【摘要】 随着原油劣质化、重质化的趋势加重，加氢装置原料油中的Cl, N,S等腐蚀性元素的含量不断增加，导致加氢装置发生腐蚀失效的案例频增。基于对以往加氢系统腐蚀失效案例的分析，讨论了装置上的腐蚀部位及其腐蚀机理，并采用基于风险的检验技术制定了不同操作条件下的设备风险等级。进而，以某工厂蜡油加氢系统为研究对象，对易发生铵盐（NH₄Cl、NH₄HS）腐蚀的设备及管线进行腐蚀回路划分与风险评估。最后，针对系统中不同腐蚀回路的各项指标参数，均进行了理想控制范围的设定，从而抑制或减缓铵盐腐蚀的发生。更多还原

【Abstract】 In recent years, with the crude oil processed by domestic refineries has gradually deteriorated, and the content of corrosive elements such as Cl, N and S in the feedstocks used in the hydrogenation system has gradually increased, which has led to an increase in the number of corrosion failures caused by ammonium salts in hydrogenation units. Based on the historical failure cases of hydrogenation systems, the corrosion locations and corrosion mechanisms, and formulates the risk level of the equipment under different operating conditions were summarized using risk-based inspection（RBI） technology. Then, the gas oil hydrogenation system of a factory was taken as the research object, and the corrosion circuit division and risk assessment of the equipment and pipelines prone to ammonium salt（NH₄Cl, NH₄HS） corrosion were carried out. At the same time, ideal control ranges are set for various indicators of different corrosion unit circuits in the system to control or slow down the occurrence of ammonium salt corrosion.更多还原