For regenerator ,s large hole distributional plate in large FCCU endures high temperature load,the amount of the thermal distortion of it is very large,so the stress of it ,s skirt root is too high.

• 由于催化裂化装置中再生器大孔分布板承受高温载荷作用,大孔分布板的热变形量很大,因此大孔分布板裙座根部的应力很大。