Abstract
According results of a theoretical analysis of the countercurrent column operation for the liquid phase catalytic exchange (LPCE) between hydrogen and water in a mode with independent flows of hydrogen and water, it is shown that there are temperature-dependent maximum values of the molar ratio of hydrogen and water flows, at which the separation performance of the column towards isotope mixtures of protium–tritium and protium–deuterium diminishes. Options for the operation of a chemical treatment column were experimentally studied provided that water vapor condensate is returned to the column from the output steam–gas flow or without it. The experimental results are consistent with the theoretical analysis performed.
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ACKNOWLEDGMENTS
The author expresses his sincere gratitude to the graduate students of the Department of Isotope Technology and Hydrogen Energy of Mendeleev University of Chemical Technology of Russia as well as the staff of this department―A.V. Ovcharov, who developed the calculation program IsExDOI, which adequately simulates the chemical isotope exchange process in the water–hydrogen system in various options of its implementation, and V.A. Tkachenko, who conducted an experimental test of the operating modes of a chemical treatment column with and without returning condensate.
Funding
The work was carried out within the framework of the development program of Mendeleev University of Chemical Technology of Russia “Priority-2030.”
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Translated from Radiokhimiya, No. 5, pp. 440–446, October, 2023 https://doi.org/10.31857/S0033831123050063
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Rozenkevich, M.B. Analysis of Operating Modes of a Countercurrent Column for the Chemical Isotope Exchange between Hydrogen and Water with Independent Flows of Water and Hydrogen. Radiochemistry 65, 560–566 (2023). https://doi.org/10.1134/S1066362223050065
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DOI: https://doi.org/10.1134/S1066362223050065