CAJ | 학술논문

目的：了解国产万吨级LT-MED装置铝黄铜换热管的腐蚀情况。方法通过对设备现场调研和腐蚀产物分析，对换热管的腐蚀类型和腐蚀原因进行分析，并对其腐蚀的危害性进行判断。结果铝黄铜换热管在凝结水侧发生全面腐蚀和点蚀，在海水侧主要发生轻微脱锌腐蚀。结论铝黄铜换热管在凝结水中腐蚀率很低，其全面腐蚀可以接受。换热管在凝结水侧的点蚀轻微，可对其进行定期检测。铝黄铜在海水侧的脱锌腐蚀轻微，可以忽略。换热管腐蚀程度轻微，不影响水质和设备正常运行。
목적：료해국산만둔급LT-MED장치려황동환열관적부식정황。방법통과대설비현장조연화부식산물분석，대환열관적부식류형화부식원인진행분석，병대기부식적위해성진행판단。결과려황동환열관재응결수측발생전면부식화점식，재해수측주요발생경미탈자부식。결론려황동환열관재응결수중부식솔흔저，기전면부식가이접수。환열관재응결수측적점식경미，가대기진행정기검측。려황동재해수측적탈자부식경미，가이홀략。환열관부식정도경미，불영향수질화설비정상운행。
Objective To understand the corrosion of aluminum brass tube heat exchanger in homemade 12 500 m3 · d-1 LT-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 oc-curred in seawater. Conclusion Aluminum brass tube had a very low corrosion rate in fresh water condensate, and its gen-eral 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.