Mobile hydrogen monitoring in the wall of hydrogenation reactors

IMR OpenIR

	Mobile hydrogen monitoring in the wall of hydrogenation reactors
	Yu, G ; Zhang, XY ; Du, YL
通讯作者	Yu, G()
	2001
发表期刊	CORROSION
ISSN	0010-9312
卷号	57 期号:1 页码:71-77
摘要	A test technique was developed for in-situ, instantaneous, and nondestructive inspection of the distribution of mobile hydrogen in the wall of a hydrogenation reactor operating at an elevated temperature and high pressure. The base current density of the developed sensor was < 0.6 muA/cm(2) at cooling water temperatures below 313 K (40degreesC). The steady current density, i(infinity), of atomic hydrogen oxidation needed calibrating from the direct-measuring sensor signal, i(sen). The calibration equation could be expressed as i(infinity) = 1.2 i(sen). Its factor 1.2 corrects the difference in the direction change of hydrogen diffusion from one dimension in the steel wall to three dimensions in the space between the steel external surface and the external side of the Pd alloy in the sensor. The temperature of the cooling water of the sensor obviously influenced the steady permeation current density. Results of the study showed that the temperature of the sensor should be kept constant so as to assure measurement accuracy. The specifications of the developed probe available for elevated temperature are presented in this paper. Inspection results of hydrogen concentration obtained from an operating hydrogenation reactor are displayed.
关键词	hydrogen distribution hydrogen embrittlement hydrogen permeation hydrogenation reactor hydrogen sensor nondestructive test technique
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000176355600009
出版者	NATL ASSN CORROSION ENG
引用统计	被引频次：1[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/321006/111908
专题	中国科学院金属研究所
通讯作者	Yu, G
作者单位	1.Chinese Acad Sci, Inst Corros & Protect Met, State Key Lab Corros & Protect, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yu, G,Zhang, XY,Du, YL. Mobile hydrogen monitoring in the wall of hydrogenation reactors[J]. CORROSION,2001,57(1):71-77.
APA	Yu, G,Zhang, XY,&Du, YL.(2001).Mobile hydrogen monitoring in the wall of hydrogenation reactors.CORROSION,57(1),71-77.
MLA	Yu, G,et al."Mobile hydrogen monitoring in the wall of hydrogenation reactors".CORROSION 57.1(2001):71-77.