Failure analysis of mechanical seal of nitrobenzene sulfuric acid pump

doi:10.1016/j.engfailanal.2022.106660

CORC > 金属研究所 > 中国科学院金属研究所

	Failure analysis of mechanical seal of nitrobenzene sulfuric acid pump
	Pan, Haodan 2; Li, Donghao 2; Hu, Hongxiang 1
刊名	ENGINEERING FAILURE ANALYSIS
	2022-11-01
卷号	141 页码:14
关键词	Failure analysis Mechanical seal Galvanic corrosion Acid corrosion Sulfuric acid
ISSN号	1350-6307
DOI	10.1016/j.engfailanal.2022.106660
通讯作者	Pan, Haodan(panhaodan@126.com) ; Hu, Hongxiang(hxhu@imr.ac.cn)
英文摘要	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.
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000848253900002
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/175073]
专题	金属研究所_中国科学院金属研究所
通讯作者	Pan, Haodan; Hu, Hongxiang
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Liaoning Petrochem Univ, Coll Petr Engn, Fushun 113301, 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.