Experimental study on desulfurization using activated carbon under microwave irradiation in microwave reactor was carried out.  The effects of microwave irradiation power (reaction temperature), flue gas flow rate, SO2 concentration, and flue gas coexisting compositions on adsorption properties of activated carbon and desulfurization efficiency were investigated. The results show that, the higher the microwave power, the higher the desulfurization efficiency, the desulfurization efficiency would be more than 99% when the microwave power is more than 630 W; when the space velocity reaches 900/h, the adsorption capacity of SO2 in activated carbon bed is 27.66 mg/g; the adsorption capacity declines with increasing flue gas flow rate; the influence of SO2 on the adsorption capacity is not obvious; the adsorption capacity of SO2 is maximum under about 4% O2 content in flue gas, declines with the increasing of O2 content further; when the flue gas moisture content is less than 6.4%, water in flue gas is of benefit to adsorption of SO2 in activated carbon bed, but when the moisture content increases excessively, the removal efficiency of SO2 reduces. The adsorption capacity of NO increases slightly first, and drops to 12.79 mg/g and desulfurization efficiency descends with the increasing of the concentration of SO2.

Experimental study on removal of SO<sub>2 </sub>using microwave-swing adsorption of activated carbon

243rd National Meeting (2012)

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Experimental study on removal of SO2 using microwave-swing adsorption of activated carbon

Experimental study on removal of SO₂using microwave-swing adsorption of activated carbon