An artificial underground coal gasification (UCG) gas, which is a mixture of N2, CO2, H2 and H2S, is decomposed using a packed-bed dielectric barrier discharge, and the desulfurization characteristics of the UCG gas are investigated. It is found that 81% of H2S in the UCG gas is desulfurated at input energy of 46 Wh without H2 decomposition. It is also found that CO, SO2 COS and CS2 are produced as by-products during the plasma desulfurization of the UCG gas.
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