Abstract

Acid gas sweetening plants use various amine solvents (namely primary, secondary and tertiary) to selectively remove impurities such as Hydrogen Sulfide (H2S) and or Carbon Dioxide (CO2) from natural gas.

Amine stress corrosion cracking(ASCC), in addition to wet H2S damage mechanisms, is a known cracking degradation in the gas sweetening plants. Often, its detectability is questionable even with advance non-destructive examination (NDE) techniques like wet fluorescent magnetic particle testing (WFMPT) and Phased array. The paper describes cracking phenomenon in lean Diethanolamine (DEA) exchangers made of carbon steel with post weld heat treatment and challenges to detection.

Keywords:
permission, hydro test, upstream oil & gas, wfmpt, corrosion management, corrosion inhibition, stress corrosion, exchanger shell, publication division, texas 77084
Subjects:
Production Chemistry, Metallurgy and Biology, Corrosion inhibition and management (including H2S and CO2)
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2015. NACE International
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