Structural Optimum Design And Reliability Analysis Of Hydrogenation Reactor Based On ANSYS

The paper carries on thermal stress analysis and assessment and the optimum design of the skirt supporting zone of a hydrogenation reactor, by means of ANSYS, large-scale three-dimensional finite element analysis software. Furthermore, the paper gives the reliability analysis of the skirt supporting zone of hydrogenation reactor on the basis of the optimum design.First of all, thermal stress analysis and assessment of the hydrogenation reactor is carried out. Because both mechanical stress and thermal stress exist in the skirt supporting zone of the hydrogenation reactor, indirect method is used first to carry out the temperature field calculation and then the mechanical and thermal stress calculation, in order to get the maximum value of total stress as a restraint condition of the optimum design.Secondly, structural optimization of the skirt supporting zone of the hydrogenation reactor is carried out by means of ANSYS, through this course, the technical index of product design is improved and the target of decreasing the area of the structure is satisfied. The results indicated that the area of the h-type forging piece has been reduced by 16% after the optimization and it is obvious that the optimization is remarkable.Finally, the reliability analysis of the optimized skirt supporting zone of hydrogenation reactor is carried out on the basis of the optimum design. The average probability of the limiting state equation Z less than zero is 4.04983% on condition that the degree of confidence is 95%, which shows that the fiduciary level of the optimized hydrogenation reactor is 95.95%, the dependability of the optimized structure and the feasibility of the optimum design is verified.