铁-水体系电位-ph图与氧化性水工况的腐蚀控制 corrosion control of oxidative water condition and potential-ph chart of ferrum-water system.pdfVIP
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铁-水体系电位-ph图与氧化性水工况的腐蚀控制 corrosion control of oxidative water condition and potential-ph chart of ferrum-water system
华北电力技术 NORTHCHINAELECTRICPOWER 23 铁.水体系电位一pH图与氧化性水工况的腐蚀控制 谢学军,王 浩,邹品果,潘 玲 (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lO斗g/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一水体系的电位-pH图统一,不能再以lO~moL/L(即56斗g/L)作为钢铁 腐蚀与否的界限,而必须以10“‘”mol/L(即10恤g/L)作为腐蚀发生与否的界限,绘制铁-水体系的简化电位· pH平衡图时篮须在平衡计算中将离子浓度均取101。”mol/L(即10pg/L)。 关键词:氧化性水工况;铁一水体系;电位一pH图 中图分类号:TM621.8文献标识码:A 文章编号:1003-917l(2011)05一0023旬3 WaterConditionand CorrosionControlofoxidative ChaIttofFernlm-Water PotentiaI-pH System Xie Xue-jun,WangHao,ZouPin—guo,PanLing of andMechanical wuhan (Sehool“Power En百neering uniVersity,Wuhan430072,China) once boiler oxidatiVewatercondition itis tha£the Abstract:7I’he presently,andrequired super—criticalthmughadopts oxi— fe咖mioncontentinthe watershouldbelowerthan1 thecorrosion ofthe unify controUing supplied 0斗g/L.To dativewaterconditionandthe chartofthefe咖m.water isconsideredthat10-6。7,mol/L potential.pH system,it be limitto theco玎osion.At morereasonablethan the (namely10“g/L)is 10~mol/L(namely56斗g/L)to judge thesame chanoffernlm.waterisdmwnwhichioncontentischosenas10-6。75mol/L time,thepotential.pH system the balancecalculation. (namely10斗g/L)in water chart Keywords:oxidativecondition;fe删m·water
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