第 39 卷第 4 期Vol. 39 No. 4
2009 年 8 月Aug 2009

所属栏目:功能材料

新型咪唑啉缓蚀剂的合成及其缓蚀性能研究
刘忠运1,李莉娜2,张大椿1,吴大伟1 (1.长江大学 油气钻采工程湖北省重点实验室,湖北 荆州 434023;2.天津理工大学 化学化工学院,天津 300384)
摘 要:合成了一种复合缓蚀剂 YHX-4,研究了其在二氧化碳/硫化氢共存条件下的缓蚀性能。研究表明,在n(油酸) ∶ n(二乙烯三胺) ∶ n(硫脲) ∶ n(氯化苄)=1 ∶ 1.4 ∶ 1 ∶ 1.2、成环反应最高温度220℃、成环时间8 h;季铵化反应温度90℃、时间3 h条件下可合成咪唑啉季铵盐缓蚀剂YHX-3,目标产物经红外表征。将YHX-3与自制的4种物质:炔氧甲基烷基苄基季铵盐(HPOMAQ)、丁炔二醇(BOZ)、磷酸三乙酯(TEP)、增效剂SA进行复配[m(YHX-3) ∶ m(BOZ) ∶ m(HPOMAQ) ∶ m(TEP) ∶ m(SA)=30 ∶ 8 ∶ 8 ∶ 3 ∶ 1]得缓蚀剂YHX-4,其在二氧化碳/硫化氢共存的腐蚀介质中静态缓蚀率大于92%,动态缓腐蚀率大于88%。
关键词:咪唑啉季铵盐;缓蚀剂;缓蚀率;合成
中图分类号:TG174.42  文献标识码:A  文章编号:1009-9212(2009)04- 0039-05
Research on the Synthesis and Anti-corrosive Performance of Novel Imidazoline Corrosion Inhibitors
LIU Zhong-yun1,LI Li-na2,ZHANG Da-chun1,WU Da-wei1 (1. Key Laboratory of Oil and Gas Drilling and Production Engineering,Yangtze University,Jinzhou 434023,China;2. Chemistry and Chemical Engineering College,Tianjin University of Technology,Tianjin 300384,China)
Abstract:Compound YHX-4 was prepared and its corrosion inhibition properties were studied under the CO2/H2S coexistence conditions. Results indicated that the optimum conditions for synthesizing imidazoline quaternary-ammonium-salts corrosion inhibitor(YHX-3)were:n(oleic acid) ∶ n(diethylenetriamine) ∶ n (thiourea) ∶ n(benzyl chloride)= 1 ∶ 1.4 ∶ 1 ∶ 1.2,the cyclization reaction lasted for 8 h at the highest temperature of 220 ℃,and then quaternized for 3 h at 90 ℃. The structure of the product was proved with infrared spectrum. Corrosion inhibitor YHX-4 was then composed of YHX-3 and other four self-made substances including HPOMAQ,BOZ,TEP and SA[m(YHX-3) ∶ m(BOZ) ∶ m(HPOMAQ) ∶ m( TEP) ∶ m(SA)=30 ∶ 8 ∶ 8 ∶ 3 ∶ 1]. The efficiencies of its static and dynamic corrosion inhibition in the CO2/H2S medium were more than 92% and 88%, respectively.
Key words:imidazoline quaternary-ammonium-salt;corrosion inhibitor;corrosion efficiency;synthesis
作者简介:刘忠运(1984-),男,湖北荆州人,硕士研究生,主要从事油田化学方面的研究工作。(E-mail:liuzhongyun2006@163.com)
收稿日期: 2009-06-2