加氢装置塔顶缓蚀剂的评价  

Evaluation of Corrosion Inhibitor for Overhead of Hydrogenation Unit

作　　者：高楠 郑丽群[1] 韩英杰[2] 杨富淋 马光 

机构地区：[1]沈阳中科韦尔腐蚀控制技术有限公司,辽宁沈阳110180 [2]中国石油抚顺石化公司,辽宁抚顺113004

出　　处：《石油化工腐蚀与防护》2015年第1期27-30,共4页Corrosion & Protection In Petrochemical Industry

摘　　要：针对某炼化企业加氢装置多处发生腐蚀问题,为了确保塔顶缓蚀剂的注入效果,对几种日常注入的6种缓蚀剂进行评价筛选。通过实验室模拟腐蚀环境,采用电化学极化曲线法测定不同种类的缓蚀剂在腐蚀介质溶液中的腐蚀电流密度,通过塔菲尔斜率推算出缓蚀率,从而评价缓蚀剂注入效果。缓蚀剂的缓蚀率排序:多硫化钠复合剂(81.62%)>2号缓蚀剂(81.57%)>1号缓蚀剂(53.02%)>1:1缓蚀剂(21.92%)>D3201缓蚀剂(13.73%)>1:6.5缓蚀剂(-83.28%)。6 different inhibitors were evaluated and screened to ensure the effects of corrosion inhibition at the tower overhead and solve the corrosion problems in a large number of locations of a hydrogenation unit. Corrosive environment was simulated in laboratory, the corrosion current density of different corrosion inhibitors in corrosive media was measL, red by electro - chemical polarization curves, and corrosion inhibition rate was calculated with Tafel slope so as to evaluate the effect or corrosion inhibitor injection. The corrosion inhibitors＇ performances are as follows： polysulfide （81.62c/c） 〉 2# pure agent （81.57%） 〉 1# pure agent （53.02%） 〉 1：1 inhibitor （21.92%） 〉 D3201inhibitor （13.73%） 〉 1：6.5 inhibitor （-83.28%）.

关 键 词：缓蚀剂 腐蚀 极化 

分 类 号：TE986[石油与天然气工程—石油机械设备] TG174.42[金属学及工艺—金属表面处理]