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空气预热器的低温烟气腐蚀是影响锅炉经济运行的重要因素之一,也工业锅炉中极容易发生堵塞的环节。特别是20T/h锅炉上,大多数是使用钢管式空气预热器,钢管式空气预热器的下部腐蚀严重,容易发生堵塞现象,据20年的实践表明,该预热器运行一年左右,堵塞的管子多达70％,堵塞后的检修工作非常困难,在人工进行疏通时,劳动强度大,对人体皮肤危害较大。堵塞后严重影响锅炉配风,影响锅炉的经济运行。为了改善空气预热的工作状况,提高空气预热器的抗腐蚀能力,采用新技术对20T/h锅炉尾部受热面系统进行了技术改造,采用7耐低温腐蚀的GG17硼硅玻璃管制造空气预热器,该预热器投入运行后,经实际运行观察,硼硅玻璃空气预热器
Air preheater low temperature flue gas corrosion is one of the important factors that affect the economic operation of the boiler, but also extremely prone to blockage in industrial boilers. Especially in the 20T / h boiler, most of them use the steel tube type air preheater. The lower part of the steel tube type air preheater is seriously corroded and easily clogged. According to 20 years of practice, the preheater has been operating for about a year , Up to 70% blocked pipes, maintenance work after the block is very difficult to clear in the labor, the labor-intensive, greater harm to human skin. Seriously affect the boiler after the blockage with the wind, affecting the economic operation of the boiler. In order to improve the working condition of air preheating and improve the anti-corrosion ability of air preheater, a new technology was adopted to revamp the heating system of the rear of the 20T / h boiler. The air pre-GG17 borosilicate glass tube with 7 low temperature corrosion resistance Heater, the preheater into operation, the actual operation of observation, borosilicate glass air preheater