盐穴储气库卤水介质对A3钢腐蚀规律研究及防护分析  

Corrosion Law Study and Protection Analysis of A3 Steel by Brine Medium in Salt Cave Gas Storage

作　　者：顾华军 卜明哲 付现桥 刘瑞凯 周晓光 李晔 陈紫苑 李子茂 朱加祥 GU Huajun;BU Mingzhe;FU Xianqiao;LIU Ruikai;ZHOU Xiaoguang;LI Ye;CHEN Ziyuan;LI Zimao;ZHU Jiaxiang(China Petroleum Engineering&Construction Corporation,Beijing 100120,China;School of Materials Science and Engineering,China Unwersity of Petroleum(East China),Qingdao 266580,Shandong,China;Pipe China Engineering Technology Innovation Co.,Ltd.,Ticmjin 300450,China;North China Branch of Petro China Engineering Construction Corporation,Renqiu 062550,Hebei,China;Jining Special Equipment Inspection Institute,Jining 272000,Shandong,China)

机构地区：[1]中国石油工程建设有限公司,北京100120 [2]中国石油大学(华东)材料科学与工程学院,山东青岛266580 [3]国家管网集团工程技术创新有限公司,天津300450 [4]中国石油工程建设有限公司华北分公司,河北任丘062550 [5]济宁市特种设备检验研究院,山东济宁272000

出　　处：《焊管》2022年第10期12-17,共6页Welded Pipe and Tube

基　　金：中国石油工程建设有限公司科技基金项目“储气库完整性分析研究”(项目编号CPECC2018KJ06285);中国石油工程建设有限公司科技基金项目“盐穴储气库再识别分析研究”(项目编号CPECC2019KJ09)。

摘　　要：为了解决地下盐穴储气库注采管线与造腔管线合并带来的造腔期的卤水腐蚀问题,采用水腐蚀性测试方法,研究了地下盐穴储气库卤水管道工况和介质对管道腐蚀的影响规律。研究结果表明,温度、卤水浓度、溶解氧含量、流速均会加剧卤水对A3钢的腐蚀,结合卤水管道应用工况,建议选用双金属复合钢管,既能起到优良的耐蚀防护作用,又能在一定程度上降低成本,对实际工业生产具有较高的经济价值。In order to solve the problem of brine corrosion in the cavity period caused by the merger of the underground salt cave gas storage pipeline and the cavity pipeline,the test method for corrosivity of water was used to study the effect of working condition and medium on corrosion of brine pipeline in underground salt cavern gas storage.The results show that temperature,brine concentration,dissolved oxygen content and flow rate will aggravate the corrosion of A3 steel by brine.Combined with the application conditions of brine pipeline,it is suggested to choose bimetallic composite steel pipe,which can not only play a good role in corrosion protection but also reduce the cost to a certain extent,and has high economic value for practical industrial production.

关 键 词：地下储气库 卤水管道 A3钢 耐蚀性 腐蚀速率 

分 类 号：TG172[金属学及工艺—金属表面处理]