Anti-corrosion treatment for the inner wall of coal tar storage tanks
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The current heating temperature of the coal tar storage tanks is 70–90°. It is now planned to use an inorganic silicate-zinc coating for anti-corrosion protection on the inner walls; let’s discuss the advantages and disadvantages of this approach. Is there a better solution?
This post was last edited by Tengteng Zhu on 2009-8-31 at 15:38. I didn’t read it carefully earlier; it’s coal tar! I said it wrong
If an inorganic zinc-rich coating is to be used, tests need to be conducted first. Firstly, inorganic zinc-rich materials can withstand temperatures up to 400 degrees, so temperature resistance is not an issue ； However, in inorganic zinc-rich coatings, above 70 degrees Celsius, and within a certain temperature range, a potential reversal issue occurs: compared to iron, at temperatures above 70 degrees Celsius, the potential of zinc becomes higher than that of iron, causing iron to corrode while protecting zinc. If you plan to use it, test it first.