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对小型蒸汽锅炉省煤器内的介质沸腾问题进行了探讨，详细分析了介质沸腾的现象、原因，提出了改进和防止措施，并且应用于实践，收到了明显的经济效益和社会效益。
The problem of medium boiling in the economizer of small steam boiler was discussed. The phenomenon of medium boiling, the reason of the boiling, and the improvement and precautionary measures were put forward in detail, and applied to practice, obvious economic and social benefits were received.