Method and device for incineration and vitrification of waste, in particular radioactive waste

An apparatus for processing organic waste in divided solid and/or liquid form by incineration and vitrification, the apparatus comprising a reactor associated with heater means suitable for maintaining a bath of molten glass in a bottom portion of said reactor, and fitted with:

• means for emptying said bath of molten glass;
• a feeding device for feeding said waste to be incinerated and vitrified, said feeding device having an open end opening above a surface of said bath of molten glass;
• means for feeding oxygen or oxygen-containing gas, delivering said oxygen or said oxygen-containing gas above the surface of said bath of molten glass;
• and
• at least one combustion gas outlet provided in a top portion of said reactor well above the surface of said bath of molten glass;
• the apparatus being characterized in that said reactor is further equipped with injection means having an open end for injecting oxygen or oxygen-containing gas into said bath of molten glass;
• said injection means:
• are introduced into the bottom portion of said reactor beneath the surface of said bath of molten glass so that said injection means do not pass through said gas above the surface of said bath of molten glass and being arranged in such a manner that on ceasing to be fed, said injection means do not form a plug of glass at their open end;
• and
• having a structure which includes at least one circuit for circulating a cooling fluid liquid therein.