HAl77-2铜合金管在低温多效海水淡化装置中的耐蚀性
Corrosion Resistance Analysis of HAl77-2 Copper Alloy Tubes in Low Temperature Muti-effect Desalination Device for Seawater
摘 要
采用实验室模拟研究的方法, 通过腐蚀电化学测试和腐蚀形貌观察, 借助表面物相结构和元素成分分析, 比较了3种海水淡化所用的HAl77-2铜合金热交换管的耐蚀性以及平均晶粒度, 分析了它们在海水介质中的腐蚀失效机制。结果表明:HAl77-2铜合金管的电化学阻抗均随浸泡时间的延长而逐渐增大, 在达到极大值后, 又会出现在极大值附近波动的现象; 相比较而言, 1号管样的耐蚀性最好、晶粒度最小, 而3号管样的耐蚀性最差、晶粒度最大。
HAl77-2铜合金管
海水淡化
耐蚀性
low temperature multi-effect distillation (LT-MED)
HAl77-2 copper alloy tube
seawater desalination
corrosion resistance
Abstract
The performance of three kinds of HAl77-2 copper alloy tubes from different companies was studied by the simulative seawater corrosion experiment. The electrochemical impedance spectroscopy (EIS) and the potentiodynamic polarization curve method were used to investigate their corrosion resistance. The surface morphology after the simulated corrosion test was examined by scanning electron microscopy (SEM). Mean grain sizes of three kinds of copper alloy tubes were calculated. The results show that the electrochemical impedance of the HAl77-2 copper alloy tubes increased with the immersion time until a maximum, and then fluctuated around the maximum. In comparison, the 1# tube had the best corrosion resistance with the greatest mean grain size, and the 3# tube had the worst corrosion resistance with the least mean grain size.
中图分类号 TG172.5 DOI 10.11973/fsyfh-201606011
所属栏目 试验研究
基金项目 上海市产业化标准项目(14DZ0500700)
收稿日期 2015/3/27
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备注张建丽(1968-), 教授级高工, 从事电厂化学与海水淡化研究,
引用该论文: ZHANG Jian-li,ZHU Li-hua,WANG Da-peng,GAO Li-xin,ZHANG Da-quan. Corrosion Resistance Analysis of HAl77-2 Copper Alloy Tubes in Low Temperature Muti-effect Desalination Device for Seawater[J]. Corrosion & Protection, 2016, 37(6): 484
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参考文献
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【7】MABROUK A A, BOUROUNI K, ABDULRAHIM H K, et al. Impacts of tube bundle arrangement and feed flow pattern on the scale formation in large capacity MED desalination plants[J]. Desalination, 2015, 357:275-285.
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【14】罗宇峰, 钟澄, 张莉, 等. 纳米铜薄膜氧化反应动力学规律研究[J]. 化学学报, 2007, 65(15):521-1526.
【15】李珂, 张平, 刘慧娟, 等. 晶粒度对铜点蚀行为的影响[J]. 腐蚀与防护, 2013, 34(11):972-976.
【2】于开录, 吕庆春, 阮国岭. 低温多效蒸馏海水淡化工程与技术进展[J]. 中国给水排水, 2008, 24(22):82-85.
【3】郝青哲, 史洋. 沿海电厂海水淡化技术应用现状[J]. 东北电力技术, 2014, 11(7):50-52.
【4】GE Z, YANG C, LIU Y, et al. Analysis of plate multi-effect distillation system coupled with thermal power generating unit[J]. Applied Thermal Engineering, 2014, 67(1):35-42.
【5】QI C, FENG H, LV Q, et al. Performance study of a pilot-scale low-temperature multi-effect desalination plant[J]. Applied Energy, 2014, 135:415-422.
【6】SEMIAT R, GALPERIN Y. Effect of non-condensable gases on heat transfer in the tower MED seawater desalination plant[J]. Desalination, 2001, 140(1):27-46.
【7】MABROUK A A, BOUROUNI K, ABDULRAHIM H K, et al. Impacts of tube bundle arrangement and feed flow pattern on the scale formation in large capacity MED desalination plants[J]. Desalination, 2015, 357:275-285.
【8】李超, 张建丽, 黄桂桥, 等. 国产海水淡化装置铝黄铜换热管腐蚀调查分析[J]. 装备环境工程, 2014, 11(3):105-109.
【9】邹积强, 张丽华. HAI77-2A海水淡化蒸发塔结垢堵塞及清洗[J]. 石油化工腐蚀与防护, 2009, 25(4):45-47.
【10】赵永韬, 李海洪, 陈光章. 铜合金在海水中电化学阻抗谱特征研究[J]. 海洋科学, 2005, 29(7):21-25.
【11】叶成龙, 武杰, 佘坚, 等. HAl77-2黄铜在流动海水中的电化学行为[J]. 中国腐蚀与防护学报, 2008, 28(1):16-19.
【12】HONG S, CHEN W, LUO H Q, et al. Inhibition effect of 4-amino-antipyrine on the corrosion of copper in 3wt% NaCl solution[J]. Corrosion Science, 2012, 57:270-278.
【13】RAVINDRANATH K, TANOLI N, GOPAL H. Failure investigation of brass heat exchanger tube[J]. Engineering Failure Analysis, 2012, 26:332-336.
【14】罗宇峰, 钟澄, 张莉, 等. 纳米铜薄膜氧化反应动力学规律研究[J]. 化学学报, 2007, 65(15):521-1526.
【15】李珂, 张平, 刘慧娟, 等. 晶粒度对铜点蚀行为的影响[J]. 腐蚀与防护, 2013, 34(11):972-976.
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