Failure analysis of mechanical seal of nitrobenzene sulfuric acid pump

doi:10.1016/j.engfailanal.2022.106660

IMR OpenIR

	Failure analysis of mechanical seal of nitrobenzene sulfuric acid pump
	Pan, Haodan 1; Li, Donghao 1; Hu, Hongxiang 2
通讯作者	Pan, Haodan(panhaodan@126.com) ; Hu, Hongxiang(hxhu@imr.ac.cn)
	2022-11-01
发表期刊	ENGINEERING FAILURE ANALYSIS
ISSN	1350-6307
卷号	141 页码:14
摘要	Sulfuric acid pumps serving in the nitrobenzene process failed many times due to the mechanical seal's failure in a chemical plant. To clarify the failure reasons, damage characteristics were examined by visual inspection, scanning electron microscopy, and energy dispersive spectros-copy. Moreover, the possibility of the galvanic corrosion was confirmed by the designed tests, and the effects of the pure sulfuric and mixed acid on the corrosion were also clarified by the im-mersion tests. The results show that the material degrades in the form of intergranular corrosion. The most severe damage locates in the sealing gland, in contact with the static ring seat. Galvanic corrosion is mainly responsible for the failure. The differences in the chemical compositions and the microstructure play an important role in galvanic corrosion. Moreover, some suggestions are provided to alleviate the corrosion based on the analysis above.
关键词	Failure analysis Mechanical seal Galvanic corrosion Acid corrosion Sulfuric acid
DOI	10.1016/j.engfailanal.2022.106660
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Characterization & Testing
WOS记录号	WOS:000848253900002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175074
专题	中国科学院金属研究所
通讯作者	Pan, Haodan; Hu, Hongxiang
作者单位	1.Liaoning Petrochem Univ, Coll Petr Engn, Fushun 113301, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Pan, Haodan,Li, Donghao,Hu, Hongxiang. Failure analysis of mechanical seal of nitrobenzene sulfuric acid pump[J]. ENGINEERING FAILURE ANALYSIS,2022,141:14.
APA	Pan, Haodan,Li, Donghao,&Hu, Hongxiang.(2022).Failure analysis of mechanical seal of nitrobenzene sulfuric acid pump.ENGINEERING FAILURE ANALYSIS,141,14.
MLA	Pan, Haodan,et al."Failure analysis of mechanical seal of nitrobenzene sulfuric acid pump".ENGINEERING FAILURE ANALYSIS 141(2022):14.