针对辛烯醛气相加氢反应器换热管的失稳问题，通过宏观检查、材料检测及有限元分析相结合的方法，揭示了其失稳的根本原因。基于此，研究通过多次结构优化迭代，重点改进了换热管的支撑结构与约束形式，提出了一种经济且高效的解决方案，并通过ANSYS软件验证了该优化方案能有效抑制失稳现象，使换热管的应力水平与变形量下降、稳定性提高，为解决同类石油化工设备的失稳问题提供了重要参考价值。
关键词: 辛烯醛气相加氢反应器 / 换热管失稳 / 原因分析 / 解决方案 / 结构优化
Abstract:
Addressing instability issues in heat exchange tubes of octenal gas-phase hydrogenation reactors, this study combines macroscopic inspection, material testing, and finite element analysis to identify the root causes of instability. Based on these findings, the study conducts multiple structural optimisation iterations, focusing on enhancing the support structure and restraint configuration of the heat exchange tubes. An economical and efficient solution was proposed, validated through ANSYS software, to effectively suppress instability. This reduces stress levels and deformation while improving stability in the heat exchange tubes, providing valuable reference for resolving instability issues in similar petrochemical plants.
Keywords: octenal gas-phase hydrogenation reactor / instability of heat exchanger tube / cause analysis / solution / structural optimisation