Inhibition of N80 steel corrosion in impure supercritical CO2 and CO2-saturated aqueous phases by using imino inhibitors
Inhibition of N80 steel corrosion in impure supercritical CO2 and CO2-saturated aqueous phases by using imino inhibitors
复制标题
亚氨基缓蚀剂抑制 N80 钢在不纯超临界 CO2 和 CO2 饱和水相中的腐蚀
DOI：
10.1016/j.ijggc.2017.05.010
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发表时间：
2017-08
影响因子：
3.9
通讯作者：
He Xiaojun
中科院分区：
文献类型：
--
作者：
Xiang Yong;Long Zhengwei;Li Chen;Huang Huaiwei;He Xiaojun
在碳捕集与封存系统中，含各种杂质的超临界CO2相对钢铁的腐蚀已被广泛研究，但使用缓蚀剂抑制钢铁腐蚀的研究却很少。研究了咪唑啉和哌嗪对N80钢在饱和超临界CO2水相和含SO2、NO2和O2的饱和超临界CO2水相中的缓蚀作用。结果表明，当哌嗪浓度从300 ppm增加到1000 ppm时，水相中哌嗪的缓蚀率从64%增加到86%。在所有情况下，在超临界CO2相的缓蚀效率低于在相同的测试条件下的水相。相比之下，咪唑啉的缓蚀效果可以忽略不计，并且在超临界CO2和水相中发现了严重的局部腐蚀。pH值测定结果表明，哌嗪具有显著的中和作用，是一种潜在的pH值稳定剂。Fe3C可能存在于钢的表面，产物中含有Fe2（SO4）3。然而，在不纯的超临界CO2相中的钢腐蚀抑制仍然具有挑战性。
Steel corrosion has been widely investigated during supercritical CO2phase with various impurities in carbon capture and storage system; however, the use of inhibitors to suppress steel corrosion has been rarely studied. This work investigated the corrosion inhibition effect of imidazoline and piperazine on N80 steel in water-saturated supercritical CO2phase and supercritical CO2-saturated aqueous phase with impurities (SO2, NO2, and O2). Results showed that the inhibition efficiency of piperazine increased from 64% to 86% in the aqueous phase when the piperazine concentration increased from 300 ppm to 1000 ppm. In all cases, the inhibition efficiency in the supercritical CO2phase was lower than that in the aqueous phase under the same test conditions. By contrast, the inhibition effect of imidazoline was negligible, and severe localized attacks were found within deep pits in supercritical CO2and aqueous phases. Based on the pH measurement results, piperazine exhibited remarkable neutralization effect and thus could be a potential pH stabilizer. Fe3C possibly resided on the steel surface, and Fe2(SO4)3was confirmed in the product scale. Nevertheless, steel corrosion inhibition in impure supercritical CO2phase remains challenging.
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DOI：
10.1016/j.egypro.2014.11.277
发表时间：
2014
期刊：
Energy Procedia
影响因子：
--
作者：
A. Dugstad;M. Halseid;Bjørn H. Morland
通讯作者：
A. Dugstad;M. Halseid;Bjørn H. Morland
影响因子：
1.6
作者：
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通讯作者：
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影响因子：
8.3
作者：
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通讯作者：
Turgoose, S
影响因子：
8.3
作者：
Wei, Liang;Pang, Xiaolu;Gao, Kewei
通讯作者：
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影响因子：
1.8
作者：
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通讯作者：
Y. Xiang;Weichao Yan;J. Wang