常减压塔顶部回流泵叶轮腐蚀原因分析
Causes Analysis on Corrosion of a Reflux Pump Impeller on the Top of Atmospheric-vacuum Tower
摘 要
某炼油厂常减压塔C-102顶部回流管线上的回流泵出现异常，经拆卸检查，发现该泵叶轮已发生腐蚀损坏。为了明确该叶轮的失效原因，对其进行了宏观检验、化学成分分析、金相检验、微观检验、腐蚀产物分析及腐蚀介质的影响分析。结果表明：叶轮失效的根本原因是电化学腐蚀和湿硫化氢应力腐蚀，并根据原因提出了相应的建议和措施。
叶轮
电化学腐蚀
湿硫化氢应力腐蚀
措施
reflux pump
impeller
electrochemical corrosion
wet hydrogen sulfide stress corrosion
countermeasure
Abstract
The reflux pump in the reflux pipeline on the top of an atmospheric-vacuum tower C-102 was found abnormal. It was found that the pump impeller had been corroded and damaged after the disassembly inspection. To find out the failure causes of the impeller, the impeller was analyzed by macroscopic inspection, chemical composition analysis, metallography inspection, microscopic inspection, corrosion product analysis and the corrosive medium influence analysis. The results show that the root causes of the impeller failure were electrochemical corrosion and wet hydrogen sulfide stress corrosion. The corresponding suggestions and the countermeasures were put forward according to the reasons.
中图分类号 TG115.2 TE986 DOI 10.11973/lhjy-wl201605014
所属栏目 质量控制与失效分析
基金项目
收稿日期 2015/5/29
修改稿日期
网络出版日期
作者单位点击查看
备注张培俊（1967-），女，高级工程师，学士。
引用该论文: ZHANG Pei-jun,SUN Quan-sheng. Causes Analysis on Corrosion of a Reflux Pump Impeller on the Top of Atmospheric-vacuum Tower[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2016, 52(5): 345～349
张培俊,孙全胜. 常减压塔顶部回流泵叶轮腐蚀原因分析[J]. 理化检验－物理分册, 2016, 52(5): 345～349
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参考文献
【1】韩巍,孙文君,袁军,等.炼油常减压装置常顶系统腐蚀分析及防护[J].全面腐蚀控制,2011,25(6): 22-28.
【2】李明,李晓刚,陈华.在湿H2S环境中金属金属腐蚀行为和机理研究概述[J].腐蚀科学与防护技术,2005,17(2): 107-111.
【3】赵敏,康强利,赵恒庆,等.芳烃抽提系统叶轮的失效分析[J].腐蚀与防护,2007,28(4): 214-216.
【2】李明,李晓刚,陈华.在湿H2S环境中金属金属腐蚀行为和机理研究概述[J].腐蚀科学与防护技术,2005,17(2): 107-111.
【3】赵敏,康强利,赵恒庆,等.芳烃抽提系统叶轮的失效分析[J].腐蚀与防护,2007,28(4): 214-216.
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