DOI QR코드

DOI QR Code

Restoration of the isotopic composition of reprocessed uranium hexafluoride using cascade with additional product

  • 투고 : 2020.02.07
  • 심사 : 2020.05.19
  • 발행 : 2020.12.25

초록

In reprocessed uranium, derived from an impoverished fuel of light-water moderated reactors, there are isotopes of 232, 234, 236U, which make its recycling remarkably difficult. A method of concentration of 235U target isotope in cascade's additional product was proposed to recover the isotopic composition of reprocessed uranium. A general calculation procedure is presented and a parameters' optimization of multi-flow cascades with additional products. For the first time a numeric model of a cascade that uses the cuts of partial flows of stages with relatively high separation factors was applied in this procedure. A novel computing experiment is carried out on separation of reprocessed uranium hexafluoride with providing a high concentration of 235U in cascade's additional product with subsequent dilution. The parameters of cascades' stages are determined so as to allow reducing the 232, 234, 236U isotope content up to the acceptable. It was demonstrated that the dilution of selected products by the natural waste makes it possible to receive a low enriched uranium hexafluoride that meets the ASTM C996-15 specification for commercial grade.

키워드

참고문헌

  1. J.R. Coleman, T.W. Knight, Evaluation of multiple, self-recycling of reprocessed uranium in LWR, Nucl. Eng. Des. 240 (2010) 1028-1032.
  2. V.V. Vodolazskikh, V.A. Kozlov, V.I. Mazin, M.I. Sterkhov, V.V. Shidlovsky, V.I. Schelkanov, Method of the isotopic restoration of the regenerated uranium. Pat. RF N° 2282904. 27.08.2006. (in Russian), Bull. «Investigations. Useful models» 24 (2006) 549-550.
  3. A.Y. Smirnov, G.A. Sulaberidze, Enrichment of regenerated uranium with simultaneous dilution of 232-236U by raw and waste uranium, At. Energy 117 (1) (2014) 44-51.
  4. V.A. Palkin, E.V. Maslyukov, Purification of regenerated uranium hexafluoride by removal of 232U, 234U, 236U in the intermedial product of a two-feed-flow cascade, At. Energy 126 (2) (2019) 110-115.
  5. A.Y. Smirnov, G.A. Sulaberidze, A.A. Dudnikov, V.A. Nevinitsa, Enrichment of regenerated uranium in a gas centrifuge cascade with simultaneous dilution of 232-236U by waste and low-enrichment uranium, At. Energy 122 (5) (2017) 353-357.
  6. A.Yu. Smirnov, V.E. Gusev, G.A. Sulaberidze, V.A. Nevinitsa, A method to enrich reprocessed uranium with various initial contents of even-numbered isotopes, AIP Conf. Proc. 2101 (2019), 020006.
  7. G.A. Sulaberidze, V.D. Borisevich, Cascades for separation of multicomponent isotope mixtures, Separ. Sci. Technol. 36 (8/9) (2001) 1769-1817.
  8. G.A. Sulaberidze, V.D. Borisevich, Q. Xie, Quasi-ideal cascades with an additional flow for separation of multicomponent isotope mixtures, Theor. Found. Chem. Eng. 40 (1) (2006) 5-13.
  9. A.Yu. Smirnov, G.A. Sulaberidze, V.D. Borisevich, Influence of feed flow profile of cascades stages on the mass transfer of intermediate components, Theor. Found. Chem. Eng. 44 (6) (2010) 888-896.
  10. A.Yu. Smirnov, G.A. Sulaberidze, Q-cascades for obtaining highly concentrated intermediate components of separated mixtures, Theor. Found. Chem. Eng. 47 (4) (2013) 375-380.
  11. S. Zeng, D. Jiang, Y. Zhang, V.D. Borisevich, G.A. Sulaberidze, A.Yu. Smirnov, Enhancing the performance of Q-cascade for separating intermediate components, J. Phys.: Conf. Ser. 751 (1) (2016), 012004.
  12. A.Yu. Smirnov, G.A. Sulaberidze, Q. Xie, V.D. Borisevich, Design of cascade with locally enlarged flow for enrichment of intermediate components of multi-isotope mixtures, Chem. Eng. Res. Des. 95 (2015) 47-54.
  13. V.A. Palkin, Multistream cascades for separation of multicomponents isotopic mixtures, At. Energy 119 (2) (2015) 125-131.
  14. Von Halle, E., Multicomponent isotope separation in matched abundance ratio cascades composed of stages with large separation factors, in: Proceedings of the 1st Workshop on Separation Phenomena in Liquids and Gases. Darmstadt, Germany, 1987, July 20-23, 325-356.
  15. A.A. Sazykin, Thermodynamical approach to the isotope separation, in: V.Yu. Baranov (Ed.), Isotopes: Properties, Obtainment, Application (In Russian), AT publ., Moscow, 2000, pp. 72-108.
  16. T. Kai, Designing and analysis study of uranium enrichment with gas centrifuge, in: Proceedings of the 9th International Workshop on Separation in Liquids and Gases, 2006, pp. 245-277.
  17. V.D. Borisevich, J. Yan, A.Y. Smirnov, A.K. Bonarev, S. Zeng, G.A. Sulaberidze, D. Jiang, Cascade design for isotopically modified molybdenum as an alternative to zirconium alloys, Chem. Eng. Res. Des. 128 (2017) 257-264.
  18. A.Yu. Smirnov, G.A. Sulaberidze, A.A. Dudnikov, V.A. Nevinitsa, Enrichment of regenerated uranium in a gas centrifuge cascade with simultaneous dilution of 232,236U by waste and low-enrichment uranium, At. Energy 122 (5) (2017) 353-357.
  19. Yu.G. Pavlov, Yu.A. Ul'yanin, D.A. Lazarev, V.V. Kharitonov, Economic efficiency of bringing depleted uranium into enrichment, At. Energy 127 (1) (2019) 33-39.

피인용 문헌

  1. Gas Centrifuge Cascade for Concentrating 235U in Additional Product and Purification of Processed Uranium Hexafluoride from 232,234,236U vol.130, pp.2, 2021, https://doi.org/10.1007/s10512-021-00779-8