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Abstract <p>The article presents the results of determining the mass-transfer characteristics of three membrane-type contact devices of various designs, which can be used to solve problems of detritiation of low-level aqueous waste. All devices used a single domestic tubular membrane TF-4SK, rolled into a spiral, with a hydrophobic catalyst RCTU-3SM placed around the membrane. The high efficiency of devices with a single membrane is demonstrated with much smaller weight and size parameters compared to a classic membrane-type contact device. With a fivefold increase in the vapor-gas flow rate, the mass-transfer coefficient in membrane contact devices increases up to threefold. The possibility of operation of contact devices with tubular membranes at a linear velocity of the vapor-gas flow of more than 5 m/s, which is more than an order of magnitude higher than for traditional packed contact devices, is demonstrated. The membrane contact devices presented in the article can be used to create compact, high-performance separation units for processing tritium-containing low-level aqueous waste generated during the operation of power plants.</p>

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Isotopic Exchange between Hydrogen and Water in Contact Devices with Tubular Membranes

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • I. L. Rastunova,
  • A. Yu. Chebotov,
  • I. A. Vorakso,
  • M. B. Rozenkevich

摘要

Abstract

The article presents the results of determining the mass-transfer characteristics of three membrane-type contact devices of various designs, which can be used to solve problems of detritiation of low-level aqueous waste. All devices used a single domestic tubular membrane TF-4SK, rolled into a spiral, with a hydrophobic catalyst RCTU-3SM placed around the membrane. The high efficiency of devices with a single membrane is demonstrated with much smaller weight and size parameters compared to a classic membrane-type contact device. With a fivefold increase in the vapor-gas flow rate, the mass-transfer coefficient in membrane contact devices increases up to threefold. The possibility of operation of contact devices with tubular membranes at a linear velocity of the vapor-gas flow of more than 5 m/s, which is more than an order of magnitude higher than for traditional packed contact devices, is demonstrated. The membrane contact devices presented in the article can be used to create compact, high-performance separation units for processing tritium-containing low-level aqueous waste generated during the operation of power plants.