Simulation of 36S stable isotope enrichment by square single withdrawal cascade
Among the four stable isotopes of sulfur, the heaviest isotope, 36S, has found many applications in radioisotope production and neutron activation. In the present work, due to the very low natural abundance of 36S, the single withdrawal cascades are used to separate this isotope. The concentration d...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Nuclear Science and Technology Research Institute
2021-09-01
|
| Series: | مجله علوم و فنون هستهای |
| Subjects: | |
| Online Access: | https://jonsat.nstri.ir/article_1291_389bfce2f7aef85f9a9b0ebd8e0f65df.pdf |
| _version_ | 1797835392563544064 |
|---|---|
| author | A.R. Keshtkar A. Rashidi J. Karimi Sabet A. Noroozi |
| author_facet | A.R. Keshtkar A. Rashidi J. Karimi Sabet A. Noroozi |
| author_sort | A.R. Keshtkar |
| collection | DOAJ |
| description | Among the four stable isotopes of sulfur, the heaviest isotope, 36S, has found many applications in radioisotope production and neutron activation. In the present work, due to the very low natural abundance of 36S, the single withdrawal cascades are used to separate this isotope. The concentration distribution equations in the transient state are separated using the Laasonen method and linearized by the q iteration method to simulate the cascade. The code is validated using existing experimental results. To separate the 36S isotope to a high concentration of 90% by a fixed number of centrifuge machines, different arrangements of the square single withdrawal cascades, the feed stage location, and the feed flow rate were investigated. In the arrangement with 15 stages and eight centrifuge machines at each stage, the concentration of 36S in the reservoir reaches 95% after 1460 hours. The results showed that reducing the feed flow of the cascade and increasing the distance of the feed stage from the reservoir leads to an increment in the concentration of 36S in the reservoir. |
| first_indexed | 2024-04-09T14:53:18Z |
| format | Article |
| id | doaj.art-8704763192304ce7aa98c4ba1a79a3f7 |
| institution | Directory Open Access Journal |
| issn | 1735-1871 2676-5861 |
| language | fas |
| last_indexed | 2024-04-09T14:53:18Z |
| publishDate | 2021-09-01 |
| publisher | Nuclear Science and Technology Research Institute |
| record_format | Article |
| series | مجله علوم و فنون هستهای |
| spelling | doaj.art-8704763192304ce7aa98c4ba1a79a3f72023-05-02T09:05:52ZfasNuclear Science and Technology Research Instituteمجله علوم و فنون هستهای1735-18712676-58612021-09-0142381710.24200/nst.2021.12911291Simulation of 36S stable isotope enrichment by square single withdrawal cascadeA.R. Keshtkar0A. Rashidi1J. Karimi Sabet2A. Noroozi3Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 11365-8486, Tehran-IranFaculty of Engineering and Technology, University of Mazandaran, P.O.Box: 416, Babolsar-IranNuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 11365-8486, Tehran-IranIran Advanced Technologies Compony, AEOI, P.O.Box: 143995-5931, Tehran-IranAmong the four stable isotopes of sulfur, the heaviest isotope, 36S, has found many applications in radioisotope production and neutron activation. In the present work, due to the very low natural abundance of 36S, the single withdrawal cascades are used to separate this isotope. The concentration distribution equations in the transient state are separated using the Laasonen method and linearized by the q iteration method to simulate the cascade. The code is validated using existing experimental results. To separate the 36S isotope to a high concentration of 90% by a fixed number of centrifuge machines, different arrangements of the square single withdrawal cascades, the feed stage location, and the feed flow rate were investigated. In the arrangement with 15 stages and eight centrifuge machines at each stage, the concentration of 36S in the reservoir reaches 95% after 1460 hours. The results showed that reducing the feed flow of the cascade and increasing the distance of the feed stage from the reservoir leads to an increment in the concentration of 36S in the reservoir.https://jonsat.nstri.ir/article_1291_389bfce2f7aef85f9a9b0ebd8e0f65df.pdfsingle withdrawal cascadessquare arrangement36s isotopetransient conditionsimulationq iteration method |
| spellingShingle | A.R. Keshtkar A. Rashidi J. Karimi Sabet A. Noroozi Simulation of 36S stable isotope enrichment by square single withdrawal cascade مجله علوم و فنون هستهای single withdrawal cascades square arrangement 36s isotope transient condition simulation q iteration method |
| title | Simulation of 36S stable isotope enrichment by square single withdrawal cascade |
| title_full | Simulation of 36S stable isotope enrichment by square single withdrawal cascade |
| title_fullStr | Simulation of 36S stable isotope enrichment by square single withdrawal cascade |
| title_full_unstemmed | Simulation of 36S stable isotope enrichment by square single withdrawal cascade |
| title_short | Simulation of 36S stable isotope enrichment by square single withdrawal cascade |
| title_sort | simulation of 36s stable isotope enrichment by square single withdrawal cascade |
| topic | single withdrawal cascades square arrangement 36s isotope transient condition simulation q iteration method |
| url | https://jonsat.nstri.ir/article_1291_389bfce2f7aef85f9a9b0ebd8e0f65df.pdf |
| work_keys_str_mv | AT arkeshtkar simulationof36sstableisotopeenrichmentbysquaresinglewithdrawalcascade AT arashidi simulationof36sstableisotopeenrichmentbysquaresinglewithdrawalcascade AT jkarimisabet simulationof36sstableisotopeenrichmentbysquaresinglewithdrawalcascade AT anoroozi simulationof36sstableisotopeenrichmentbysquaresinglewithdrawalcascade |