The coke towers are working under high temperature and coke in and out with hot and cold distress,and local severe distortion of the towers or dehiscence of welded seam appears frequently.

• 焦炭塔长期在高温及充焦、除焦的冷热疲劳作用下运行,常出现塔体局部严重变形和母材焊缝开裂问题。