公开(公告)号：US06518477B2

公开(公告)日：2003-02-11

申请号：US09841791

申请日：2001-04-24

申请人： Rengarajan Soundararajan

发明人： Rengarajan Soundararajan

IPC分类号： G21F932

CPC分类号： F23G5/0276 ,  B01D61/025 ,  C08G18/2018 ,  C08G18/542 ,  C08G18/7664 ,  C08K3/08 ,  C09D175/04 ,  F23G5/027 ,  F23G7/003 ,  F23G2201/301 ,  F23G2201/302 ,  F23G2209/18 ,  G21F1/106 ,  G21F9/02 ,  G21F9/06 ,  G21F9/30 ,  G21F9/305 ,  G21F9/307 ,  G21F9/36 ,  C08L75/04

摘要： A method for remediating non-homogeneous radioactive waste to significantly reduce the waste mass/volume and to convert such waste to products that meet federal regulatory compliance standards is disclosed. High level waste (HLW) stored in underground tanks is typically a multi component mixture. After removal of the waste from the tanks or other storage areas the waste is isolated in a thermal desorption-type reaction vessel where the waste is pyrolized at pre-determined and carefully controlled temperatures, pressures, and atmospheres. This process eliminates organics, volatile metals, moisture and other low boiling temperature/high vapor pressure components and converts non-volatile waste to more stable metal oxides. Off-gas treatment systems scrub, treat and dispose of all off-gas components. A thermal desorption-type apparatus especially well suited for performing the method of the present invention is also disclosed.