System for chemically digesting low level radioactive, solid was

Details System for chemically digesting low level radioactive, solid was System for chemically digesting low level radioactive, solid was

1979-11-28

1982-02-02

Kyle, Deborah L.

Compositions

Radioactive compositions

Nuclear reactor fuel

422159, 422184, 422231, 422903, 252631, G21F 928, G21F 706

Patent

active

043138454

ABSTRACT:
An improved method and system for chemically digesting low level radioactive, solid waste material having a high through-put. The solid waste material is added to an annular vessel (10) substantially filled with concentrated sulfuric acid. Concentrated nitric acid or nitrogen dioxide is added to the sulfuric acid within the annular vessel while the sulfuric acid is reacting with the solid waste. The solid waste is mixed within the sulfuric acid so that the solid waste is substantilly fully immersed during the reaction. The off gas from the reaction and the products slurry residue is removed from the vessel during the reaction.

REFERENCES:
patent: 3557013 (1971-01-01), Detilleux et al.
patent: 3776856 (1973-12-01), Scheffler et al.
patent: 3957676 (1976-05-01), Cooley et al.
patent: 3958948 (1976-05-01), Kilian
patent: 4124525 (1978-11-01), Bornes et al.
Carter et al., Management of Low-Level Radioactive Waste, vol. 1, Pergammon Press, New York (1979), pp. 254-257.
Perry, Chemical Engineers' Handbook 3rd Ed., McGraw-Hill Book Co., Inc. New York, (1950), pp. 1203-1204.
Lerch et al., "Treatment of Alpha-Bearing Combustible Wastes Using Acid Digestion", Chem. Abs., vol. 89 (1978): 117179u.

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