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首页> 外文期刊>Journal of natural gas science and engineering >Modeling and experimental study of CO2 corrosion on carbon steel at elevated pressure and temperature
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Modeling and experimental study of CO2 corrosion on carbon steel at elevated pressure and temperature

机译：高温高压下碳钢对CO2腐蚀的建模与实验研究

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Corrosion of carbon steel in carbonic acid environment largely depends on surrounding conditions such as CO2 partial pressure, temperature, flow velocity, and water chemistry. This article presents results of experimental and theoretical investigations conducted on corrosion of carbon steel (AISI C1045) in brine (2% NaCl solution) saturated with mixed gas containing carbon dioxide and nitrogen. Experiments were carried out in a 2-liter autoclave at 0.83 MPa varying temperature and CO2 partial pressure. Linear polarization resistance (LPR) and weight loss (WL) techniques were utilized to measure corrosion rate. Test duration was 187 h. In the presence of CO2, corrosion rate increased sharply in the first 10 h, followed by sharp reduction. Results show that temperature is the most dominant factor in affecting CO2 corrosion. The maximum corrosion with and without the presence of CO2 was observed at 43 degrees C.
机译：碳钢在碳酸环境中的腐蚀很大程度上取决于周围的条件，例如CO2分压，温度，流速和水化学性质。本文介绍了对碳钢（AISI C1045）在饱和了含二氧化碳和氮气的混合气体的盐水（2％NaCl溶液）中进行腐蚀的实验和理论研究的结果。在2升高压釜中于0.83 MPa的温度和CO2分压下进行实验。线性极化电阻（LPR）和重量损失（WL）技术用于测量腐蚀速率。测试时间为187小时。在存在二氧化碳的情况下，腐蚀速率在最初的10小时内急剧增加，然后急剧降低。结果表明，温度是影响CO2腐蚀的最主要因素。在43摄氏度下观察到有或没有CO2的最大腐蚀情况。

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