Effect of H_2S on CO_2 Corrosion of Mild Steel in High-Temperature Supercritical CO_2 Conditions

Yoon-Seok Choi; Fernando Farelas; Luciano Paolinelli

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Effect of H_2S on CO_2 Corrosion of Mild Steel in High-Temperature Supercritical CO_2 Conditions

机译：Effect of H_2S on CO_2 Corrosion of Mild Steel in High-Temperature Supercritical CO_2 Conditions

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The effect of H2S on the aqueous corrosion behavior of mild steel was evaluated at high-pressure and high-temperature (HPHT) conditions at a partial pressure of CO_2 of 12 MPa and a temperature of 160°C. The corrosion rate of steel samples was determined by electrochemical and weight loss measurements. The surface and cross-sectional morphology and the composition of the corrosion product layers were analyzed by using surface analytical techniques (scanning electron microscopy, energy-dispersive x-ray spectroscopy, and x-ray diffraction). Results showed that the corrosion rate decreased with time and no signi?cant difference was observed in the presence of 1,000 ppm and 2,000 ppm of H_2S at HPHT CO_2 conditions. Surface and cross-sectional analyses revealed that the corrosion process was governed by the formation of FeCO_3 regardless of the presence of H2S. Furthermore, the corrosion behavior of mild steel in these conditions did not depend signi?cantly on ?ow velocity.

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《Corrosion: The Journal of Science and Engineering》 |2023年第9期|1052-1063|共12页
作者
Yoon-Seok Choi; Fernando Farelas; Luciano Paolinelli;
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作者单位

Institute for Corrosion and Multiphase Technology, Department of Chemical & Biomolecular Engineering, Ohio University, Athens, Ohio 45701.;

Institute for Corrosion and Multiphase Technology, Department of Chemical & Biomolecular Engineering, Ohio University, Athens, Ohio 45701.;

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正文语种英语
中图分类金属腐蚀与保护、金属表面处理;
关键词
carbon steel; corrosion; H2S; high temperature supercritical carbon dioxide;

Effect of H_2S on CO_2 Corrosion of Mild Steel in High-Temperature Supercritical CO_2 Conditions

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