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转炉烟道冷却壁经常开裂 ,据分析 ,开裂的主要原因为 :水质、水处理系统及其运行过程中在锅炉系统的内部产生点蚀及局部结垢后 ,部位具有较高的热阻 ,锅炉管外壁温度不均匀 ;同时 ,冷却壁急冷急热现象频繁 ,容易在冷却壁的最薄弱处产生裂纹。处理方式为在锅炉系统中增设加药计量泵 ,连续定量加入除氧缓蚀剂及阻垢剂 ,避免锅炉管内结垢及产生点蚀 ,进而避免了锅炉管外壁温度不均匀现象的产生 ,从根本上解决了烟道冷却壁经常开裂的问题
Converter flue cooling stave often cracking, it is analyzed, the main reason for cracking: water quality, water treatment system and its operation in the boiler system generated pitting and local scaling, the site has a high thermal resistance, the boiler Tube outer wall temperature is not uniform; the same time, the rapid cooling of the wall rapid cooling phenomenon, easy to crack in the weakest of the cooling wall. The treatment method is to add a dosing metering pump in the boiler system to continuously add oxygen scavenger inhibitor and scale inhibitor continuously to avoid fouling and pitting corrosion in the boiler tube so as to avoid the occurrence of uneven temperature on the outer wall of the boiler tube. Fundamentally solve the chimney cracking often cracking problems