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锅炉的省煤器有沸腾和非沸腾两种形式,从设计上均有省煤器再循环系统,目的是在锅炉起停时,保证省煤器的安全运行,避免省煤器中的水循环不良,造成省煤器过热导致发生省煤器损坏事故。 根据实际运行管理的情况,有不少锅炉使用单位对省煤器再循环系统重视不够,司炉人员在起停炉时对再循环阀门不进行操作,致使省煤器产生水冲击或者过烧;有的甚至操作再循环阀门时竟然打不开;还有的在实际运行中关闭不严,使锅炉给水一部分直接上到汽包,长期这样运行也将对汽包产生危害。
Boiler economizer boiling and non-boiling two forms, both from the design of economizer recycling system, the purpose is to start and stop the boiler to ensure the safe operation of the economizer to avoid poor economizer in the water cycle , Resulting in economizer overheating led to the occurrence of economizer damage accident. According to the actual operation and management of the situation, there are many boiler units on the economizer recycling system attention is not enough, the stomatal staff in the start-stop furnace on the recirculation valve is not operated, resulting in economizer water impact or over burning; there Even the operation of the recirculation valve can not open even when there are still closed in the actual operation of the lax, so that part of the boiler feed directly to the drum, such a long run will also be harmful to the drum.