Protium removal from deuterium-tritium mixture with displacement chromatography method: Experiments and simulations |
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| Affiliation: | 1. Green Center for Systems Biology, University of Texas Southwestern Medical Center, Forest Park, Dallas, TX, 75390, USA;2. Department of Physics and Astronomy, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA;3. Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA;1. College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, Zhejiang, 311121, PR China;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, PR China;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, PR China;2. School of Civil Engineering, Hefei University of Technology, Hefei 230009, PR China;3. Anhui International Joint Research Center on Hydrogen Safety, Hefei, 230009, China;1. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China |
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| Abstract: | The displacement chromatography technique with a tri-column system was used to reduce the protium (H) in the deuterium-tritium (D-T) mixture, and the separation performance was studied numerically by ANSYS FLUENT. The experimental results showed that the isotopic abundance of H in the D-T mixture dropped from 2.7% to an acceptable level of 0.88%. The simulation results showed that a lower porosity (θ) of the filling material made a higher separation factor, but a lower separation efficiency. The velocity of the product gas at the outlet of the separation column approximately had a linear relationship with θ5/3/(1-θ)2, which partly indicated the pore diffusion resistance. The mixed gas could contact the filling materials more sufficiently under a lower flow rate resulting in a lower protium concentration in the product gas. The separation column with a thin and long shape had a better separation performance and a lower product gas loss. |
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| Keywords: | Hydrogen isotope separation Tritium Displacement chromatography Experiment Numerical simulation |
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