PLASMA REACTOR, AND WASTE PROCESSING SYSTEM AND METHOD WITH SUCH REACTOR

The object of the present invention is a plasma reactor (10) to convert waste material by thermal plasma into desired end product. The plasma reactor (10) comprises a reaction volume (5) delimited by walling (14), a gas outlet port (19) and a melt treatment unit (13), wherein said gas outlet port (19) delimits the reaction volume (5) from the top and said melt treatment unit (13) delimits the reaction volume (5) from the bottom, and wherein - when the plasma reactor (10) is in operation - the reaction volume (5) is connected to both the gas outlet port (19) and the melt treatment unit (13) to maintain a free flow of material there through, and wherein the reaction volume (5) includes agaseous material treatment region (5C), a gasification region (5B) and a melt treatment region (5 A), the gaseous material treatment region opens directly to the gas outlet port (19), the melt treatment region (5 A) at least partially forms part of the melt treatment unit (13) and the gasification region (5B) is located between the gaseous material treatment region (5C) and the melt treatment region (5 A); a waste material supply mechanism passing through the walling (14) and opening into the gasification region (5B) of the reaction volume (5); plasma torches arranged to generate thermal plasma in each of said regions (5 A, 5B, 5C) of the reaction volume (5) separately, wherein at least one plasma torch is provided for generating the thermal plasma in each region (5 A, 5B, 5C); sensors (11, 11') arranged in said regions (5 A, 5B, 5C) of the reaction volume (5), the sensors (11, 11') are configured to monitor physical and/or chemical conditions prevailing within said regions (5 A, 5B, 5C) and to measure physical/chemical parameters representative of said conditions at given instances when the plasma reactor (10) is in operation; a data collecting and control unit, wherein said sensors (11, 11') are in data communication connection with the data collecting and control unit for transferring measurement data obtained by measurements performed by the sensors, the measurement date being representative of the instantaneous physical and/or chemical conditions prevailing within said regions (5 A, 5B, 5C) when the plasma reactor (10) is in operation. In the plasma reactor (10) according to the invention, each plasma torch comprises an arc forming material supply inlet (D) for introducing arc forming material into the reaction volume (5) and an additive supply inlet (C) for introducing