影响曼尼希碱型酸化缓蚀剂性能的因素  

Research on effect factors of performance of Mannich base corrosion inhibitor

作　　者：卢永周[1] 李海娟[2] 马智国[1] 宋吉锋 孟凡宁[2] 

机构地区：[1]陕西国防工业职业技术学院,陕西西安710302 [2]西安石油大学化学化工学院,陕西西安710065 [3]中海石油(中国)有限公司湛江分公司研究院,广东湛江524057

出　　处：《石化技术与应用》2014年第4期302-306,共5页Petrochemical Technology & Application

摘　　要：采用静态失重法研究了曼尼希碱型酸化缓蚀剂缓蚀性能的影响因素,采用扫描电子显微镜研究和分析了N 80钢片表面的腐蚀情况,还采用能谱法研究了N 80钢片腐蚀后组成的变化情况。结果表明,氯化钠、Fe3+质量浓度增大时腐蚀速率增大,缓蚀剂用量增大时腐蚀速率减小,盐酸含量增加时腐蚀速率增大,接触时间延长时腐蚀速率增大,温度降低时腐蚀速率减小;当缓蚀介质用量为500 mL,盐酸、缓蚀剂质量分数分别为15%,1.0%,90℃下处理4 h,N 80钢片的腐蚀速率为3.9887 g/(m2·h),可满足SY/T 5405—1996对酸化缓蚀剂一级品的质量要求。The effect factors of performance of Mannich base corrosion inhibitor were investigated by a static gravimetrie method, and the surface cor rosion and element composition change of N 80 steel sheet were analyzed and studied by scanning elec tron microscopy and X ray photoelectron spectros copy respectively. The results showed that the corro sion rate increased with the increase of the mass concentration of NaCl and Fe3＋ , content of hydro chloric acid and corrosion time. The corrosion rate decreased with the increase of corrosion inhibitor level and the decrease of corrosion time. When N 80 steel sheet was treated at 90 ℃ for 4 h under the con dition of corrosion inhibiting medium 500 mL, mass fraction of hydrochloric acid 15% and mass fraction

关 键 词：曼尼希碱型酸化缓蚀剂 缓蚀性能 静态失重法 扫描电子显微镜 能谱法 

分 类 号：TE39[石油与天然气工程—油气田开发工程]