On oxygenation in the activated carbon desulfurization system
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According to the mechanism of desulfurization using activated carbon, H2S is first adsorbed on the surface of the activated carbon, where it reacts with oxygen on that active surface to produce elemental sulfur, which then deposits on the surface of the activated carbon. Thus, the oxygen content in the gas has a significant impact on the desulfurization effect; if the oxygen content is insufficient, the activated carbon loses its adsorption capacity quite quickly. To this end, our system uses an air compressor (0.8 m3/min) to add air at regular intervals (once every hour in summer, and half as often in winter). I wonder how others ensure the oxygen content in their systems?
We use a similar method as well, but the addition is done continuously; the air compressor is relatively small and is controlled by a control valve. It’s also important to stop the system in a timely manner when starting or stopping it, otherwise high oxygen levels in the entire system can cause problems