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布置在锅炉尾部对流烟道中的省煤器、空预器和暖风器是现代锅炉的主要部件。文章介绍了自六十年代以来，相继研制出肋片管、螺纹管和热管空气预热器。采用螺旋肋片管省煤器、热管空预器对锅炉尾部进行综合技术改造。可基本解决锅炉尾部存在的磨损、爆漏与漏风、腐蚀、堵灰问题，并适当降低烟温度，提高了锅炉效率，同时减少了维修工作量。
Economizers, air preheaters and air heaters located in the convection flume at the rear of the boiler are the main components of modern boilers. This article introduces that since the 1960s, we have successively developed fin tube, screw tube and heat pipe air preheater. The use of spiral finned tube economizer, heat pipe air preheater on the rear of the boiler for a comprehensive technological transformation. Can basically solve the existence of the rear of the boiler wear and tear, leakage and leakage, corrosion, blocking ash problems, and appropriately reduce the temperature of the smoke to improve the boiler efficiency, while reducing the maintenance workload.