Safety assessment of refined hydrogenation reactor with plane embedded defects

doi:10.16265/j.cnki.issn1003-3033.2018.11.014

Abstract

Abstract: The finite element simulation method and general failure assessment criterion were applied to evaluate the pressure vessels containing planar defects. A burial plane defect was discovered in a certain kerosene hydrofining reactor during the periodic inspection process. A steady state thermal analysis and a mechanical stress analysis of the main structure of the reactor were made based on ANSYS. Primary stress and secondary stress with their components under design condition and hydraulic test condition were determined for the routine evaluation, the assessment was carried out following the procedures for pressure vessels containing defects. Result shows that the stress state of the equipment, especially the local stress level of the defective area can be obtain more accurately by using the stress analysis method given in this paper, and that the evaluation point formed by the fracture ratio and the ratio of the load is located in the safety area of general safety assessment chart, which means that the defect is a safe one.

Key words: reactor, finite element method, static thermal analysis, stress analysis, embedded defect, safety assessment

CLC Number:

X937

DU Liang, BIE Kai, ZHAO Yajie, ZHANG Guojin, YAN He. Safety assessment of refined hydrogenation reactor with plane embedded defects[J]. China Safety Science Journal, 2018, 28(11): 86-91.

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