Corrosion Behavior of X52 Steel in Triethylene Glycol Solution Containing H2S/CO2 Gas Mixture
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摘要: 借助静态常温常压釜和CHI660D电化学工作站，研究了X52钢在含H2S/CO2混合气体的80%（质量分数）三甘醇溶液中的腐蚀行为，同时借助JC2000C1接触角/界面张力测量仪研究了冷凝水及三甘醇对X52钢的浸润性。结果表明：在含H2S/CO2混合气体的三甘醇溶液中X52钢的腐蚀速率比在同样含H2S/CO2混合气体的冷凝水中的低；在三甘醇溶液浸泡后的X52钢表面几乎无腐蚀产物堆积，但存在局部点蚀坑；80%三甘醇溶液对管壁造成的腐蚀面积比相同体积的冷凝水的更大。Abstract: The corrosion behavior of X52 steel in 80% (mass fraction) triethylene glycol solution containing H2S/CO2 gas mixture was studied using static normal temperature and pressure autoclave and CHI660D electrochemical workstation. At the same time, the wettability of condensed water and triethylene glycol solution to X52 steel was studied by means of JC2000C1 contact angle and interface tension meter. The results show that the corrosion rate of X52 steel in the triethylene glycol solution containing H2S/CO2 gas mixture was lower than that in the condensed water containing H2S/CO2 gas mixture. There were few corrosion products and some pits on the surface of X52 steel after immersion in triethylene glycol solution. The 80% triethylene glycol solution caused a larger corrosion area on the pipe wall than the same volume of the condensed water.
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Keywords:
- triethylene glycol solution /
- X52 steel /
- corrosion behavior /
- pitting corrosion /
- wettability
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