| 乙烯裂解炉辐射段炉管鼓包开裂失效分析 |
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| 引用本文： | 刘海波,王君,沈源,徐烨璘,姜浩晖. 乙烯裂解炉辐射段炉管鼓包开裂失效分析[J]. 石油化工腐蚀与防护, 2021, 0(2): 57-60 |
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| 作者姓名： | 刘海波 王君 沈源 徐烨璘 姜浩晖 |
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| 作者单位： | 浙江国检检测技术股份有限公司;海盐县三地自来水有限公司 |
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| 摘 要： | 某乙烯裂解炉辐射段炉管,材质为ZGCr25 Ni35 Nb,在服役6个月后发生局部鼓包并泄漏.通过宏观形貌分析、扫描电镜分析、金相组织检测、硬度检测和化学分析等手段对炉管失效原因进行了分析,结果表明:失效部位壁厚明显减薄,剩余壁厚只有完整壁厚的1/3;电镜观察可见明显的晶间疏松及显微孔洞;金相分析可见明显的渗碳和蠕变现...
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| 关 键 词： | 裂解炉辐射段炉管 鼓包 腐蚀失效 渗碳 蠕变 |
Failure Analysis of Bulging and Cracking in Radiant Section Tube of Ethylene Cracker |
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| LIU Haibo,WANG Jun,SHEN Yuan,XU Yelin,JIANG Haohui. Failure Analysis of Bulging and Cracking in Radiant Section Tube of Ethylene Cracker[J]. Petrochemical Corrosion and Protection, 2021, 0(2): 57-60 |
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| Authors: | LIU Haibo WANG Jun SHEN Yuan XU Yelin JIANG Haohui |
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| Affiliation: | (Zhejiang Guojian Testing Technology Co.,Ltd.,Haiyan 314300,China;Haiyan Sandi Water Co.,Ltd.,Haiyan 314300,China) |
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| Abstract: | The radiant section tube(made of ZGCr25Ni35Nb)of an ethylene cracker was partially bulged and leaked after six months of operation.Failures were studied by means of macro morphology analysis,scanning electron microscope analysis,metallographic structure test,hardness test and chemical composition analysis.The findings showed that the remaining wall thickness of disabled part is only 1/3 of the total;apparent intergranular porosity and microporosity can be observed by electron microscope;carburization and creep deformation can be seen by metallographic analysis.It was concluded that the failure mode of tube is localized corrosion,which leads to corrosion thinning and creep deformation. |
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| Keywords: | cracker radiant section tube bulge corrosion failure carburization creep deformation |
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