The issue of activated carbon adsorbing hydrogen sulfide
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The activated carbon in the desulfurization tank was replaced just half a month ago, yet there is no change in the hydrogen sulfide levels at the inlet and outlet. I’m not sure what’s going on; I’m seeking help
There is a limit to activated carbon adsorption, namely saturation; no change in hydrogen sulfide levels indicates that the adsorption capacity has been reached. Or there might be issues with the activated carbon filling, such as partial blockage, uneven flow, or loss.
Could it be that the activated carbon used for filling has a problem?
Saturated, I don’t think so. The entry results are not high; the filling process is inspected by dedicated personnel. I suspect that the conditions for adsorption may not be met
It needs to be regenerated; the adsorption capacity is saturated
If there is no oxygen in the feed gas, using activated carbon is not very effective either
The principle of desulfurization using activated carbon is that hydrogen sulfide adsorbed in the micropores of the activated carbon reacts with oxygen to produce elemental sulfur and water. Therefore, a trace amount of oxygen is generally required; 0.1% is sufficient to meet the process requirements. In other words, under anaerobic conditions, the desulfurization effect is definitely poor.
Activated carbon primarily removes organic sulfur; it also eliminates some hydrogen sulfide, as long as the activated carbon is not of poor quality.
Thank you all. My condition isn’t very good at the moment, and the hydrogen sulfide levels at the outlet have increased instead
Is there oxygen in the gas? Desulfurization is not possible in the absence of oxygen