Conditions for spontaneous combustion of ferrous sulfide
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Is ferrous sulfide naturally igniting faster when it enters the air under a high pressure of 1.0MP than when it enters the air under normal pressure? How fast or slow is it?
It will be faster. The higher the pressure, the greater the oxygen concentration, and the easier it is for oxidation reaction to cause spontaneous combustion. As for how much faster, I don’t know.~
FeS dark brown or black crystals. In block, strip or powder form. Density 4.74. Melting point 1193℃. Insoluble in water, it produces hydrogen sulfide when dissolved in acid. Mainly used to produce hydrogen sulfide. Even if the storage of chemical reagents is sealed, it must be in contact with the air. In the presence of trace amounts of moisture in the air, ferrous sulfide is gradually oxidized into ferric oxide and sulfur. The chemical equation is as follows: 12FeS+8O2 water 12S+4Fe3O4. It will be faster. The higher the pressure, the greater the oxygen concentration, and the easier it is for oxidation reaction to cause spontaneous combustion. As for how much faster, you can do an experiment.
In other words, when air enters a normally operating catalytic device, it must first be stabilized naturally, and then fractionated. The reaction does not seem to be very good.