Corrosion performance of carbon/stainless steel in amine-based solvents under different conditions for CO2 chemical absorption process

IF 2.7 4区环境科学与生态学 Q3 ENERGY & FUELS

Greenhouse Gases: Science and Technology Pub Date : 2023-12-06 DOI:10.1002/ghg.2250

Yuwei Wang, Mengxiang Fang, Tao Wang, Jun Gao, Yan Huang, Shuifei Li, Xiaozheng Lu, Yuhang Sun, Feng Zhang

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Abstract

The overall corrosion behavior of S304 stainless steel and A3 carbon steel in 30 wt.% MEA (monoethanolamine) and AMP/MEA (2-amino-2-methyl-1-propanol / monoethanolamine) blended amine solutions at 40–100°C was investigated. The characterization analysis of the corroded material surfaces was performed, and the changes in the properties of both solvents after long-term immersion corrosion were measured, including the accumulation of heat stable salts (HSS) and viscosity changes. The results of the long-term immersion corrosion experiments showed that the corrosion rate of S304 stainless steel was significantly lower than that of A3 carbon steel in both amine solutions. However, the corrosion rate of both materials exhibited a similar trend, initially decreasing and then stabilizing over time. Due to the higher concentration of carbonate ions in the AMP/MEA system, it exhibited better overall corrosion resistance and degradation resistance compared to the MEA system. The main component of the corrosion product on carbon steel was identified as Fe₂(OH)₂CO₃. The electrochemical test results showed that the corrosion current of S304 stainless steel was much smaller than that of A3 carbon steel, and its charge transfer resistance was much higher, indicating that it was less prone to electron loss in the organic amine solutions. Additionally, the AMP/MEA system exhibited superior corrosion resistance. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

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二氧化碳化学吸收过程中不同条件下胺基溶剂对碳钢/不锈钢的腐蚀性能

研究了 S304 不锈钢和 A3 碳钢在 30 wt.% 的 MEA（单乙醇胺）和 AMP/MEA（2-氨基-2-甲基-1-丙醇/单乙醇胺）混合胺溶液中于 40-100°C 下的整体腐蚀行为。对被腐蚀的材料表面进行了表征分析，并测量了两种溶剂在长期浸泡腐蚀后的性质变化，包括热稳定盐（HSS）的积累和粘度变化。长期浸泡腐蚀实验结果表明，在两种胺溶液中，S304 不锈钢的腐蚀速率明显低于 A3 碳钢。不过，两种材料的腐蚀速率表现出相似的趋势，最初都在下降，然后随着时间的推移趋于稳定。由于 AMP/MEA 体系中的碳酸根离子浓度较高，因此与 MEA 体系相比，AMP/MEA 体系表现出更好的整体耐腐蚀性和耐降解性。经鉴定，碳钢上腐蚀产物的主要成分是 Fe2(OH)2CO3。电化学测试结果表明，S304 不锈钢的腐蚀电流比 A3 碳钢小得多，电荷转移电阻也高得多，这表明它在有机胺溶液中不易失去电子。此外，AMP/MEA 系统还表现出更优越的耐腐蚀性。© 2023 化学工业协会和 John Wiley & Sons, Ltd. 保留所有权利。

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来源期刊

Greenhouse Gases: Science and Technology ENERGY & FUELS-ENGINEERING, ENVIRONMENTAL

CiteScore

4.90

自引率

4.50%

发文量

审稿时长

3 months

期刊介绍： Greenhouse Gases: Science and Technology is a new online-only scientific journal dedicated to the management of greenhouse gases. The journal will focus on methods for carbon capture and storage (CCS), as well as utilization of carbon dioxide (CO2) as a feedstock for fuels and chemicals. GHG will also provide insight into strategies to mitigate emissions of other greenhouse gases. Significant advances will be explored in critical reviews, commentary articles and short communications of broad interest. In addition, the journal will offer analyses of relevant economic and political issues, industry developments and case studies. Greenhouse Gases: Science and Technology is an exciting new online-only journal published as a co-operative venture of the SCI (Society of Chemical Industry) and John Wiley & Sons, Ltd