METHOD FOR PROCESSING SPENT RESORCINOL-FORMALDEHYDE ION-EXCHANGE RESINS USED FOR CLEANING LRW FROM CESIUM RADIONUCLIDES Russian patent published in 2021 - IPC G21F9/04 

Abstract RU 2755362 C1

FIELD: nuclear power.

SUBSTANCE: invention relates to nuclear power, in particular to the technology of conditioning and processing of radioactive waste, and can be used to deactivate spent resorcinol-formaldehyde ion-exchange resins. The method consists in dissolving spent resorcinol-formaldehyde ion-exchange resins at room temperature by sequential treatment with small volumes of solutions of nitric acid and alkali and subsequent hydrothermal oxidation in a flow-through reactor at a temperature of 195-250°С in the presence of hydrogen peroxide.

EFFECT: invention allows implementing continuous homogeneous processing.

1 cl, 1 dwg, 11 ex

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RU 2 755 362 C1

Authors

Palamarchuk Marina Sergeevna

Egorin Andrei Mikhailovich

Bratskaia Svetlana Iurevna

Dates

2021-09-15Published

2021-03-15Filed