HCl-H_(2)S-H_(2)O体系缓蚀剂的合成及应用性能  

Synthesis and performance evaluation of corrosion inhibitor for HCl-H_(2)S-H_(2)O

作　　者：任海晶[1,2] 吴英强 王晓晖 杨志刚[4] 李移乐 REN Hai-jing;WU Ying-qiang;WANG Xiao-hui;YANG Zhi-gang;LI Yi-le(Shaanxi Research Design Institute of Petroleum and Chemical Industry,Xi’an 710054,China;Key Laboratory of Fine Chemicals Petroleum Shaanxi Province,Xi’an 710054,China;Research Institute of Shannxi Yanchang Petroleum (Group)Co.,Ltd.,Xi’an 710065,China;Department of Oilfield Development,Changqing Oilfield Company,PetroChina,Xi’an 710021,China)

机构地区：[1]陕西省石油化工研究设计院,陕西西安710054 [2]陕西省石油精细化学品重点实验室,陕西西安710054 [3]陕西延长石油(集团)有限责任公司研究院,陕西西安710065 [4]中国石油长庆油田公司油田开发事业部,陕西西安710021

出　　处：《应用化工》2021年第5期1236-1238,共3页Applied Chemical Industry

基　　金：国家科技重大专项(2017ZX05039);陕西省科技攻关项目(2013K11-06);陕西省科技统筹创新工程项目(2016KTZDGY09-09);延长石油集团项目(ycsy2020kyA-06)。

摘　　要：以对苯二胺、甲醛、膦酸丁酯合成含氮有机膦缓蚀剂,研究该缓蚀剂对A3钢片缓蚀效果。结果表明,最佳反应条件为:n(胺)∶n(醛)∶n(酯)=1∶4∶2,反应温度50℃,反应时间3 h。该缓蚀剂加量≥30 mg/L时,在pH 6~8的HCl-H_(2)S-H_(2)O体系加热回流状态下,腐蚀速率低于0.715 g/(m^(2)·h),降低了HCl-H_(2)S-H_(2)O盐水体系对钢铁腐蚀,SEM分析表明,缓蚀剂分子在钢铁表面形成致密保护膜。Based on the molecular straucture of corrosion inhibitor of HCl-H_(2)S-H_(2)O,the product with a good performance is synthesized by selecting p-phenylenediamine,formaldehyde and phosphonic acid butyl ester.Influence of the corrosion inhibitor on A3 steel corrosion was investigated.The results show that the corrosion inhibitor possesses a good salt resistant and anti temperature capability with stable performance and evident result by adding a small amount of it,the condition was:n(amine)∶n(aldehyde)∶n(ester)=1∶4∶2,the reaction temperature was 50℃,the reaction time was 3 h.The corrosion rate low than 0.715 g/(m^(2)·h)can be controlled when pH value is 6~8,added amount 30 mg/L.So it has excellent ability to effectively prevent corrosion.

关 键 词：缓蚀剂 合成 炼油厂 

分 类 号：TQ203.9[化学工程—有机化工]