论文部分内容阅读
我厂催化裂化装置再生烟气能量回收系统中,部分烟气和催化剂粉尘由多管式三旋底部进入四旋(未加耐磨衬里)分离。由于烟气流速很大,催化剂粉尘对四旋的锥形筒体冲刷严重,于一九八四年将锥筒焊缝磨穿,孔径约40毫米,影响了生产。未加耐磨衬里的四旋从投用到被磨穿仅运行了四个月。为解决磨蚀问题,八四年底决定改用带有耐磨衬里的四旋。因其体积小,衬里施工困难,设计采用无黾甲网单层耐磨衬里结构,即在原四旋的尺寸基础上合理地加大外壳的几何尺寸。并将外壳分成上中、下、三部分进行制作,分段施工耐磨层,然后组焊成整
In our FCCU regenerative flue gas energy recovery system, part of the flue gas and catalyst dust is separated from the four-spin (without wear-resistant lining) at the bottom of the multi-tube three-screw. Due to the high flue gas velocity, the catalyst dust scouring the quadrupole conical cylinder was worn heavily. In 1984, the conical cylinder weld was worn through with a hole diameter of about 40 mm, which affected the production. The non-wear-resistant lining of the four spin from wear to wear worn only for four months. In order to solve the problem of abrasion, the end of 1984 decided to switch to a four-spin with a wear-resistant lining. Because of its small size, lining construction difficulties, the design uses a single-layer wear-resistant mesh liner structure, that is, based on the original size of the four-spin reasonable to increase the shell geometry. And the shell is divided into the upper, lower, three parts for production, construction of wear-resistant layer, and then welded into the whole