Sulfuric acid dew point Corrosion
Sulphuric acid dew point corrosion or cold end corrosion occurs due to the condensation of sulphuric acid and is commonly observed in components which are exposed to product of combustion . ie Boiler or an engine. sulphuric is present in heavy oil and during combustion, Sulphur oxide are generated . a small portion of which become SO3 , as the exhaust gas temperature reaches the dew point or lower , vapor-phase sulfuric acid form . f the sulphuric acid vapor contacts the lower – temperature metal surface it may condensate as liquid sulphuric acid and corrode the metal
Source – SA Hasan Linkedin