부산대학교 도서관

A pulse-energized electron reactor (PEER) which utilizes pulsed streamer corona has been developed for the combined removal of SO{sub 2}, NO{sub x}, and particles from effluent gases. In the PEER process, fast-rising, narrow, high voltage pulses are superimposed on a dc-bias voltage and applied to a non-uniform electric field geometry to generate pulsed streamer corona. The pulsed streamer corona produces energetic free electrons which dissociate gas molecules, forming radicals. These radicals cause chemical reactions that convert SO{sub 2} and NO{sub x} into acid mists and/or solids which can be removed from the gas stream by conventional means. The pulsed streamer corona also produces ions, and between pulses the ions charge the fly ash particles which are then collected by the dc-bias field. In PEER performance tests on a humid air stream with an initial SO{sub 2} concentration of 1000 ppm, more than 90% of the SO{sub 2} was removed with an advantageously small power requirement. Combined treatment performance was demonstrated by introducing high resistivity fly ash into the gas stream. 16 refs., 9 figs., 1 tab.