What causes bubbling on the inner wall of the reactor vessel head?
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The equipment is a reactor made of 316L material; after one year of use, bubbling appeared on the lower head. The specific operating conditions were 260°C and a pressure of 1.0 MPa, with certain amounts of Cl ions present during the reaction process. See the photos for specific details
Could it be a material issue, caused by corrosion?
Logically, such problems should not occur with 316L material; the operating pressure is not high either. Use a material analyzer to check it.
The corrosion issue shouldn’t be like this; it’s probably a material problem
This phenomenon shouldn’t occur; it’s metal after all, not something else – how can bubbling happen? Also, is 316 used when there are chloride ions? ? ? Why? Chloride ions cause significant damage to 316 at high temperatures