常减压装置塔顶管道腐蚀原因解析

针对目前原油品质日趋劣化,造成常减压装置塔顶管线腐蚀日益严重,经过腐蚀调查并分析腐蚀原因后,阐述了腐蚀的环境和机理,解决常减压蒸馏装置管线低温部位防腐的合理措施,提出了加强工艺调整PH值的控制,并合理的减缓腐蚀-加强对缓蚀剂和剂量控制,降低腐蚀所造成的风险。

Cause Analysis of Corrosion of the Pipes on the Top of Atmospheric and Vacuum Distillation Unit

The corrosion of the pipes on the top of atmospheric and vacuum distillation unit becomes increasingly severe because of crude oil quality deteriorating.In this paper,the corrosion situation was investigated and corrosion causes were analyzed,the environment and mechanism of corrosion were introduced,the reasonable measures to solve the corrosion problems of low-temperature pipes in AC/VDU were put forward.It's pointed out that the process adjustment of PH value should be strengthened,proper anti-corrosion agents should be used,in order to reduce the risk caused by the corrosion.