水的电化学处理对碳钢腐蚀行为的影响  

The Effect of Electrochemical Treatment of Water on the Corrosion Behavior of Carbon Steel

作　　者：魏志朝 胡斌 WEI Zhichao;Hu Bin

机构地区：[1]上海洗霸科技股份有限公司,上海200437 [2]中石油塔里木油田公司英买采油气管理区,新疆库尔勒841000

出　　处：《上海化工》2024年第6期28-33,共6页Shanghai Chemical Industry

摘　　要：采用单因素实验法研究了循环水电化学处理对碳钢腐蚀行为的影响及控制,从极板间距、电解时间、电流密度、电极浸泡时间和循环水离子浓度等方面进行实验并详细分析循环水水质对碳钢腐蚀的影响,包括pH,电导率,氯离子质量浓度和硬度等。结果显示,随着极板间距减小、电流密度增大和电解时间延长,碳钢的耐腐蚀性能降低。当循环水中离子浓度增大特别是氯离子质量浓度增大时,会促进碳钢的腐蚀。所以在进行循环水电化学处理时,增大极板间距、减小电流密度、减少电解时间、控制循环水中氯离子和钙离子浓度,可以有效减缓碳钢在循环水电化学系统中的腐蚀情况。通过优化循环水的化学环境和添加缓蚀剂,可以极大地减少碳钢的腐蚀,延长设备的使用寿命,提高工业生产的效率和安全性。The study investigated the impact and control of electrochemical treatment of circulating water on the corrosion behavior of carbon steel using the single-factor experimental method.Experiments were conducted and a detailed analysis was performed on the effects of water quality factors in circulating water on the corrosion of carbon steel,including pH value,conductivity,chloride ion concentration,and hardness.The results show that as the distance between electrodes decrease,the current density and electrolysis time increase,the corrosion resistance of carbon steel decrease.When the ion concentration in the circulating water increases,especially the chloride ion concentration,it will promote the corrosion of carbon steel.Therefore,during the electrochemical treatment in circulating water,increasing the distance between electrodes,reducing the current density and decreasing electrolysis time,and controlling the concentration of chloride and calcium ions in the circulating water can effectively slow down the corrosion of carbon steel in the electrochemical system.By optimizing the chemical environment of the circulating water and adding corrosion inhibitors,the corrosion of carbon steel can be greatly reduced,extending the service life of equipment,and improving the efficiency and safety of industrial production.

关 键 词：循环冷却水 电化学处理 碳钢 腐蚀 缓蚀剂 

分 类 号：TG174[金属学及工艺—金属表面处理]