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铁-水体系电位-pH图与氧化性水工况的腐蚀控制
引用本文:谢学军,王浩,邹品果,潘玲.铁-水体系电位-pH图与氧化性水工况的腐蚀控制[J].华北电力技术,2011(5):23-25.
作者姓名:谢学军  王浩  邹品果  潘玲
作者单位:武汉大学动力与机械学院,湖北武汉,430072
摘    要:目前超临界直流炉大都采用氧化性水工况,要求给水中铁的含量小于10 μg/L.为使超临界直流炉采用的氧化性水工况的腐蚀控制与铁-水体系的电位-pH图统一,不能再以10-6mol/L(即56μg/L)作为钢铁腐蚀与否的界限,而必须以10-6.75mol/L(即10μg/L)作为腐蚀发生与否的界限,绘制铁-水体系的简化电位-...

关 键 词:氧化性水工况  铁-水体系  电位-pH图

Corrosion Control of Oxidative Water Condition and Potential-pH Chart of Ferrum-Water System
Xie Xue-jun,Wang Hao,Zou Pin-guo,Pan Ling.Corrosion Control of Oxidative Water Condition and Potential-pH Chart of Ferrum-Water System[J].North China Electric Power,2011(5):23-25.
Authors:Xie Xue-jun  Wang Hao  Zou Pin-guo  Pan Ling
Affiliation:(School of Power and Mechanical Engineering of Wuhan University,Wuhan 430072,China)
Abstract:The super-critical once through boiler adopts oxidative water condition presently,and it is required that the ferrum ion content in the supplied water should be lower than 10 μg/L.To unify the corrosion controlling of the oxidative water condition and the potential-pH chart of the ferrum-water system,it is considered that 10-6.75mol/L(namely 10 μg/L)is more reasonable than 10-6mol/L(namely 56 μg/L)to be the limit to judge the corrosion.At the same time,the potential-pH chart of ferrum-water system is drawn which ion content is chosen as 10-6.75mol/L(namely 10 μg/L)in the balance calculation.
Keywords:oxidative water condition  ferrum-water system  potential-pH chart
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