TY - GEN
T1 - Neutralizing amines effect on corrosion process of carbon steel exposed in acid sour media
AU - Quej-Aké, L.
AU - Cabrera-Sierra, R.
AU - Arce-Estrada, E.
AU - Marín-Cruz, J.
PY - 2008
Y1 - 2008
N2 - To control the corrosion process in primary distillation towers by the influence of acid sour media (HCl+H2S), neutralizing compounds are widely used in oilfield. Amines typically used are Monoethanol Amine (MEA), Ethylenediamine (E), Ethylenediamine at 60% (E60) and 2-ethylhexillamine (2-EH), being the first one the most used. In this work Electrochemical Impedance Spectroscopy (EIS) technique is used to study the amines concentration effect on carbon steel corrosion process in sour solution (0.5 M HCl + 500 ppm of H 2S at 40°C, pH 2). The quantitative analysis of EIS diagrams showed an active behavior of the interface without amine. Furthermore, metal activity increases in presence of MEA and E. However, at different dosages (5, 15 and 30 ppm) both E60 and 2-EH amines, exhibit a positive effect to control corrosion. Finally, EIS analysis is supported by scanning electron microscopy (SEM) characterization.
AB - To control the corrosion process in primary distillation towers by the influence of acid sour media (HCl+H2S), neutralizing compounds are widely used in oilfield. Amines typically used are Monoethanol Amine (MEA), Ethylenediamine (E), Ethylenediamine at 60% (E60) and 2-ethylhexillamine (2-EH), being the first one the most used. In this work Electrochemical Impedance Spectroscopy (EIS) technique is used to study the amines concentration effect on carbon steel corrosion process in sour solution (0.5 M HCl + 500 ppm of H 2S at 40°C, pH 2). The quantitative analysis of EIS diagrams showed an active behavior of the interface without amine. Furthermore, metal activity increases in presence of MEA and E. However, at different dosages (5, 15 and 30 ppm) both E60 and 2-EH amines, exhibit a positive effect to control corrosion. Finally, EIS analysis is supported by scanning electron microscopy (SEM) characterization.
UR - http://www.scopus.com/inward/record.url?scp=70449629560&partnerID=8YFLogxK
U2 - 10.1149/1.3046634
DO - 10.1149/1.3046634
M3 - Contribución a la conferencia
AN - SCOPUS:70449629560
SN - 9781615672882
T3 - ECS Transactions
SP - 203
EP - 213
BT - ECS Transactions - MES 23
PB - Electrochemical Society Inc.
T2 - MES 23: Electrochemistry, Nanotechnology, and Biomaterials - 23rd MES Meeting
Y2 - 1 June 2008 through 6 June 2008
ER -