Application Notes:
 

cold-end corrosion


is the corrosion due to the acid-forming condensation of sulfur trioxide (SO3) on cool surfaces of a boiler, especially the cooler parts of the chimney and the air heater; also called low-temperature corrosion. It can be prevented or minimized by using resistant alloys, by operating at low excess air levels (which reduces SO3 production), or by operating at higher stack temperatures.

 

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