What is a suitable coating or a MOC that can stand HF at 100 degrees C?
Q: We are using a reaction vessel that is constructed of SS316ti and this operated at a temperature range of around 90 – 100 degrees C. Corrosive materials like HF and chromic acid are used in the manufacture of the product. In August, the vessel thickness reduced by 1 mm, for which HF was assumed to be the main culprit. A decision was made to provide a coating so that the vessel operation can be resumed as soon as possible. A probable alternative, though not preferred, was to replace the vessel entirely with a vessel having a material of construction (MOC) that can tolerate HF, of which there is very little information available to us. So please suggest a suitable coating or a MOC that can stand HF at 100 deg C. A: It is very difficult to give a specific MOC recommendation without knowing many additional details about your process. The composition, concentrations, and temperatures are all important from a corrosion resistance perspective. Even low levels of some chemical species can s
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