| 蜡油催化裂化装置烟气放空管失效分析 |
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| 引用本文： | 黄顺德. 蜡油催化裂化装置烟气放空管失效分析[J]. 石油化工腐蚀与防护, 2011, 28(4): 56-60 |
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| 作者姓名： | 黄顺德 |
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| 作者单位： | 中国石化股份有限公司广州分公司,广东广州,510726 |
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| 摘 要： | 通过对蜡油催化裂化装置三旋至烟机放空管腐蚀失效原因分析,指出由于生成连多硫酸,造成管内壁出现晶间腐蚀,继而在应力作用下发生应力腐蚀开裂,从而形成自内壁向外壁扩展的裂纹,导致其失效。
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| 关 键 词： | 催化裂化装置 烟气 放空管 失效分析 |
Analysis of Flue Gas Vent Failure of VGO FCC Unit |
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| Huang Shunde SINOPEC Guangzhou Petrochemical Company. Analysis of Flue Gas Vent Failure of VGO FCC Unit[J]. Petrochemical Corrosion and Protection, 2011, 28(4): 56-60 |
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| Authors: | Huang Shunde SINOPEC Guangzhou Petrochemical Company |
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| Affiliation: | Huang Shunde SINOPEC Guangzhou Petrochemical Company(Guangzhou,Guangdong 510726) |
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| Abstract: | The analysis of causes of failure of flue gas vent tube from 3rd-stage cyclone separator to flue gas expander in VGO FCC unit concluded that vent failure was the result of cracking propagated from the internal wall to the external wall under the effect of stress corrosion cracking attributed to intergranular corrosion caused by polythionic acid. |
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| Keywords: | FCC unit flue gas vent pipe failure analysis |
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