炭黑水处理单元顶部闪蒸汽管线开裂的原因
Cracking Causes of Flashed Vapor Pipeline on the Top of Carbon Black and Water Treatment Unit
摘 要
从材料的成分、腐蚀环境和应力分布三个方面对炭黑水处理单元顶部闪蒸汽管线开裂的原因进行了研究。结果表明: 开裂的性质为应力腐蚀开裂; Cl-和H2S等的交互作用, 不适当的管线加工、焊接和安装造成的较大拉应力构成了应力腐蚀开裂的基本条件。
蒸汽管线
应力腐蚀开裂
austenite stainless steel
vapor pipeline
stress corrosion cracking
Abstract
The cracking causes of flashed vapor pipeline on the top of carbon black and water treatment unit were studied from 3 aspect: material composition, corrosion environment and stress distribution. The results show that the cracking characteristic was strain corrosion, interaction between Cl- and H2S, unsuitable pipeline manufacture, and large tensile stress caused by welding and installation consisted of the basic conditions of stress corrosion cracking.
中图分类号 TH117.3
所属栏目 失效分析
基金项目 中石油吉林石化公司产学研合作项目(2011220200000024)
收稿日期 2011/2/16
修改稿日期 2011/10/13
网络出版日期
作者单位点击查看
备注金光熙(1964-), 男, 朝鲜族, 吉林吉林人, 教授, 博士。
引用该论文: JIN Guang-xi,YU Dong-lin,LI Wan-hai,GUO Chun-liang. Cracking Causes of Flashed Vapor Pipeline on the Top of Carbon Black and Water Treatment Unit[J]. Materials for mechancial engineering, 2012, 36(2): 100～103
金光熙,于东林,李万海,郭纯亮. 炭黑水处理单元顶部闪蒸汽管线开裂的原因[J]. 机械工程材料, 2012, 36(2): 100～103
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【3】高辉, 朱建华, 陈素霞.原油脱金属剂对不同钢材的腐蚀性评价[J].石油化工腐蚀与防护, 2006, 23(3):15-18.
【4】金亚奎, 刘楠, 关延军, 等.合成气装置脱硫设备损伤分析及治理[J].压力容器, 2009, 26(6):28-33.
【5】任爱, 赵灿, 范长信, 等.电站高温锅炉管奥氏体异种钢焊接接头失效方式研究[J].热力发电, 2003(8):27-31.
【6】黄毓晖, 轩福贞, 涂善东.304奥氏体不锈钢在酸性氯离子溶液中应力腐蚀性能的研究[J].压力容器, 2009, 26(7):5-10.
【7】GUAN Kai-shu, ZHANG Xing-hua, GU Xue-dong. Failure of 304 stainless bellows expansion joint [J].Engineering Failure Analysis, 2005, 12(3):387-399.
【8】ROKURO N, OSAMA M A. A new aspect on intergranular hydrogen embrittlement mechanism of solution annealed types 304, 316 and 310 austenitic stainless steels [J].Corrosion Science, 2009, 51(9):1894-1900.
【9】ROYCHOWDHURY S, KAIN V, GUPTA M. IGSCC crack growth in simulated BWR environment-Effect of nitrogen content in non-sensitized and warm rolled austenitic stainless-steel [J].Corrosion Science, 2011, 53(3):1120-1129.
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