Ferrous sulfide has a very high auto-ignition temperature; then why does it catch fire during passivation?
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Ferrous sulfide has a very high auto-ignition temperature, so why does it catch fire during passivation?
How can passivation catch fire? Please explain the specific circumstances.
There’s again FeS on the bed layer; it’s peroxidized
It was probably due to an excess of peroxide during passivation; during that process, ferrous sulfide gets oxidized, and the heat generated causes it to catch fire on its own
It’s likely that the oil wasn’t cleaned properly during passivation, and the heat generated by ferrous sulfide caused the oil and gas to burn.
This material has a self-ignition point of around 50°C, but a very high melting point of 1194°C; it depends on the method used for passivation