氯化苯精馏再沸器焊接工艺改进及维护

Improvements and Maintenance of the Welding Technology of the Chloro-Benzene Fractionation Re-Boilers

对氯化苯精馏再沸器管板和列管连接接头的焊接工艺进行改进,采用先胀后焊的焊接工艺取得了良好使用效果,并提出了日常使用及维护方法。

Some improvements were made of the welding technology of the joints of the tube-sheets and pipes of the chloro-benzene fractionation re-boilers, a good result was obtained using the technology of expanding previous to welding, and some routine applications and maintenances were proposed.