Air Impingement Drying
Air impingement drying involves blowing hot air (at 300 ºC) in gas burners at high velocity against the wet paper sheet it consumes less steam but slightly higher electricity. The technique is applicable to coating drying mostly however it is also gaining acceptance for general paper drying replacing conventional steam cylinders. Given that this measure involves a tradeoff between thermal and electrical energy use, and the extent of this tradeoff may vary by installation, it is important that net energy savings be verified on a facility by facility basis.