气相缓蚀剂在原油储罐气相区的防腐蚀性能
Anti-corrosion Performance of Volatile Corrosion Inhibitor in Gas Phase of Crude Oil Storage Tank
摘 要
气相区中的CO2、O2和H2S易对罐顶造成严重的腐蚀。采用超声波雾化的方法将缓蚀剂加注到储罐内，研究了喷雾浓度和喷雾时间间隔对气相区腐蚀的影响。结果表明：通过喷雾形式添加亚硝酸二环乙胺能够起到良好的防腐蚀效果，最优的喷雾缓蚀剂加入量为200 mg/L，喷雾时间间隔为24 h，此时腐蚀速率远低于0.076 mm/a，缓蚀率达到92.71%。
气相缓蚀剂
失重试验
超声波雾化技术
缓蚀率
gas phase corrosion
volatile corrosion inhibitor
weightlessness test
ultrasonic atomization technology
corrosion inhibition efficiency
Abstract
Serious corrosion occurring at tank roof is usually caused by CO2, O2 and H2S in the gas phase of crude oil storage tank. Volatile corrosion inhibitor was injected into the storage tank by ultrasonic atomization. The effects of spray concentration and spraying time interval on the corrosion in gas phase were studied. The results showed that the addition of nitric acid dicyclohexylamine by spraying could play a good anti-corrosion effect. For a comprehensive economic and anti-corrosive effect, the optimal concentration of spray inhibitor was 200 mg/L, spray time interval was 24 h, the corrosion rate was much lower than 0.076 mm/a, the corrosion inhibition efficiency reacheed 92.71%.
中图分类号 TG174 DOI 10.11973/fsyfh-201803005
所属栏目 试验研究
基金项目
收稿日期 2017/10/16
修改稿日期
网络出版日期
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引用该论文: LI Weiyu,WANG Hongbo,LI Mingzhe,JIA Yuandong,CHENG Meng,HU Songqing. Anti-corrosion Performance of Volatile Corrosion Inhibitor in Gas Phase of Crude Oil Storage Tank[J]. Corrosion & Protection, 2018, 39(3): 189
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参考文献
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【7】SUN S,GENG Y,TIAN L,et al. Density functional theory study of imidazole,benzimidazole and 2-mercaptobenzimidazole adsorption onto clean Cu(111) surface[J]. Corrosion Science,2012,63(5):140-147.
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【9】邢波,檀秀萍. 压气站YH-901气相缓蚀剂的研制与应用[J]. 油气储运,2004,23(12):44-46.
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【12】ZHAO J,DUAN H,JIANG R. Synergistic corrosion inhibition effect of quinoline quaternary ammonium salt and Gemini surfactant in H2S and CO2 saturated brine solution[J]. Corrosion Science,2015,91:108-119.
【13】余进. 气体检测管的原理及使用[J]. 中国煤炭,1999,25(10):31-33.
【14】赵寿堂,杨冬萍,王栋. 气体检测管法的研究[J]. 安全,1995(4):1-4.
【15】李官贤,吴佛运. 低浓度气体检测管及其采样装置的研究[J]. 解放军预防医学杂志,1998(3):183-187.
【16】李祯,孙阳超,郭蒙蒙,等. N80、45#、20#钢在京11区块注入水中的腐蚀规律[J]. 表面技术,2016(11):99-105.
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