Analysis on Backside Cracks in 316LMod Inner Linings of Urea Reactors

摘要：

　　Backside cracks were found universally in the ultra-low carbon austenitic stainless steel (316LMod) inner linings of urea reactors in recent years,and led to urea reactors leakage.Analyses on the sample revealed that,the backside cracks were caused by the interaction of wet hydrogen sulfide (H2S) and chloride ions (Cl-) stress corrosion cracking (SCC),and H2S played a dominant role.The source of H2S and chloride ions was the leak detection steam.Furthermore,measures to avoid backside cracks in 316LMod inner linings of urea reactors were put forward and verified.

关键词： stainless steel 316LMod backside cracks stress corrosion cracking (SCC) innerlining urea reactor

作者: Cao Huai-xiang Wang Chun-mao Qiu Xing-qi

作者单位: Shandong Special Equipment Inspection Institute, 939 Tianchen RD,Jinan,250101 ,PR China;College of C Shandong Special Equipment Inspection Institute, 939 Tianchen RD,Jinan,250101 ,PR China College of Chemical Engineering, China University of Petroleum, Qingdao,266555,PR China

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Mechanical Engineering and Materials Engineering (机械工程与材料工程国际会议())

会议地点: 香港

会议语种:英文

页码: 858-863

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）