Tube Failures in Pulverised Coal Fired Boilers: An Investigation

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The book delves into the critical issue of high-temperature corrosion in coal-fired thermal power plants, focusing on water wall and super-heater corrosion at specific temperature ranges. It highlights the detrimental effects of prolonged exposure on boiler tubes, including loss of load-bearing capacity and reduced wall thickness due to corrosion. A detailed investigation of failed water tubes from a fluidized bed combustion boiler reveals that corrosion, primarily involving Fe2O3, is the main failure cause, alongside factors like overheating and erosion.