Improving the corrosion resistance of a cooling water system at an ammonium sulfate crystallization plant by corrosion inhibitors

被引：0
|
作者：
Murillo, FR [1 ]
Alonso, AA [1 ]
Sánchez, RT [1 ]
机构：
[1] Univ Michoacana, Inst Invest Met, Morelia, Michoacan, Mexico
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2002年 / 53卷 / 11期
关键词：
D O I：
10.1002/1521-4176(200211)53:11<820::AID-MACO820>3.0.CO;2-L
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper deals with some analyzed corrosion problems occurred in a cooling water system at an ammonium sulfate crystallization plant. A visual inspection to the cooling system was realized to evaluate the corrosion situation of the cooling system and determine the factors, which promoted corrosion damage. Chemical and physical properties of the water at the cooling system were determined, and corrosion rate measurements by different procedures were carried out. To improve efficiency, sodium monophosphate and thiourea, were added to one commercial inhibitor used at present. To evaluate the effectiveness of the modified inhibitor, a series of potentiodynamic polarization curves were accomplished. It was found that the best result was obtained by using sodium monophosphate at 500 ppm in the commercial corrosion inhibitor.
引用
收藏
页码：820 / 826
页数：7
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