加氢反应器内部支撑结构设计及应力计算

摘要

介绍了加氢反应器内件液体分配盘、填料格栅及催化剂的支撑结构形式.液体分配盘整体重量及支撑结构受力均较小,选用支持圈焊接在堆焊过渡层的结构形式,并采用工程简化计算方法进行应力校核.填料格栅和催化剂支撑重量及支撑结构上表面转角处拉应力均很大,支撑结构材料易产生氢脆,采用堆焊凸台作为填料格栅及催化剂支撑结构形式,并用有限元方法进行应力分析和校核.对比了常规计算方法和有限元分析法的优缺点,可为加氢反应器内件支撑方式和计算方法选择提供参考.%The support structure of liquid distributor plate,filler grille and catalyst in the hydrogenation reactor are introduced.The overall weight of the liquid distribution plate and the force of supporting structure are all small.The structure of support ring welding on the surfacing transition layer is selected and the simplified calculation method is used to check the stress.The weight of filler grille and catalyst as well as the tensile stress at the top corner of support structure are very large,support structural materials prone to hydrogen embrittlement,the surfacing boss is used as the filler grille and catalyst support structure,and the finite element method is used for stress analysis and verification.The advantages and disadvantages of the conventional calculation method and the finite element analysis method are compared;it provides reference for the support mode and calculation method of hydrogenation reactor internals.