Questions about wet-process activated carbon desulfurization
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After reviewing numerous sources, it is generally stated that exhaust gases containing oxygen and water vapor are adsorbed on activated carbon, where SO2 is oxidized to SO3; this substance then reacts with water to form dilute sulfuric acid, which is carried away through water spray. In my system, the process involves first mixing the produced dilute acid with the exhaust gas, and then sending it to activated carbon; of course, there is also a process in which demineralized water is sprayed. I don’t understand why the dilute acid needs to be mixed with the exhaust gas first – I hope someone experienced can explain this
Moisturizing first can prevent the formation of concentrated acid in certain areas, thus eliminating the risk of fire.