Does burning occur when activated carbon is regenerated using hot air? !
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The temperature of the hot air is around 150 degrees; is it possible for the activated carbon to catch fire under such conditions? ! Is steam regeneration generally used? ! Thank you! !
This post was last edited by ylb913 on 2016-12-7 at 18:50. Steam is used in ordinary devices. When using hot air, there needs to be a sufficient amount of it to remove heat and maintain the temperature at such a level that only oxidation occurs, without any open flame. A sufficient amount means that, aside from the oxygen consumed for oxidation, the excess is actually the cooling medium.
Using steam inevitably produces water, which has a significant impact on the performance of activated carbon. . .
Why not use hot nitrogen? ?
Confirm combustion at 150°C? Regeneration isn’t activation, right! The activation temperature would have to be much higher! ! So it’s okay!
If thermal air heating for regeneration is intended, consult the catalyst supplier regarding its ignition point. Alternatively, regeneration using hot nitrogen can completely prevent spontaneous combustion.
Generally, the ignition point of granular activated carbon is above 350°C, and it does not burn. The most important thing is what the activated carbon has absorbed and whether it is flammable.
What you said is worth considering; thank you. . .