Patent ES-8506883-A3 (ES)
Title: Converting waste materials into stable prods.
IPC: F23G7/00
Filed: 1984-10-26
Abstract: Waste materials contg. or consisting of material decomposable by heat to produce stable end products such as CO2, H2O or HCl, are treated by plasma gas when fed into a reaction zone at 2000 deg.C or more and formed by a cavity in a permeable particulate filling inside a refractory-lined chamber. The plasma stream is blown from a generator into the filling. An oxygen potential is maintained in the reacton zone to continuously convert the decomposed prods. into stable end prods.. - Solid waste is first reduced to transportable size, e.g. max. particle size 2 mm, and conveyed in carrier gas. The filling is partly or completely carbonaceous material, e.g. coke, or sulphur-binding material such as dolomite. - Suitable for many materials, including dioxines, Freon, poison gas and oil-contaminated earth. The reaction parameters can be controlled to ensure required end product formation. DEAB- DE3224328 C Waste materials contg. or consisting of material decomposable by heat to produce stable end products such as CO2, H2O or HCl, are treated by plasma gas when fed into a reaction zone at 2000 deg.C or more and formed by a cavity in a permeable particulate filling inside a refractory-lined chamber. The plasma stream is blown from a generator into the filling. An oxygen potential is maintained in the reacton zone to continuously convert the decomposed prods. into stable end prods.. - Solid waste is first reduced to transportable size, e.g. max. particle size 2 mm, and conveyed in carrier gas. The filling is partly or completely carbonaceous material, e.g. coke, or sulphur-binding material such as dolomite. - Suitable for many materials, including dioxines, Freon, poison gas and oil-contaminated earth. The reaction parameters can be controlled to ensure required end product formation. (23pp) GBAB- GB2113815 B A method of converting waste material containing and/or comprising thermically disintegratable chemical substances to stable final products, the waste material, in order to effect disintegration, being subjected to a plasma gas of high temperature generated in a plasma generator, which comprises subjecting the waste material in feedable form to a high temperature at a low oxygen potential to obtain disintegration with little oxidation, passing the disintegration products through a reaction zone heated to at least 2000 deg. C with a plasma gas, said reaction zone being a cavity in a gas-permeable particulate filling arranged in a reaction chamber, said cavity being generated by directing the plasma gas jet from the plasma generator against said filling, and maintaining such an oxygen potential in the reaction zone that the disintegrating products are continuously transformed into stable final products. USAB- US4508040 A Waste material is processed by initially dissolving, suspending or crushing it to a convenient form and then feeding it, together with a high temp. gas plasma, into a reaction chamber. - The turbulent gas mixt. passes, with additional oxygen, into a reaction zone at a temp. of at least 2000 deg.C.  The reaction zone being formed as a cavity in the reaction chamber defined by pieces of carbonaceous material. The stable prods. are removed as gases or as a molten or solid prod. from the base of the chamber.