Failure analysis of corrosion cracking and simulated testing for a fluid catalytic cracking unit

IMR OpenIR

	Failure analysis of corrosion cracking and simulated testing for a fluid catalytic cracking unit; Failure analysis of corrosion cracking and simulated testing for a fluid catalytic cracking unit
	H. Chen; X. G. Li; C. F. Dong; M. Li; J. W. Yang
	2005 ; 2005
发表期刊	Journal of University of Science and Technology Beijing ; Journal of University of Science and Technology Beijing
ISSN	1005-8850 ; 1005-8850
卷号	12 期号:2 页码:172-177
摘要	The failure of a fluid catalysis and cracking unit (FCCU) in a Chinese refinery was investigated by using nondestructive detection methods, fracture surface examination, hardness measurement, chemical composition and corrosion products analysis. The results showed that the failure was caused by the dew point nitrate stress corrosion cracking. For a long operation period, the wall temperature of the regenerator in the FCCU was below the fume dew point. As a result, an acid fume NOx-SOx-H2O medium presented on the surface, resulting in stress corrosion cracking of the component with high residual stress. In order to confirm the relative conclusion, simulated testing was conducted in laboratory, and the results showed similar cracking characteristics. Finally, some suggestions have been made to prevent the stress corrosion cracking of an FCCU from re-occurring in the future.; The failure of a fluid catalysis and cracking unit (FCCU) in a Chinese refinery was investigated by using nondestructive detection methods, fracture surface examination, hardness measurement, chemical composition and corrosion products analysis. The results showed that the failure was caused by the dew point nitrate stress corrosion cracking. For a long operation period, the wall temperature of the regenerator in the FCCU was below the fume dew point. As a result, an acid fume NOx-SOx-H2O medium presented on the surface, resulting in stress corrosion cracking of the component with high residual stress. In order to confirm the relative conclusion, simulated testing was conducted in laboratory, and the results showed similar cracking characteristics. Finally, some suggestions have been made to prevent the stress corrosion cracking of an FCCU from re-occurring in the future.
部门归属	univ sci & technol beijing, sch mat sci & engn, beijing 100083, peoples r china. chinese acad sci, inst met res, state key lab corros & prot, shenyang 110016, peoples r china. jiujiang branch corp, sinopec, jiujiang 332000, peoples r china.;li, xg (reprint author), univ sci & technol beijing, sch mat sci & engn, beijing 100083, peoples r china;lixiaogang99@263.net ; univ sci & technol beijing, sch mat sci & engn, beijing 100083, peoples r china. chinese acad sci, inst met res, state key lab corros & prot, shenyang 110016, peoples r china. jiujiang branch corp, sinopec, jiujiang 332000, peoples r china.;li, xg (reprint author), univ sci & technol beijing, sch mat sci & engn, beijing 100083, peoples r china;lixiaogang99@263.net
关键词	Stress Corrosion Cracking Stress Corrosion Cracking Fluid Catalytic Cracking Unit Fluid Catalytic Cracking Unit Dew Point Dew Point Failure Failure
URL	查看原文 ; 查看原文
WOS记录号	WOS:000228698500015 ; WOS:000228698500015
引用统计	被引频次：2[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/321006/34807
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Chen,X. G. Li,C. F. Dong,et al. Failure analysis of corrosion cracking and simulated testing for a fluid catalytic cracking unit, Failure analysis of corrosion cracking and simulated testing for a fluid catalytic cracking unit[J]. Journal of University of Science and Technology Beijing, Journal of University of Science and Technology Beijing,2005, 2005,12, 12(2):172-177, 172-177.
APA	H. Chen,X. G. Li,C. F. Dong,M. Li,&J. W. Yang.(2005).Failure analysis of corrosion cracking and simulated testing for a fluid catalytic cracking unit.Journal of University of Science and Technology Beijing,12(2),172-177.
MLA	H. Chen,et al."Failure analysis of corrosion cracking and simulated testing for a fluid catalytic cracking unit".Journal of University of Science and Technology Beijing 12.2(2005):172-177.