This study evaluated the corrosion performance of carbon steel (CS) and 304 stainless steel (304 SS) under high temperature and pressure (inside an autoclave) in a CO2-saturated solution of activated methyldiethanolamine (aMDEA). The aim was to determine the effect of temperature, presence of chloride ions, degradation of the aMDEA and amount of dissolved oxygen on the corrosion resistance of these materials. The results indicated that raising the temperature between 50 and 120°C led to a higher corrosion rate of both CS and 304 SS. However, the corrosion rate of 304 SS decreased and remained stable at higher temperatures as the corrosion reaction became mass-controlled. Oxygen loading results in the passivation of both CS and 304 SS. The amine degradation products were found to accelerate the corrosion rate of CS at 50°C due to a chelation effect of iron ions, and also increase the corrosion rate of 304 SS at 120°C by causing the passive film rupture. The SCC test on U-shaped 304 SS samples showed transversal microcracks with a depth of more than 25 µm after 2 months of immersion in an autoclave containing CO2-saturated aMDEA at 120°C, which confirmed the SCC risk of 304 SS.
PanahiHEslamiAGolozarMA. Corrosion and stress corrosion cracking initiation of grade 304 and 316 stainless steels in activated methyl diethanol amine (aMDEA) solution. J Nat Gas Sci Eng2018; 55: 106–112.
2.
JavidiMGhassemiALalehparvarMM. Amine corrosion and amine cracking of API 5L X52 carbon steel in the presence of hydrogen sulphide and carbon dioxide. Corr Eng Sci Technol2017; 52: 510–519.
3.
SunYRemiasJNeatheryJ,et al.Electrochemical study of corrosion behaviour of carbon steel A106 and stainless steel 304 in aqueous monoethanolamine. Corr Eng Sci Technol2011; 46: 724–731.
4.
PalmeroELa RubiaMSánchez-BautistaA, et al.Study of corrosion of AISI 420 in the CO2 absorption process using 2-amino-2-methyl-1-propanol aqueous solutions. Corr Eng Sci Technol2013; 48: 136–142.
5.
PanahiHEslamiAGolozarM. Effect of heat stable acids on corrosion and stress corrosion cracking initiation of 304 and 316 stainless steels in activated methyl diethanol amine (aMDEA) solution. Corr Eng Sci Technol2020; 55: 57–65.
6.
AbkhizVHeydariI. Comparison of amine solutions performance for gas sweetening. Asia-Paci J Chem Eng2014; 9: 656–662.
7.
ChenGChenGPeruzziniM, et al.Understanding the potential benefits of blended ternary amine systems for CO2 capture processes through 13C NMR speciation study and energy cost analysis. Sep Purif Technol2022; 291: 120939.
8.
ZhangRLiuRBarzagliF, et al.CO2 Absorption in blended amine solvent: speciation, equilibrium solubility and excessive property. Chem Eng J2023; 466: 143279.
9.
ChoubtashaniSRashidiH. CO2 Capture process intensification of water-lean methyl diethanolamine-piperazine solvent: experiments and response surface modeling. Energy2023; 267: 126447.
10.
Hosseini-ArdaliSMHazrati-KalbibakiMFattahiM,et al.Multi-objective optimization of post combustion CO2 capture using methyldiethanolamine (MDEA) and piperazine (PZ) bi-solvent. Energy2020; 211: 119035.
11.
YuLCYSadeekSWilliamsDR,et al.Investigating the corrosion due to high capacity and uptake promoter amine blends on carbon steel. Energy Procedia2017; 114: 1998–2008.
12.
TemsRAl-ZahraniA. Cost of corrosion in oil production and refining. Saudi Aramco Journal of Technology2006; 2: 14.
13.
ChoiY-SDuanDNesicS, et al.Effect of oxygen and heat stable salts on the corrosion of carbon steel in MDEA-based CO2 Capture process. Corrosion2010; 66: 125004–125010.
14.
CampbellKLSZhaoYHallJJ,et al.The effect of CO2-loaded amine solvents on the corrosion of a carbon steel stripper. Int J Greenhouse Gas Cont2016; 47: 376–385.
15.
XiangYChoiY-SYangY,et al.Corrosion of carbon steel in MDEA-based CO2 Capture plants under regenerator conditions: effects of O2 and heat-stable salts. Corrosion2015; 71: 30–37.
16.
GongQWuHYangF,et al.Corrosion of pipeline steel weld metals containing alloying elements in CO2/H2S environment. Gas Sci Eng2023; 109: 104846.
17.
LiMZhangPChenG,et al.The performance and mechanism of CO2 desorption and corrosion in N-methyldiethanolamine aqueous solutions blended with amino acid ionic liquids. Int J Greenhouse Gas Cont2023; 125: 103875.
18.
ZhangNZengDXiaoG, et al.Effect of cl− accumulation on corrosion behavior of steels in H2S/CO2 methyldiethanolamine (MDEA) gas sweetening aqueous solution. Journal of Natural Gas Science and Engineering2016; 30: 444–454.
19.
XiangYLongZLiC,et al.Neutralization and adsorption effects of Various alkanolamines on the corrosion behavior of N80 steel in supercritical CO2 with impurities. Corrosion2019; 75: 999–1011.
20.
Adel-MehrabanFSaidiRMoradmandM, et al.Evaluation of the corrosion performance of carbon steel and 316 stainless steel in aMDEA solution used in the CO2 Absorption/Desorption Process. J Adv Mat Eng (Esteghlal)2023; 42(3): 1–15.
21.
SuiPSunJHuaY, et al.Effect of temperature and pressure on corrosion behavior of X65 carbon steel in water-saturated CO2 transport environments mixed with H2S. Int J Greenhouse Gas Cont2018; 73: 60–69.
22.
ClosmannFB. 2011.
23.
A. S. f. Testing and Materials. ASTM G31-72: standard practice for laboratory immersion corrosion testing of metals. West Conshohocken, PA, USA: ASTM, 2004.
24.
DavoudiMSafadoustARAkbar MansooriSA,et al.The impurities effect on thermal degradation and corrosivity of amine solution in south pars gas sweetening plants. J Nat Gas Sci Eng2014; 19: 116–124.
25.
GunasekaranP. Corrosion evaluation for absorption-based CO2 capture process using single and blended amines. Regina, Saskatchewan, Canada: Faculty of Graduate Studies and Research, University of Regina, 2012.
26.
GhalibLAliBSMazariS, et al.Modeling the effect of piperazine on carbon steel corrosion rate in carbonated activated MDEA solutions. Int J Electrochem Sci2016; 11: 4560–4585.
27.
FischerKB. Corrosion of stainless and carbon steel in aqueous amine for CO2 capture. Austin, TX, USA: The University of Texas, 2019.
