Remediation of hydrochloric acid corrosion in 316L tanks
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It’s a 316L tank; some material containing hydrochloric acid was accidentally brought in from upstream. Upon internal inspection, corrosion was detected (see the image below). The corrosion will still be there even after cleaning – is there nothing to do but wait for it to worsen over time? Is there any good way? Thank you!
Hydrochloric acid will corrode 316 material; replace it
I can’t see the image. What media is normally stored in 316L tanks? What is the operating temperature? Why not give coating a try to solve it!
Check the corrosion data for 316L and determine the appropriate approach based on the operating conditions of the tank
Check the corrosion data for 316L and determine the appropriate approach based on the operating conditions of the tank
The operating temperature is 350 degrees; there is no corrosion during normal operation, but hydrochloric acid is generated during shutdown and cleaning. It cannot be solved through process adjustments either, so the tank has to be opened for inspection every time it is shut down.
It can be understood that the normal operating temperature is 350 degrees. The temperature is too high. Polymer coatings cannot solve this problem. :(