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

A hydrogen isotope and separation system technology, applied in the field of nuclear technology application, can solve the problems of expensive palladium displacement chromatographic packing materials, complicated separation column regeneration treatment, complex system construction, etc., and achieve reduced construction costs, reduced system costs, and simple system structure Effect

Active Publication Date: 2019-02-01
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

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.

Method used

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

Examples

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example 1

[0049] Example 1: Hydrogen isotope separation in single cycle mode

[0050] In this example, 8 separation columns are selected, namely 1#, 2#, 3#, 4#, 5#, 6#, 7# and 8# separation columns, and each separation column is numbered (1#→2#→...→ 8#→1#) are connected end to end in a clockwise direction to form a closed loop; the turret on which the separation column is placed is placed in a low-temperature tank, and the low-temperature tank is cooled by liquid nitrogen. The separation column on the top of the turret is above the liquid level, and the rest of the The column is submerged below the liquid surface. The example system also includes raw material hydrogen storage tanks, light isotope storage tanks, heavy isotope storage tanks, tail gas storage tanks, flow meters, vacuum pumps, and pipes and valves connecting the above devices.

[0051] The separation column is a stainless steel bellows with an outer diameter of DN50, a wall thickness of 0.2mm, and a length of 1000. The pre...

example 2

[0062] Example 2: Natural Hydrogen Separation in Dual Cycle Mode

[0063] The rotary type low temperature hydrogen isotope separation system selected by example 2 is the same as example 1, and the specific separation method is as follows:

[0064] 1, carry out the operation of step (1)~(6) among the example 1, complete a cycle separation;

[0065] Ⅱ, repeat the operation of step (1)~(6) among the example 1, complete the second cycle separation;

[0066] Ⅲ. Connect the pipeline of the light isotope storage tank, move the rotating frame clockwise, so that the 7# separation column rises out of the liquid surface, the isotope in the column is desorbed, and the light isotope is discharged from the bottom of the column. The concentration is about 1ppm; connect the heavy isotope storage tank pipeline, move the rotating frame counterclockwise, so that the 1# separation column rises out of the liquid surface, and the heavy isotope is discharged from the top of the column. The collecte...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D59/26
CPCB01D59/26
Inventor 姚勇罗德礼文明王劲川胡俊陈闽邓立陈军陈克琳
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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