive to downstream equipment. The condenser is typically a shell and tube heat exchanger with the NCGs on the tube side. As the gases inside the tubes cool, water vapor in the NCGs condenses out as liquid water. That condensate is sent to a foul condensate collection tank.