Enrichment separation method of hydrogen isotopes through displacement chromatography

Abstract

The invention discloses an enrichment separation method of hydrogen isotopes through displacement chromatography. The enrichment separation method comprises the following steps: (1) reducing the temperature: making a molecular sieve column into a spiral coil, loading a container with liquid nitrogen, wholly immersing the molecular sieve column into the liquid nitrogen, and enabling the temperature of a molecular sieve to be maintained to be the temperature of the liquid nitrogen; (2) performing adsorption: enabling hydrogen to be introduced into the molecular sieve column, measuring the quantity of the hydrogen introduced into the molecular sieve, and after the gas pressure in the molecular sieve reaches to a definite pressure, stopping introducing the hydrogen; (3) performing warming for separation: upwards lifting the spiral molecular sieve column, so that the molecular sieve column is separated from the liquid surface of the liquid nitrogen, heating the molecular sieve column with air, and controlling the speed of the molecular sieve column being lifted out of the liquid surface of the liquid nitrogen to be 0.5-5 cm / min; and (4) performing detection and collection: oxidizing hydrogen into liquid water through an oxyhydrogen compositor at a rear end for the hydrogen discharged from the molecular sieve column, and then detecting the deuterium abundance in the liquid water through a magnetic mass spectrometer. According to the enrichment separation method of tritium through displacement chromatography disclosed by the invention, changes in the controlled process of reducing the temperature and raising the temperature have continuity, the hydrogen isotope separation efficiency is extremely high, and the separation effects are good.

Description

technical field [0001] The invention belongs to the field of separation and purification technology, and relates to an isotope separation method, in particular to a hydrogen isotope separation method. Background technique [0002] The nuclear fusion reactor of the superconducting tokamak is considered to be the nuclear fusion reactor with the most practical application potential. It can realize the green nuclear energy technology with extremely low radiation pollution. Countries all over the world have invested a lot of manpower and material resources in applied research. Deuterium and tritium, hydrogen isotopes used as fuel for nuclear fusion reactors, are in great demand in research applications, and once the thermonuclear fusion reactor is put into production, the existing production of deuterium and tritium will become a limit to the application of thermonuclear reactors The key factor. [0003] Hydrogen isotopes deuterium and tritium are generally uniformly dispersed i...

AI Technical Summary

Problems solved by technology

The method of the present invention can efficiently and quickly separate hydrogen isotopes—deuterium and tritium from natural pure hydrogen, has the characteristics of simple, convenient and high-efficiency implementation, and can effectively improve the problem of difficult separation and enrichment of deuterium and tritium. Provide sufficient reaction fuel

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