The technology of DESO2 from flue gas by PPCP(Pulse Corona Induced Plasma Chemical Process) had obvious advantages, but the method could make the positive ions and electrons leave the streamer channels, the range of complex reaction be not big enough, the free radicals be not widely distributed, which was difficult to produce a stable, wide range and effective streamer. It had a bad influence in DESO2 from flue gas and decreased the efficiency of DESO2 seriously. In the paper, the technology of inspiring streamer discharge plasma by DC superimposed high voltage pulse power supply was presented and the mechanism of streamer discharge plasma desulfurization was analyzed. The mechanism of DESO2 was also used to develop pulse power which could do DESO2 from flue gas. Through the field operation test, it showed that the technical scheme of high voltage pulse superimposed on the DC high voltage can improve the efficiency of DESO2 effectively.
