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Corrosion In Overhead Neutralizer Injection Line Of Crude Distillation

corrosion crude distillation column neutralizer

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#1 kaushik avs

kaushik avs

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Posted 19 April 2016 - 04:33 AM

In one of our CDU’s recently we had a leak on the joint between the ¾” overhead neutralizer injection line and 24” overhead vapor line of atmos column. Internal corrosion was observed on the leak area. The pipes thickness was measured at different parts around the leak area and found to be OK. It indicates localized corrosion. We are using neutralizing amine as neutralizer. We are unable to find the root cause of the failure. Are there any instances like this in other refineries? If so, what might be the probable reasons?

#2 fallah

fallah

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Posted 19 April 2016 - 05:16 AM

kaushik avs,

 

It might the root cause of the failure relates to the joint weld quality rather than the pipes thickness...then it's worth checking the weld quality...






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