Process Equipment Dynamic Optimization Methods

Through the dynamic optimization can control the vibrated level and noise effectively, to make the structure have good dynamic characteristics. Over the years, the designers at home and abroad take high attention on the dynamic optimization technique at all times.In actual motion, the process equipments bear in addition to static loads, they still bear the function of the pressure fluctuation etc. dynamic loads. Aiming at the process equipments are mostly designed according to the static design standard of the normalregulations, in addition to the tower equipments and tubular heat exchanger Currently. But the destruction of the alternating stresses that brought by alternating loads can't make a reasonable evaluation and prevention. So it can't guarantee that the equipments have good dynamic characteristics. This topic offers the dynamic optimization method based on the structural dynamic modification to dynamic optimize the process equipments.Firstly, analyze the loads of the process equipments, and emphatically analyze the pressure fluctuation that is the important dynamic load in the process equipments; discuss the dynamic model of the process equipments, and introduce the finite element modeling method by an example.Secondly, introduce the dynamic analysis of the process equipments, and emphatically introduce the eigenvalue, eigenvector and response analysis.Thirdly, discuss the base fundament of the structural dynamic modification. Expatiate the selection principle of the dynamic optimization three factors, which include the optimization objectives, the design variables and the constraint functions. And introduce the dynamic sensitivity analysis and the reanalysis of the modified structure of the process equipments.Finally, take the multi-barrelled tretyi cyclone used for the heavy oil catalytic cracking as an example, using the dynamic optimization method based on the structural dynamic modification to dynamic optimize, and to verify the practicability and the feasibility of the method.The research of this topic provides a dynamic optimization method that is safe, lowcost, low risk and acceptable. It enriches and develops the design technique of the process equipments. It has the profound meaning to improve the technique level of the process industry. Through dynamic optimization can not only improve the quality and reduce troubles, but also lower the voice and abate the environment pollution. It has a good social and economic performance.This topic is supported by Natural Science Foundation of Shandong Province (The Research of Dynamic Optimization Theories and Application of the Process Equipments NO: Y2004D12 ).