Methods for treatment of radioactive organic waste
AssigneeStudsvik, Inc.
InventorsJ. Bradley Mason, Walter Scott Roesener
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Abstract
Treatment of radioactive waste comprising organic compounds, and sulfur-containing compounds and/or halogen-containing compounds. An apparatus comprises a reaction vessel comprising a filter for carrying out thermal treatment of the waste and a thermal oxidizer. Utilizing co-reactants to reduce gas phase sulfur and halogen from treatment of wastes.
Claims36
A method for treating radioactive waste comprising organic compounds, and sulfur-containing compounds and/or halogen-containing compounds, the method comprising:
- (a) adding radioactive waste comprising organic compounds, and sulfur-containing compounds and/or halogen-containing compounds;
- and one or more co-reactants to a reaction vessel comprising a filter to form a bed in the lower portion of the reaction vessel comprising a filter;
- (b) heating the reaction vessel comprising a filter to a temperature of in the range of about 250° C. to about 1050° C. to form pyrolyzed radioactive waste residues and waste gases;
- (c) agitating, partially fluidizing or jetting the bed of the reaction vessel comprising a filter;
- (d) optionally, adding a reactive gas to the reaction vessel to gasify carbon in the pyrolyzed waste residues;
- (e) removing pyrolyzed radioactive waste residues from the reaction vessel comprising a filter for disposal;
- and
- (f) transferring the waste gases from the reaction vessel comprising a filter to a thermal oxidizer for combustion;
- wherein the reaction vessel comprising a filter may optionally be heated to a temperature of in the range of about 250° C. to about 1050° C. prior to step (a).
A method for treating radioactive waste comprising organic compounds, and sulfur-containing compounds and/or halogen-containing compounds, the method comprising:
- (a) adding radioactive waste comprising organic compounds, and sulfur-containing compounds and/or halogen-containing compounds;
- and one or more co-reactants to a process reaction vessel to form a bed in the lower portion of the process reaction vessel;
- (b) heating the process reaction vessel to a temperature in the range of about 35° C. to about 1050° C.;
- (c) agitating, partially fluidizing or jetting the bed while maintaining the temperature of the process reaction vessel in the range of about 35° C. to about 1050° C. to form fully or partially pyrolyzed radioactive waste residues and waste gases;
- (d) transferring the fully or partially pyrolyzed radioactive waste residues and waste gases from the process reaction vessel to a reaction vessel comprising a filter to form a bed in the lower portion of the reaction vessel comprising a filter;
- (e) heating the reaction vessel comprising a filter to a temperature in the range of about 250° C. to about 1050° C.;
- (f) agitating, partially fluidizing or jetting the bed of the reaction vessel comprising a filter while maintaining the temperature of the reaction vessel comprising a filter in the range of about 250° C. to about 1050° C. to form fully or partially pyrolyzed radioactive waste residues and waste gases;
- (g) optionally, adding a reactive gas to the reaction vessel comprising a filter to gasify carbon in the partially pyrolyzed waste residues;
- (h) removing the fully pyrolyzed radioactive waste residues from the reaction vessel comprising a filter for disposal;
- and
- (i) transferring the waste gases from the reaction vessel comprising a filter to a thermal oxidizer for combustion;
- wherein the process reaction vessel may optionally be heated to a temperature in the range of about 35° C. to about 1050° C. prior to step (a);
- and wherein the reaction vessel comprising a filter may optionally be to heated to a temperature in the range of about 250° C. to about 1050° C. prior to step (d).
Dependencies are inferred from the claim text.