燃煤锅炉暖风器的改进

Retrofit of the Steam Air Heater in Coal-fired Boiler

对燃煤锅炉原有盘管式暖风器结构特点及存在问题进行了分析,提出了新型套管式暖风器的设计思路,探讨了新型套管式暖风器设计制造过程中的几个具体问题。新型暖风器投用后可以有效地防止管内介质的泄漏,大大提高暖风器运行的可靠性,减少燃煤锅炉尾部受热面的低温腐蚀,减缓了锅炉空气预热器的堵灰速率,具有较高的推广价值。

Constructional character and problems in coiled steam air heater of coal-fired boilers is analyzed and a thinking of new type of tube in tube air heater is proposed. Some practical problems in design and production of the new type air heater are discussed. This new type air heater is more effective in preventing media leakage during operation, hence the higher reliability, less low temperature corrosion of the boiler down path, slower ash clog rate of air heater. It is worth of highly recommendation.