Protection against Fire and Explosion in Spray Dryers

Optimising product quality and process control for powdered dairy products

“…Deposits of milk powder in spray dryers may undergo exothermic reactions between the milk constituents and this may lead to self-ignition and smouldering. Smouldering deposits may, if the occasion arises, fall down and initiate an explosion in the lower part of the drying chamber (cone) where the dust concentration often considerably exceeds the lower explosion limit (Skov, 1986). Once the milk powder is smouldering it produces a significant amount of carbon monoxide (CO).…”