某气田复合板压力容器腐蚀原因分析

doi:10.3969/j.issn.1006-8805.2024.03.007

Petro-chemical Equipment Technology ›› 2024, Vol. 45 ›› Issue (3): 31-35.doi: 10.3969/j.issn.1006-8805.2024.03.007

• CORRODION AND PROTECTION • Previous Articles

Analysis on Corrosion Causes of Composite Plate Pressure Vessels in a Gas FieldRevamp of Compressor & Pump Equipment Transmission Mode Based on Safety Requirements

Wang Jian

Zhonghai Petroleum Technology Inspection & Testing Co., Ltd., Tianjin, 300450

Received:2024-03-11 Accepted:2024-04-30 Online:2024-05-15 Published:2024-07-12

Abstract

Abstract: In order to determine the corrosion reasons of the composite plate (Q345R+316L) pressure vessel and formulate countermeasures, macro-morphological analysis and physical and chemical inspectionwere carried out for the corroded parts of the composite plate. The corrosion resistance and passivation ability of the composite plate laminated stainless steel in chloride environment were verified by cyclic polarization method and constant-potential method. The results indicate that the composite plate has obvious tendency to pitting in chloride environment, and cannot be re-passivated. The composite plate cannot meet the service conditions under current environment and it is necessary to take some measures to control the occurrence of chloride ion corrosion in pressure vessels.

Key words: pressure vessel, composite board, 316L, pitting corrosion

Wang Jian. Analysis on Corrosion Causes of Composite Plate Pressure Vessels in a Gas FieldRevamp of Compressor & Pump Equipment Transmission Mode Based on Safety Requirements[J].Petro-chemical Equipment Technology, 2024, 45(3): 31-35.

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Analysis on Corrosion Causes of Composite Plate Pressure Vessels in a Gas FieldRevamp of Compressor & Pump Equipment Transmission Mode Based on Safety Requirements

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