Rotary low-temperature hydrogen isotope separation system and separation method thereof

Abstract

The invention discloses a rotary low-temperature hydrogen isotope separation system and a separation method thereof, which solve the complicated construction, complicated parameter control, and high operation cost, or helium gas supply requirement, hydrogen and helium separation, and complex separation column regeneration treatment, or high cost of palladium displacement chromatogram filling material and easy failure in the prior art. The separation system includes a cryogenic tank, a reversing frame, a separation column, a raw material hydrogen-storage tank, a light isotope storage tank, a heavy isotope storage tank, a vacuum pump, and an exhaust gas storage tank. The separation method is characterized in that a separation column absorbing the raw material hydrogen to gradually separate the liquid nitrogen liquid level to desorb the hydrogen isotope to complete rearrangement of hydrogen isotope in other separation columns; and the light and heavy isotopes can be finally collected respectively from the far and near ends of the loop. The system creatively utilizes the technical principle of a simulated moving bed, the hydrogen isotope can continuously circulate in the closed loop separation loop, the heavy isotope concentration gradually decreases from the near end to the far end where the desorption occurs in the separation loop, and the concentration gradient of the heavy isotope is continuously increased with the adsorption / desorption frequency.

Description

technical field [0001] The invention relates to the application field of nuclear technology, in particular to a rotary low-temperature hydrogen isotope separation system and a separation method. Background technique [0002] Hydrogen isotope separation is one of the core technologies of the fusion reactor deuterium-tritium nuclear fuel cycle. Through isotope separation, not only can a large amount of unburned deuterium-tritium gas be reused in the operation of the reactor, but also the release of tritium to the environment during the operation of the fusion reactor can be realized. effective control of the quantity. To meet the large-scale hydrogen isotope separation requirements for future fusion reactor operations, a series of hydrogen isotope separation technologies have been developed, including low temperature distillation (LHD), low temperature chromatography (GC), and palladium displacement chromatography. [0003] Cryogenic rectification uses the difference in boili...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a rotary low-temperature hydrogen isotope separation system and separation method to solve the problem of complex construction of the low-temperature rectification system in the prior art, complicated parameter control and high operating costs, and low-temperature chromatography requires helium gas supply , Hydrogen and helium separation and separation column regeneration are complex, palladium displacement chromatography packing is expensive and prone to failure, etc.

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