Abstract
Hydrogen permeation behavior of pipeline steel under different sour condensate film condition was investigated by in-situ testing. The effects of H2S corrosion product scales and the temperature of wet gas containing a high content of hydrogen sulfide on the hydrogen permeation of pipeline steel were studied by electrochemical methods. In wet gas conditions with a high content of hydrogen sulfide, ambient pressure corrosion simulation experiments were conducted in Devanathan-Stachurski cell tests to analyze the effects of different corrosion product scales and temperatures on hydrogen permeation. The corrosion products were studied by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the current density related to hydrogen permeation decreased and corrosion product scales became more protective with time. Besides, the current density related to hydrogen permeation increased as the temperature of wet gas increased.
