کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5013668 | 1462953 | 2017 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Failure analysis on abnormal corrosion of economizer tubes in a waste heat boiler
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Failure analysis on abnormal corrosion of economizer tubes in a waste heat boiler Failure analysis on abnormal corrosion of economizer tubes in a waste heat boiler](/preview/png/5013668.png)
چکیده انگلیسی
Repeated shell side corrosion occurred on economizer tubes of a waste heat boiler. In order to find out the root cause of the corrosion, a series of characterization methods were conducted. First of all, the tubes were proved to be qualified A106 Gr.A steel in chemical compositions and metallographic structures. Then, both macroscopic and microscopic characteristics of the failed tube were observed thoroughly. After that, phase compositions of the deposits collected from failed tubes were analyzed. Content of sulfur and nitrogen of deposits was determined precisely as well. The results revealed that repeated failures were primarily owing to sulfuric acid dew point corrosion and the sulfur mainly came from waste liquid of methyl methacrylate (MMA). Finally, mechanisms of the failure were discussed in detail and practical countermeasures were put forward.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 73, March 2017, Pages 129-138
Journal: Engineering Failure Analysis - Volume 73, March 2017, Pages 129-138
نویسندگان
Qun Ding, Xiao-Feng Tang, Zhen-Guo Yang,