Corrosion of Alloys in a Simulated Wood-Waste Fluidizing Bed Power Boiler Environment

Rapid corrosion of Type 310H (UNS S31009) stainless steel fluidizing bed nozzles was observed shortly after start-up of a fluidizing bed power boiler designed to combust a mixture of salt-laden, wood-waste (hogged-fuel), and sludge. The primary cause of corrosion was previously identified as active oxidation, a high-temperature chloridation reaction occurring under thick, chloride-rich ash deposit. Replacing the nozzle metallurgy with a more …