压力容器2017，Vol.34Issue(6)：38-46,9.DOI:10.3969/j.issn.1001-4837.2017.06.007
催化裂化装置三旋中心筒多开孔接管的热应力失效仿真及其对策
Thermal Stress Failure Simulation and Its Countermeasure of Central Cylinder with Multi-opening Nozzles of FCC Unit in High Temperature
王和慧 1冯亚娟 1付春辉2
作者信息
- 1. 华东理工大学 承压系统与安全教育部重点实验室,上海 200237
- 2. 中石化 上海高桥分公司,上海 201208
- 折叠
摘要
Abstract
Several cracking leakage failures occurred near the reinforcement circle of the central cylinder with multi-opening nozzles of FCC(fluid catalytic cracking) unit.The 3-D FE model reflecting its actual thermal and mechanical conditions is established.The temperature field,thermal deformation and stress are analyzed sequentially by using ANSYS.The dead air gap is formed between the reinforcement circle and shell because they cannot fit closely.The dead air gap is similar to thermal insulation blanket and it has significant impact on the local temperature distribution and thermal stress concentration.The thermal stress analysis and the strength assessment of the structures is made when they are under the combined working conditions.The drawbacks of the previous design and the improper thermal compensation are found,the improvement design is proposed and the good effects are obtained.The present approach provides reference for the strength and thermal compensation design of vessels with multi-opening nozzles in high temperature.关键词
催化裂化装置/三旋中心筒/多开孔接管/高温完整性/有限元分析Key words
FCC(fluid catalytic cracking) unit/three-spin shell/multi-opening nozzles/high temperature integrity/finite element(FE) analysis分类
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王和慧,冯亚娟,付春辉..催化裂化装置三旋中心筒多开孔接管的热应力失效仿真及其对策[J].压力容器,2017,34(6):38-46,9.
