咪唑/甲基丁炔醇复配缓蚀剂对油气输送管道的缓蚀性能研究  

Study on the corrosion inhibition performances of methylbutynol combined inhibitor to the oil and gas transmission pipeline

作　　者：强娟[1] 吴红梅 高晓明[1] 付峰[1] 高楼军[1] 

机构地区：[1]延安大学化学与化工学院陕西省化学反应工程重点实验室,陕西延安716000 [2]陕西延长石油(集团)有限责任公司永坪炼油厂,陕西延安716000

出　　处：《化工科技》2015年第1期18-22,共5页Science & Technology in Chemical Industry

基　　金：陕西省科技厅项目(2014K10-04);陕西省教育厅项目(2013JK0689);延安市科技局项目(2012kg-09)

摘　　要：以咪唑为主剂,甲基丁炔醇为辅剂,制备了不同种类的复配缓蚀剂,利用失重法和SEM手段分析了复配缓蚀剂对N80钢和A3钢的缓蚀效果。结果表明,制备的复配缓蚀剂对N80钢的缓蚀率可达到74%以上,对A3钢的缓蚀率都可达到87%以上。以质量分数0.8%咪唑和甲基丁炔醇的体积比为100∶10时复配的缓蚀剂缓蚀效果最明显,其对N80钢的缓蚀率为88%,而对A3钢的缓蚀率都可达到94%。SEM结果表明,添加了复配缓蚀剂后,N80钢和A3钢表面腐蚀得到了较好的抑制,裂纹明显降低。The different combined inhibitors were prepared with imidazole and methylbutynol,and the corrosion inhibition performances on N80 steel and A3 steel were analyzed by static coupon and SEM methods.The results showed that the corrosion inhibition rate for N80 steel and A3 steel could reach more than 74％ and 87％ respectively.The inhibitor consisted of 0.8％ and imidazole methylbutynol with the ratio of 100 ∶ 10 showed the best coorosion inhibition perfromances.The SEM results showed the surface corrosion of N80 steel and A3 steel has been well suppressed and the crack reduced significantly by adding the combined inhibitor.

关 键 词：CO2腐蚀 缓蚀剂 缓蚀性能 协同作用 

分 类 号：TG174.42[金属学及工艺—金属表面处理] TE988[金属学及工艺—金属学]