常减压蒸馏装置腐蚀调查与防护分析  

Corrosion investigation and protection analysis of atmospheric and vacuum distillation units

作　　者：赵一国 ZHAO Yiguo(SINOPEC Qingdao Petrochemical Co.,Ltd.,Qingdao 266000,China)

机构地区：[1]中国石化青岛石油化工有限责任公司,山东青岛266000

出　　处：《石油化工腐蚀与防护》2024年第3期17-21,共5页Corrosion & Protection In Petrochemical Industry

摘　　要：腐蚀调查是了解石化装置腐蚀程度的重要手段,是企业掌握装置上周期腐蚀状况、快速提出改进措施、做好下周期防腐蚀工作的重要依据。通过采用外观检查、脉冲涡流检测和超声波测厚等方式,对某企业常减压蒸馏装置开展停工腐蚀调查,发现常压塔、减压塔、常顶回流罐和常压塔顶换热器壳程出口管道等部位存在的主要腐蚀问题,分析腐蚀原因及机理,提出维修措施及下一运行周期的腐蚀监检测建议,保障装置的安全稳定运行,并为下一次腐蚀调查工作提供参考和技术支撑。Corrosion investigation is a critical means to understand the degree of corrosion in petrochemical plant;moreover,it is an important basis to evaluate the corrosion status in the previous cycle,quickly propose improvement methods,and thus achieve good corrosion prevention results in the next cycle.Through the use of visual inspection,pulse eddy current testing,and ultrasonic thickness measurement,a shutdown corrosion exploration was conducted on the atmospheric and vacuum distillation unit.The main corrosion problems were found in the atmospheric tower,vacuum tower,atmospheric overhead reflux tank,and the shell side outlet pipeline of the atmospheric overhead heat exchanger.Then,the causes and mechanisms of corrosion were analyzed,and maintenance measures and suggestions for corrosion monitoring and testing in the next operating cycle were put forward to ensure the safe and stable operation of the device,as well as to provide reference and technical support for the next corrosion investigation work.

关 键 词：常减压装置 腐蚀调查 HCl-H_(2)S-H_(2)O腐蚀 工艺防腐 监检测 

分 类 号：TE986[石油与天然气工程—石油机械设备]