Furnace air preheater
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A failure in the fan associated with the air preheater in a cylindrical furnace requires shutdown for repair; as a result, the air flow rate through the air preheater decreases. Could this lead to damage to the air preheater in the convection section? Convection section temperature: 550℃
Probably not. Does your facility’s air preheater use perturbator heating tubes? Besides, if a problem is found with the air preheater, then just direct the flue gas to be discharged directly. What temperature is required for shooting during normal operation? Theoretically, it can be damaged, as there is no cooling source; in our facility, when the cold air supply is turned off, the flue dampers will automatically activate to switch to direct exhaust mode.
Is the air preheater top-mounted or bottom-mounted? The flue gas at the bottom is discharged directly, without passing through an air preheater. If it is installed at the top, it is recommended to reduce the processing volume and keep the flue gas temperature below 450 degrees