Drum and air induction interlock
Thread Content
In the interlock between the drum fan and the induced draft fan, the induced draft fan should be stopped 12 seconds after the drum fan stops, while the drum fan should stop immediately when the induced draft fan stops. What is the reason for this setting?
For safety reasons, it is necessary to prevent the formation of explosive mixtures.
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To prevent one-way heating in the preheater, the blower should be stopped, as well as the induced draft fan
It is mainly to maintain negative pressure in the furnace chamber and prevent the accumulation of flammable gases! The blower has stopped; the exhaust fan delays by 12 seconds before pumping out the combustible gases ； If the exhaust fan stops, the blower must stop immediately; otherwise, the furnace will experience positive pressure, which is very dangerous!
For safety reasons, a negative pressure should be maintained. Is this the top burner used for hydrogen production?