轻烃重沸器返塔管道振动分析及改进

Vibration Analysis and Optimization of Return Pipeline of Light Hydrocarbon Reboiler

采用流固耦合动力学数值仿真和气液两相流理论分析轻烃回收重沸器返塔管道振动机理,发现垂直管段中的段塞流是引起管道振动的主要原因。通过对比分析,结合现场实际情况,提出防止管道振动改进方案,用两相流—管道耦合分析软件计算管道振动响应,证明改进方案有效。

This paper analyzes the vibration mechanism of the light hydrocarbon reboiler return pipeline through numerical simulation of fluid-solid coupled dynamics and gas-liquid two-phase flow theory,and have found out that slug flow of the vertical pipe section is the main cause of pipeline vibration.By combination of comparative analysis and actual situation on site,optimization method to prevent pipeline vibration is proposed,and the relative vibration response of the pipeline is calculated by using two-phase flow-pipeline coupling analysis software,and it is proved that the optimization method is effective.