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1. 新疆大学化工学院
2. 新疆大学煤炭清洁转化与化工过程自治区重点实验室
Published:2021
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[1]陈丽娟,魏博,徐向红.某台循环水换热器管束腐蚀分析与防护[J].新疆大学学报(自然科学版)(中英文),2021,38(02):163-167.
[1]陈丽娟,魏博,徐向红.某台循环水换热器管束腐蚀分析与防护[J].新疆大学学报(自然科学版)(中英文),2021,38(02):163-167. DOI: 10.13568/j.cnki.651094.651316.2020.09.01.0001.
DOI:10.13568/j.cnki.651094.651316.2020.09.01.0001.
采用宏观形貌观察、X衍射分析、红外光谱分析和热重分析
对某化工厂运行约半年即泄漏的20#钢换热管进行了腐蚀过程分析.结果表明:管内壁结垢严重
发生了垢下腐蚀;同时
Cl在垢下闭塞区中富集并引发"自催化"效应
加速了垢下腐蚀的进程
导致换热管半年内就发生泄漏.
The corrosion process of heat exchange tube made by 20 steel
which has been leaking for about half a year in a chemical plant
was analyzed by means of macroscopic morphology observation
X-ray diffraction analysis
infrared spectrum analysis and thermogravimetric analysis. The results show that the scale on the inner wall of the tube is serious
and the corrosion under the scale occurs. At the same time
Cl accumulates in the occluded area under the scale and causes the autocatalytic effect
which further accelerates the process of the corrosion
and causes the leakage of the heat exchange tube within half a year.
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