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我厂的SHL10-25/400-A Ⅱ型锅炉于1989年建成投产,在运行中与其配套的水幕式除尘器出口风管(由钢板卷制)经常被腐蚀击穿,每3个月需修补;因除尘效果不好,烟气夹带水分,使引风机叶轮积灰失去平衡造成强烈振动,轴承损坏,严重时振裂轴承底座,此外,叶轮和风量调节板等部件,每年更换,增加了维修费用和维修工人的劳动强度,而问题仍旧得不到彻底解决。通过分析,认为主要原因是高温烟气中的硫成分和因除尘器除尘效果不好带出水灰冲刷腐蚀。人为的原因是,该设备原夹套设计是用水泥预浇。因施工有一定难度,承建单位未按图
The boiler SHL10-25 / 400-A Ⅱ of our factory was put into operation in 1989. During the operation, the air curtains (made of steel sheets) for exporting the water curtain precipitator are often corroded and broken down every 3 months Repair; dust removal effect is not good, the entrained water flue gas, induced draft fan fouling imbalance caused by strong vibration, bearing damage, severe vibration bearing base, in addition, the impeller and air volume adjustment plate and other components, replaced each year, an increase Maintenance costs and the labor intensity of maintenance workers, the problem still can not be completely solved. Through analysis, it is considered that the main reason is the sulfur content in high-temperature flue gas and the dust erosive corrosion caused by the dust removal effect of the dust collector. Artificial reason is that the original jacket design of the device is precast with cement. Due to the construction of a certain degree of difficulty, the contractor failed to press the map