Effect of H2S on CO2 Corrosion of Mild Steel in High Temperature Supercritical CO2 Condition

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2023-07-12 DOI:10.5006/4355

Yoon-Seok Choi, F. Farelas, L. Paolinelli, S. Nešić, A. Z. Abas, A. Nor, M. Suhor

引用次数: 0

Abstract

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 CO2 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 (SEM, EDS, and XRD). Results showed that the corrosion rate decreased with time and no significant difference was observed in the presence of 1000 and 2000 ppm of H2S at HPHT CO2 conditions. Surface and cross-sectional analyses revealed that the corrosion process was governed by the formation of FeCO3 regardless of the presence of H2S. Furthermore, the corrosion behavior of mild steel in these conditions did not depend significantly on flow velocity.

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高温超临界CO2条件下H2S对低碳钢CO2腐蚀的影响

在12 MPa的CO2分压和160°C的温度下，在高压和高温（HPHT）条件下评估了H2S对软钢水腐蚀行为的影响。通过电化学和失重测量来测定钢样品的腐蚀速率。使用表面分析技术（SEM、EDS和XRD）分析了腐蚀产物层的表面和横截面形态以及成分。结果表明，在HPHT CO2条件下，在1000和2000ppm的H2S存在下，腐蚀速率随时间降低，没有观察到显著差异。表面和横截面分析表明，无论是否存在H2S，腐蚀过程都由FeCO3的形成控制。此外，低碳钢在这些条件下的腐蚀行为与流速没有显著的关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.