我厂催化裂化装置,自1971年元月投产至1975年10月历经十四个周期,再生器分布板严重变形,并由密相段人孔向装卸孔方向倾斜。人孔两侧鼓起两个大包,最大凸起170毫米,分布板中心孔偏斜高差44毫米,鼓包部位的开孔变为椭圆状。溢流管膨胀节护裙靠人孔侧曾被迫二次割短170毫米。变形后的分布板已不能承担布气均匀和使床层流化稳定的作用。再生器径向温差高达30℃,轴向温差达20℃。由于流化质量变 Our catalytic cracking unit, put into operation from January 1971 to January 1975 after fourteen cycles, the regenerator distribution plate serious deformation, and by the dense section of the manhole to the direction of the loading and unloading hole tilt. Manhole two bulge on both sides of the bulge, the largest raised 170 mm, distribution center hole deviation height 44 mm, bulging part of the opening into an oval. Overflow tube expansion joint skirt on the manhole side was forced to cut a short 170 mm twice. After the deformation of the distribution plate has been unable to bear the cloth gas uniform and fluidized bed stability. Radial temperature regenerator up to 30 ℃, the axial temperature difference of 20 ℃. Due to fluidized mass change