Desulfurization of UCG Gas using a Packed-bed Dielectric Barrier Discharge

Abstract

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.