Development and Pilot Testing of New Flow Diagrams for Plutonium Purification at the RT-1 Plant

To modernize the extraction facility of the RT-1 plant, two flow diagrams for plutonium purification have been developed. In the first flow diagram, the Pu(IV)–Np(IV) valence pair is stabilized and both Pu and Np are stripped and, in the second flow diagram, the Pu(IV)–Np(V) valence pair is stabiliz...

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Bibliographic Details
Published inTheoretical foundations of chemical engineering Vol. 53; no. 5; pp. 925 - 932
Main Authors Bugrov, K. V., Korotaev, V. G., Korchenkin, K. K., Logunov, M. V., Lukin, S. A., Mashkin, A. N., Melent’ev, A. B., Samarina, N. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2019
Springer Nature B.V
Subjects
Chemistry
Chemistry and Materials Science
Chemistry and Technology of Rare
Flowcharts
Hydrazine nitrate
Hydrogen peroxide
Industrial Chemistry/Chemical Engineering
Modernization
Neptunium
Plutonium
Purification
Radioactive Elements
Reagents
Report writing
Trace
Valence
SNF reprocessing
liquid extraction
neptunium
technetium
plutonium
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Summary:To modernize the extraction facility of the RT-1 plant, two flow diagrams for plutonium purification have been developed. In the first flow diagram, the Pu(IV)–Np(IV) valence pair is stabilized and both Pu and Np are stripped and, in the second flow diagram, the Pu(IV)–Np(V) valence pair is stabilized and only Pu is stripped. The problem of stabilizing the pair of the desired components in the required valence state is solved using reagents that had already been used at the RT-1 plant: hydrogen peroxide, hydrazine nitrate, and a catalyst (Fe). Both flow diagrams are adapted to the extraction facility of the plant with minimum changes in equipment and successfully pass extended process tests. As the result of this work, the volume and salt content of the raffinate are reduced.
ISSN:0040-5795
1608-3431
DOI:10.1134/S0040579519050051