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所有的矿物燃料,可能除了天燃气以外,都含有促使锅炉受火一侧元件产生腐蚀的成分。这些“不良因素”是硫、钠及钒的化合物。但在燃用城市废料的锅炉中,氯则是不容忽视的因素。锅炉受火侧腐蚀主要发生在以下三种温度工况中:1.低于300°F(149℃),当硫酸冷凝时,产生露点腐蚀。2.在500-750°F(260-399℃)之间,由于焦硫酸钠及焦硫酸钾的形成,锅炉水冷壁管受火部分易产生腐蚀。在废料锅炉中,由于氯化锌、铅、铁及钠的混合物
All fossil fuels, other than natural gas, may contain components that cause corrosion on the fire-affected side of the boiler. These “bad elements” are sulfur, sodium and vanadium compounds. However, in municipal solid waste boilers, chlorine is a factor that can not be ignored. Boiler fire side corrosion mainly occurs in the following three temperature conditions: 1. Below 300 ° F (149 ° C), dew point corrosion occurs when sulfuric acid condenses. 2. At 500-750 ° F (260-399 ° C), due to the formation of sodium pyrosulfate and potassium pyrosulfate, the boiler waterwall tube is susceptible to corrosion by the fire. In waste boilers, due to the mixture of zinc chloride, lead, iron and sodium