Generating of dispersed thermal plasma

Summary form only given: Two models of plasma generator /reaction chamber/ with divergent channels have been designed and used in the laboratory testing. The arc was magnetically driven between co-axial electrodes of different shape and configuration making the nozzle conical or spiraling. These resulted in fast arc expansion and a thermal tail formation called the dispersed plasma. Some diagnostic techniques including spectroscopy were employed. These plasma reactors named ROTARC and SPIRARC have been successfully used in thermal destruction of chlorinated wastes. The destruction efficiency higher than 99,999% has been achieved. In this paper the plasma generators design principle and test results aimed to establish the arc discharge stability criteria are presented.