A Review paper on Erosion and Corrosion behavior of Coal combustion chamber |
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BibTeX: |
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@article{IJIRSTV1I7053, |
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Abstract: |
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Erosion and corrosion of bed coil is a major problem faced by the power plant industry today. The damage caused to the exposed surface of the tubular, due to these phenomena can be enormous. The failure of equipment during treatment can be very expensive both from the point of view of economic losses as well as personnel safety. In order to increase the steam parameters in combustion units, several new approaches have been proposed. New materials have been tested, but they seldom have been a sufficient solution. Metallic coatings sprayed on super heater tubes have been noted to reduce erosion and corrosion in selected cases. New plant designs have been tested. Corrosion of materials may represent a heavy burden for industry in general, especially for the petroleum industry where the oil and gas compositions are responsible for reducing the service life of component materials of equipment due to severe corrosion attack and, consequently, to considerable expenses related to the maintenance and replacement of parts in a processing unit. Corrosion is one of the main causes of reduced reliability in steam generating systems. It is estimated that problems due to boiler system corrosion cost industry billions of dollars per year. Many corrosion problems occur in the hottest areas of the boiler-the water wall, screen, and super heater tubes. Other common problem areas include dearators, feed water heaters, and economizers. Methods of corrosion control vary depending upon the type of corrosion encountered. The most common causes of corrosion are dissolved gases (primarily oxygen and carbon dioxide), under-deposit attack, low pH, and attack of areas weakened by mechanical stress, leading to stress and fatigue cracking. |
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Keywords: |
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Erosion, Corrosion, Atmospheric Fluidised Bed Combustion (AFBC) Boiler |
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