Effect of flow induced corrosion and erosion on failure of a tubular heat exchanger

被引：47
|
作者：
Ranjbar, Khalil [1 ]
机构：
[1] Shahid Chamran Univ, Fac Engn, Dept Mat, Ahvaz 61355, Iran
来源：
MATERIALS & DESIGN | 2010年 / 31卷 / 01期
关键词：
Dealloying - Heat exchangers - Chemical analysis - Binary alloys - Copper alloys - Cooling water - Steam power plants - Outages;
D O I：
10.1016/j.matdes.2009.06.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Failure of a tubular heat exchanger made up of copper based alloys in a steam power plant was investigated. Tubes were made initially from yellow brass, and there after replaced by Cu-5Ni alloys. Circulating water from cooling tower was used as coolant, to condense the hot steam inside the steel shell. The velocity of cooling water was found to be very low, causing accumulation of deposits, reduction of diameter and some times complete blockage of tubes. The causes of failure were investigated performing various tests such as chemical analysis, XRD, optical, and SEM examination. Study revealed that tube material suffering from extensive dealloying and impingement attack. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：613 / 619
页数：7
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