低频电磁场处理中水的静态阻垢缓蚀试验研究

来源期刊：钢铁2009年第6期

论文作者：迟金宝 张雪峰 苍大强 赵民 常瑞卿

文章页码：89 - 93

关键词：中水； 循环冷却水； 磁化水处理； 阻垢； 缓蚀

Key words：reclaimed water； circulating cooling water； magnetic water treatment； scale inhibition； corrosion inhibition

摘    要：针对循环冷却水运行过程中常出现的结垢与腐蚀问题,采用低频梯度电磁场对中水进行静态水质稳定试验。通过正交试验对磁场运行参数进行优化后,一次性过磁处理可以使阻垢率达到21.46%,缓蚀率达到12.31%;经多次性循环过磁处理可以使二者进一步提高,2.0h的多次循环处理阻垢率可提高到35.30%,缓蚀率可提高到17.50%。通过SEM与XRD分析发现,电磁处理能够改变碳酸钙晶体的结构形态,可以促进铁表面形成致密的γ-Fe₂O₃氧化膜,起到缓蚀作用。

Abstract: According to scaling and corrosion problems during operation process of circulating cooling water,static water quality stabilization experiment was conducted on treatment reclaimed water with low frequency gradient electromagnetic field.After optimizing the electromagnetic operation parameters by orthogonal experiment,the scale inhibiting rate came to 21.46% and the corrosion inhibition came to 12.31% under disposable electromagnetic treatment.These two values could be improved to 35.30% and 17.50% respectively,after multiple circulating electromagnetic treatments for 2.0 h.By using SEM(Scanning Electronic Microscope)and XRD(X-Ray Diffraction),electromagnetic treatment could change structural morphology of CaCO₃ crystal,promote formatting of compact γ-Fe₂O₃ oxide film on iron surface,which is against corrosion.