Widyanto Bambang, Suputra Wiguna I Gede Bagus Eka
Materials Engineering, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia.
Heliyon. 2019 Jun 28;5(6):e02006. doi: 10.1016/j.heliyon.2019.e02006. eCollection 2019 Jun.
Top of line (TOL) corrosion is a common corrosion case found on pipe that flows wet gas in oil and gas industry. The present study aims to evaluate the impact of mono ethylene glycol (MEG) on the TOL corrosion rate of low carbon steel in acidic environment with increased temperature. The study was conducted at temperature 50 °C and 70 °C in a solution containing 2000 ppm of acetic acid and 50 % volume of MEG. There are four types of experimental conditions with variation in the temperature and MEG content were used. The result present that MEG effectively reduce the condensation rate and TOL corrosion rate of low carbon steel at elevated temperature environment. This revealed that increasing of TOL corrosion inhibition effect along the experimental period. Moreover, the increased level of severity was associated with increased temperature. The results concluded that this procedure resulted due to decrease in condensation rate that is likely to reduce the supply of electrolyte for the corrosion reaction.
顶级（TOL）腐蚀是石油和天然气行业中输送湿气的管道上常见的腐蚀情况。本研究旨在评估单乙二醇（MEG）在温度升高的酸性环境中对低碳钢TOL腐蚀速率的影响。该研究在50℃和70℃的温度下，于含有2000 ppm乙酸和50%体积MEG的溶液中进行。使用了四种实验条件，温度和MEG含量有所变化。结果表明，MEG在高温环境下能有效降低低碳钢的冷凝速率和TOL腐蚀速率。这表明在实验期间TOL缓蚀效果增强。此外，严重程度的增加与温度升高有关。结果得出，此过程是由于冷凝速率降低导致的，这可能会减少腐蚀反应电解质的供应。
