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2009, vol. 35, iss. 3-4, pp. 251-261
Low-temperature corrosion in water boiler systems
Institute Goša, Belgrade
Projekat Ministarstva nauke Republike Srbije, br. 19205: Istraživanje mogućnosti optimizacije rada i revitalizacije habajućih delova ventilacionog mlina termoelektrane Drmno-Kostolac

Keywords: water boiler systems; heavy fuel oil; deposit; low temperature corrosion; diagnostics
During the exploitation steel tubes were damaged in economizer of the water boiler system, which works in the regime with periodic shutdowns. The aim of this work was to determine the cause of steel-tubes damage on the flue gas side of the water-boiler system. Chemical analysis of heavy fuel oil, deposit and flue gases were employed, pH measurements of deposit water solution as well as qualitative optical microscopy. Additionally, the water-boiler working conditions were analyzed. Results have shown significant presence of Fe species in deposit and low pH values of deposit solution. Damages were probably caused by the low temperature corrosion. The assumption is that the damages were more intensive during the water boiler shutdowns periods.
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article language: Serbian
document type: Professional Paper
published in SCIndeks: 02/11/2010

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