As early as the middle of the 60, the Soviet Union had studied the KO of the fin, and the economizer of several furnaces had been reformed, and because of the structural characteristics of the fin economizer, not only had the total song M of the coal saving been reduced by 3%, but also the raw materials had been saved, and the wear problem of the economizer had been solved. In Japan, there are also a group of 300-700MW units of the boiler using spiral fin tube economizer. The purpose of using finned tube Economizer in Japan is mainly to reduce the shape of boiler by using its structural characteristics, save raw materials and reduce costs.
American Fu Ster Huiller Company also with my Shandong boiler factory joint design, in addition to Shandong boiler Factory manufacturing DG220/9.8-5 plastic fluidized bed boiler, in the separator after the external flue also involved in the use of spiral fin tube economizer to reduce wear. Since the late 80, the industrial test of spiral finned tube economizer has been carried out in China, and the development course of the whole machine introduction, experimental research and design and development has gone through more than 10 years. The application of spiral finned tube in coal saving of domestic power plant is documented, which indicates that the economizer of spiral fin tube bundle has been from it. Pure introduction began to move towards the design and development stage.