炼制海洋高酸原油常压炉管泄漏原因分析及应对措施  

Reasons for Leakage of Atmospheric Pressure Furnace Tube in Refining Marine High-acid Crude Oil and Its Countermeasures

作　　者：刘吉勇 葛玉龙 姜振平 LIU Jiyong;GE Yulong;JIANG Zhenping(Shandong Zibo Petroleum Branch, SINOPEC Sales Co., Ltd., Zibo 255434, China;CNOOC Dongfang Petrochemical Co. , Ltd. , Dongfang 572600, China;China Offshore Bitumen Co. , Ltd. , Binzhou 256600, China)

机构地区：[1]中石化销售有限公司山东淄博石油分公司,山东淄博255434 [2]中海油东方石化有限责任公司,海南东方572600 [3]中海油沥青股份有限公司,山东滨州256600

出　　处：《石油化工腐蚀与防护》2019年第3期61-64,共4页Corrosion & Protection In Petrochemical Industry

摘　　要：某公司常压蒸馏装置加工海洋高酸原油,其常压炉管出现腐蚀泄漏问题。检查炉管泄漏部位腐蚀形貌并对腐蚀原因进行了分析,结果表明:原油酸值高、腐蚀部位存在相变、加热炉超负荷、炉管材质不符合选材导则要求及原油中携带采油助剂等是炉管腐蚀泄漏的主要原因。采取炉管材质升级、按照规范焊接炉管、加强原油静置脱水、电脱盐罐定期清理、优化操作条件和稳定运行负荷等措施,抑制了炉管腐蚀。Corrosion leakage occurred in furnace tube of atmospheric distillation unit which processes marine high acid crude oil. Corrosion morphology of the leakage location was examined and analyzed, and the results showed that main causes were high acid value of crude oil, phase transformation in corrosion location, overload of heating furnace, unqualified tube material and oil additives carried in crude oil. Precautions were taken to restrain corrosion, such as upgrading tube material, welding tube according to specifications, strengthening static dehydration of crude oil, regular cleaning of electric desalting tank, optimizing operation conditions and stabilizing operation load. Since then, no leakage accident has happened again.

关 键 词：常压炉 炉管 环烷酸 冲刷腐蚀 采油助剂 

分 类 号：TE986[石油与天然气工程—石油机械设备]