Numerical simulation and factor analysis of petrochemical pipe erosion-corrosion failure

Based on the behavior of carbon steel outlet tube in REAC pipes of Zhenhai Refining & Chemical Company, the mathematical model of fluid-solid interaction was established according to the mechanism of erosion-corrosion damage. The interaction between corrosion products protecting film and multiph...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-05, Vol.129 (1), p.12033-12040
Main Authors: XU, G F, OU, G F, Chen, T, Li, P X, JIN, H Z
Format: Article
Language:English
Subjects:
Carbon steels
Computer simulation
Corrosion
Corrosion mechanisms
Corrosion products
Erosion mechanisms
Erosion-corrosion
Factor analysis
Failure analysis
Finite element method
Fluid-solid interactions
Gaging
Life prediction
Mathematical models
Multiphase flow
Optimization
Pipe
Reliability analysis
Risk assessment
Shearing
Simulation
Stress concentration
Stresses
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Summary:Based on the behavior of carbon steel outlet tube in REAC pipes of Zhenhai Refining & Chemical Company, the mathematical model of fluid-solid interaction was established according to the mechanism of erosion-corrosion damage. The interaction between corrosion products protecting film and multiphase liquid was analyzed by numerical simulation method. The distribution of shearing stress on the inwall of elbow bend, and the distribution of principal displacement, stress and strain of corrosion products protecting film were disclosed, while the erosion-corrosion failure processes was studied. The simulation result coincides with that of the positioned thickness gauging which validated the reliability and feasibility of the finite element analysis software simulation method. The obtained results can be used in the erosion-corrosion failure analysis, structural optimization, in-service testing positioning, life prediction, risk assessment, safety and other security projects for multiphase flow pipeline.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/129/1/012033