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Corrosion behavior of carbon steel in amine‐based CO 2 capture system: effect of sodium sulfate and sodium sulfite contaminants
Author(s) -
Emori W.,
Jiang S. L.,
Duan D. L.,
Ekerenam O. O.,
Zheng Y. G.,
Okafor P. C.,
Qiao Y. X.
Publication year - 2017
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201609245
Subject(s) - sodium sulfite , corrosion , sodium sulfate , sulfite , sulfate , sodium , chemistry , electrochemistry , inorganic chemistry , carbon steel , amine gas treating , materials science , electrode , organic chemistry
The effect of sodium sulfate and sodium sulfite on the corrosion behavior of carbon steel in CO 2 capture process with methyldiethanolamine (MDEA) solution has been studied under an absorber temperature condition (50 °C). The corrosion behavior was evaluated using electrochemical methods, weight loss measurements, and surface analytical techniques. Sodium sulfate increased the system corrosiveness and the rate of corrosion increased with concentration while sodium sulfite reduced the corrosion rate and the inhibition performance improved with concentration. Weight loss measurements showed an increase in corrosion rate with time for sodium sulfate while the inhibition performance for sodium sulfite was considerably low for the tested concentration.