Also involved is how to operate and maintain the preheater appropriately.
提出了正确使用、维护预热器的方法。
Heat recovery system with revolving air preheater can keep the heat efficiency above 86%.
采用回转式空气预热器的热回收系统，可以使加热炉热效率保持在86%以上。
Heat recovery system with revolving air preheater can keep the heat efficiency above 86%.
采用回转式空气预热器的热回收系统，可以使加热炉热效率保持在86%以上。
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