靖边气田汽水分离器腐蚀机理与防护技术研究  

Research on the corrosion mechanism and protection technology of Jingbian gas field steam-water separator

作　　者：李珍[1] 黄亚飞 胡静[1] 杨鸿鹰 廖昌建[3] 

机构地区：[1]陕西省石油化工研究设计院,陕西西安710054 [2]陕西延长石油集团炼化公司,陕西延安727406 [3]西北大学化工系,陕西西安710069

出　　处：《应用化工》2009年第10期1545-1548,共4页Applied Chemical Industry

摘　　要：靖边气田中分离器污水水质分析和垢样检测表明,其腐蚀主要由CO2-H2O(Cl-)-H2S系统作用引起的电化学腐蚀及SRB微生物腐蚀。采用Φ819 mm×60 mm×30 mm×51 mm的镯式铝牺牲阳极和45 mg/L氮氚杀菌剂联合防护,腐速由1.673 mm/a降到0.097 mm/a,符合国家标准<0.125 mm/a的要求。现场应用表明,运行1年后,再检时未发现明显腐蚀现象,防护效果良好。Waste water quality and scale sample analysis of separator in Jingbian gas field showed that corrosion was caused mainly by CO2-H20（Cl-）-H2S electrochemical corrosion and SRB microbiological corrosion. The rate of corrosion could be down from 1. 673 mm/a to 0.097 mm/a by using Φ819 mm × 60 mm× 30 mm× 51 mm size of bracelet-style aluminum sacrificial anode and 45 mg/L nitrogen tritium method. The corrosion rate would meet the national standard which is less than 0. 125 mm/a. After one- year-usage at the plant ,obvious corrosion was not discovered and corrosion protection was effective.

关 键 词：天然气 汽水分离器 腐蚀 防护 

分 类 号：TG172.3[金属学及工艺—金属表面处理]