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| Corrosion Analyses of Aluminum Brass Tube Heat Exchanger in Homemade Equipment for Seawater Desalination |
| Received:January 14, 2014 Revised:February 01, 2014 |
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| DOI：10.7643/issn.1672-9242.2014.03.022 |
| KeyWord:LT-MED seawater desalination HAl77-2 heat exchange tube corrosion |
| Author | Institution |
| ZHANG Jian-li |
Shenhua Guohua Beijing Electric Power Research Institute Co. , Ltd, Beijing , China |
| HUANG Gui-qiao |
Qingdao NCS Testing & Corrosion Protection Technology Co. , Ltd, Qingdao , China;Qingdao Research Institute for Marine Corrosion, Central Institute for Iron and Steel, Qingdao , China |
| ZHANG Bo |
Qingdao NCS Testing & Corrosion Protection Technology Co. , Ltd, Qingdao , China;Qingdao Research Institute for Marine Corrosion, Central Institute for Iron and Steel, Qingdao , China |
| WU Heng |
Qingdao NCS Testing & Corrosion Protection Technology Co. , Ltd, Qingdao , China;Qingdao Research Institute for Marine Corrosion, Central Institute for Iron and Steel, Qingdao , China |
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| Abstract: |
| Objective To understand the corrosion of aluminum brass tube heat exchanger in homemade 12 500 m3·d-1LT-MED equipment for Seawater desalination. Methods Field research and analysis methods for corrosion products were used to analyze the types and causes of corrosion. And the dangers of corrosion were judged. Results Aluminum brass tube showed mainly general corrosion and pitting in fresh water condensate, while slight dezincification corrosion mainly occurred in seawater. Conclusion Aluminum brass tube had a very low corrosion rate in fresh water condensate, and its general corrosion was acceptable. For the pitting at the side of fresh water consendate, regular testing could be performed. The slight dezincification corrosion in seawater could be neglected. The slight corrosion of tube heat exchanger did not affect the water quality and the normal operation of equipment. |
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