58 research outputs found
Regenerated Uranium Separation in Matched Abundance Ratio Cascade with Additional Product Flow
This paper addresses known methods used to purify regenerated uranium in single and double cascades. A new method for separating regenerated uranium has been developed that enables a significant reduction of the concentration of 232,234U in the additional product flow. Matched abundance ratio cascades (Mβ-cascades) with different key components and additional product flow are used in the new method. Main product flow of the Mβ-cascade contains low enriched regenerated uranium. It can be used for reactor fuel production. Purified product can be enriched in the ordinary cascade in compliance with the requirements of ASTM C 996-10 set for isotopes 232,234U in low enriched commercial uranium, which is usually produced from the natural one. Computer experiment based on the new method has been performed. The experiment shows that the best cascade with the maximum flow of the enriched purified product is Mβ-cascade with key components 232,236U. Β© Published under licence by IOP Publishing Ltd
ΠΡΠΈΡΡΠΊΠ° ΡΠ΅Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΡΠ°Π½Π° Π² ΠΊΠ°ΡΠΊΠ°Π΄Π°Ρ Ρ ΠΎΠ±ΠΎΠ³Π°ΡΠ΅Π½ΠΈΠ΅ΠΌ 235U Π΄ΠΎ 5 %
ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π° ΠΎΡΠΈΡΡΠΊΠ° ΡΠ΅Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΡΠ°Π½Π° Π² ΠΊΠ°ΡΠΊΠ°Π΄Π΅, ΠΎΠΏΡΠΈΠΌΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΌ Π½Π° Π·Π°Π΄Π°Π½Π½ΡΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ 232U, ΡΠΎ ΡΠΌΠ΅ΡΠ΅Π½ΠΈΠ΅ΠΌ ΡΠΎΡΠΊΠΈ ΠΏΠΎΠ΄Π°ΡΠΈ ΠΏΠΈΡΠ°Π½ΠΈΡ Π² ΡΡΠΎΡΠΎΠ½Ρ ΠΎΡΠ±ΠΎΡΠ°. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ ΠΊΠ°ΡΠΊΠ°Π΄Π° Ρ ΠΎΠ±ΠΎΠ³Π°ΡΠ΅Π½ΠΈΠ΅ΠΌ 235U Π² ΠΎΡΠ±ΠΎΡΠ΅ ΠΌΠ΅Π½Π΅Π΅ 5 %, ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠΈΠ΅ Π² ΠΎΡΠ²Π°Π»ΡΠ½ΠΎΠΌ ΠΏΠΎΡΠΎΠΊΠ΅ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ ΠΏΠΎΠ»Π½ΡΡ ΠΎΡΠΈΡΡΠΊΡ ΠΎΡ 232U ΠΏΡΠΈ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ 235U, Π±Π»ΠΈΠ·ΠΊΠΎΠΉ ΠΊ ΠΏΠΈΡΠ°Π½ΠΈΡ. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ ΠΎΠ΄Π½ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ ΠΎΡΠΈΡΡΠΊΠΈ ΠΎΡ 234U ΠΏΡΠΈ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΠΈ ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ ΡΠ΅Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΡΠ°Π½Π° Π² ΠΎΡΠ²Π°Π» ΠΊΠ°ΡΠΊΠ°Π΄Π°. ΠΠ»Ρ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ 236U Π² Π½ΠΈΠ·ΠΊΠΎΠΎΠ±ΠΎΠ³Π°ΡΠ΅Π½Π½ΠΎΠΌ ΡΡΠ°Π½Π΅, ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΠΌΠΎΠΌ ΠΈΠ· ΠΎΡΠΈΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΠ΅Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΡΠ°Π½Π°, ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ ΡΠ°Π·Π±Π°Π²Π»Π΅Π½ΠΈΡ ΠΈ ΠΎΠ±ΠΎΠ³Π°ΡΠ΅Π½ΠΈΡ
ΠΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΠΎΠ² ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΏΡΠΈ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΠΊΠ°ΡΠΊΠ°Π΄ΠΎΠ²
Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΡ ΠΊΠ°ΡΠΊΠ°Π΄ΠΎΠ² ΠΏΠΎ ΠΊΡΠΈΡΠ΅ΡΠΈΡ ΠΌΠ°ΠΊΡΠΈΠΌΡΠΌΠ° ΡΠ°Π·Π΄Π΅Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ², ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ΅ΠΌΠΎΠΉ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»Π° ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° ΠΈ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·Π°ΡΠΈΠ΅ΠΉ ΡΡΠΌΠΌΠ°ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ° ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π½Π΅Π·Π°Π²ΠΈΡΠΈΠΌΠΎ ΠΎΡ ΡΡΡΠ΅ΠΊΡΠ° ΠΎΠ±ΠΎΠ³Π°ΡΠ΅Π½ΠΈΡ Π½Π° ΡΡΡΠΏΠ΅Π½ΡΡ
ΠΊΠ°ΡΠΊΠ°Π΄Π° Π΄Π»Ρ Π±ΠΈΠ½Π°ΡΠ½ΡΡ
ΡΠΌΠ΅ΡΠ΅ΠΉ ΠΏΡΠΈΠΌΠ΅Π½ΠΈΠΌΡ ΡΠ°Π·Π½ΡΠ΅ ΡΠΎΡΠΌΡ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΠΎΠ², Π²ΠΊΠ»ΡΡΠ°ΡΡΠΈΠ΅ ΠΈΡ
Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ ΠΎΡ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΠΎΠ² ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ. ΠΡΠΈ ΠΌΠ½ΠΎΠ³ΠΎΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ½ΠΎΠΌ ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΠΈ Π²ΡΠ±ΠΎΡ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»Π° ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ Π·Π°Π²ΠΈΡΠΈΡ ΠΎΡ ΠΈΠ·ΠΎΡΠΎΠΏΠ½ΠΎΠΉ ΡΠΌΠ΅ΡΠΈ ΠΈ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΠΏΡΠΎΡΠ΅ΡΡΠ°
ΠΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΡ ΠΊΠ°ΡΠΊΠ°Π΄Π° ΡΠ΅Π½ΡΡΠΈΡΡΠ³ Π΄Π»Ρ ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΠ½ΠΎΠ³ΠΎΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ½ΠΎΠΉ ΡΠΌΠ΅ΡΠΈ ΠΈΠ·ΠΎΡΠΎΠΏΠΎΠ²
Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΌΠ΅ΡΠΎΠ΄ ΡΠ°ΡΡΠ΅ΡΠ° ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΡ
ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΠΊΠ°ΡΠΊΠ°Π΄Π° Π³Π°Π·ΠΎΠ²ΡΡ
ΡΠ΅Π½ΡΡΠΈΡΡΠ³ Π΄Π»Ρ ΡΠ°Π·Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΠ½ΠΎΠ³ΠΎΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ½ΠΎΠΉ ΡΠΌΠ΅ΡΠΈ ΠΈΠ·ΠΎΡΠΎΠΏΠΎΠ². ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π° ΡΠ½ΠΈΠ²Π΅ΡΡΠ°Π»ΡΠ½Π°Ρ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½Π°Ρ ΡΡ
Π΅ΠΌΠ°, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡΠ°Ρ ΠΎΠΏΡΠΈΠΌΠΈΠ·ΠΈΡΠΎΠ²Π°ΡΡ ΠΊΠ°ΡΠΊΠ°Π΄ ΠΏΡΠΈ ΡΠ°Π·Π½ΡΡ
ΠΊΡΠΈΡΠ΅ΡΠΈΡΡ
ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΡΡΠΌΠΌΠ°ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ° ΠΊΠ°ΡΠΊΠ°Π΄Π° ΠΏΡΠΈ Π·Π°Π΄Π°Π½Π½ΡΡ
Π²Π½Π΅ΡΠ½ΠΈΡ
ΠΏΠΎΡΠΎΠΊΠ°Ρ
ΠΈ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ ΡΠ΅Π»Π΅Π²ΠΎΠ³ΠΎ ΠΈΠ·ΠΎΡΠΎΠΏΠ°. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΡΠΌΠ΅ΡΠ΅Π½ΠΈΠΈ ΡΠΎΡΠΊΠΈ ΠΏΠΎΠ΄Π°ΡΠΈ ΠΏΠΈΡΠ°Π½ΠΈΡ ΠΊΠ°ΡΠΊΠ°Π΄Π° ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΠΎΠΏΡΠΈΠΌΡΠΌΠ°, ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠ΅Π³ΠΎ ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΠ΅ ΡΠΈΡΠ»ΠΎ ΡΠ΅Π½ΡΡΠΈΡΡΠ³, ΠΌΠΎΠΆΠ½ΠΎ ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ Π½Π΅ΡΠ΅Π»Π΅Π²ΡΡ
ΠΈΠ·ΠΎΡΠΎΠΏΠΎΠ² Π² ΠΎΡΠ±ΠΎΡΠ΅ ΠΈ ΠΎΡΠ²Π°Π»Π΅ ΠΊΠ°ΡΠΊΠ°Π΄Π°. Π’Π°ΠΊΠ°Ρ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΡ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Π° Π΄Π»Ρ ΠΎΡΠΈΡΡΠΊΠΈ ΡΠ΅Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΡΠ°Π½Π° ΠΎΡ 232U
OPTIMIZATION OF MULTISTREAM CASCADES WITH A GIVEN NUMBER OF GAS CENTRIFUGES FOR PURIFICATION OF REGENERATED URANIUM HEXAFLUORIDE FROM 232, 234, 236U
method for optimization of multistream cascades for purification of regenerated ura-nium from even isotopes is improved by using several types of stages with a given number of gas centrifuges. The operating modes of the stages have been determined by the artificial bee colony algorithm
Reprocessed uranium purification in cascades with 235U enrichment to 5%
The purification of reprocessed uranium in a cascade optimized to a prescribed 232U concentration with the feed flow displaced toward the product flow is investigated by means of a computational experiment. The parameters of a cascade with 235U enrichment <5% in the product, which ensures almost complete purification from 232U with 235U concentration close to that in the feed flow, are determined. The possibilities for simultaneous purification from 234U with reduction of reprocessed uranium extraction into the waste flow are examined. Additional dilution and enrichment operations are proposed in order to decrease the 236U concentration in low-enrichment uranium produced from purified reprocessed uranium. Β© 2013 Springer Science+Business Media New York
Optimization of the Cascade with Two Additional Product Flows for the Simultaneous Concentration of Intermediate Molybdenum Isotopes
A technique has been developed for optimizing multiflow cascades to obtain highly concentrated intermediate molybdenum isotopes. A computational experiment was carried out to separate a mixture of molybdenum isotopes. Various cases for the separation of molybdenum isotopes in cascades with large step separation coefficients corresponding to gas centrifuges were considered. It is shown that using of the bee swarm optimization has an advantage over the Hook-Jeeves method. Β© 2020 American Institute of Physics Inc.. All rights reserved
Production of highly concentrated intermediate molybdenum isotopes in optimal cascade with two additional product flows
The problem of highly concentrated molybdenum isotopes production in multiflow cascades is considered. A method of the cascade with two additional product flows optimization has been developed. Two components intermediate in weight are concentrated simultaneously in those flows. The optimization problem is solved using a variation of the partial flow cuts of the cascade stages with large separation coefficients. The optimization criterion is the minimum of the stage total feed flow while ensuring a given concentration of isotopes. A computational experiment was carried out to separate a mixture of molybdenum hexafluoride. The experiment demonstrated the features of intermediate components concentrating in additional product flows of the cascade. Β© 2020 Published under licence by IOP Publishing Ltd
Separation of boron isotopes in optimal cascade of uniflow gas centrifuges
Was considered a problem of an optimization of concurrent gas centrifuges for separation of Boron isotopes in form of trifluoride BF3. As the criteria was used a minimum of total number of gas centrifuges upon the given external parameters of the cascades' scheme. The method is based on the analytical relationships for the flows of stages, received under approximating minimization of the total feed flow. Conducted cascade calculations showed that it is possible to obtain BF3 with enrichment up to 99.9 % of 10B in the selection and up to 0.1 % in the waste, which is equivalent to 99.9 % of 11B. Β© 2020 Published under licence by IOP Publishing Ltd
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