雅克拉集气处理站换热器管束腐蚀穿孔原因分析

Cause Analysis on Corrosion Perforation of Heat Exchanger Tube Bundle at Yakela Gas Gathering Station

雅克拉集气处理站有换热器15台,其中二级凝析油换热器已连续运行多年,其管束腐蚀穿孔严重。腐蚀穿孔不仅影响了凝析油的稳定效果,降低了凝析油中的轻组分拔出率,而且给生产带来安全隐患。通过对换热器结构特点、腐蚀形貌、服役环境和腐蚀因素进行分析,找出腐蚀穿孔原因,并结合实际情况提出了相关防护建议。

There are 15 sets of heat exchangers in Yakela gas gathering station, of which the level 11 condensate oil heat exchanger has been running for many years, however, its tube bundle was corroded seriously, which not only affected the stability of condensate oil, but also reduced the extraction rate of light components. Causes were found out by analyzing structural characteristics, corrosion morphology, service environment and corrosion factors of heat exchanger, and relevant preventions and proposals were suggested.