METHOD AND DEVICE FOR OXYGEN ISOTOPE CONCENTRATION Russian patent published in 2010 - IPC B01D59/34 

FIELD: process engineering.

SUBSTANCE: invention can be used in chemical industry and medicine. Ozone diluted by gas, concentration of ozone is maintained at low level under conditions whereat inert gas solidifies. Ozone molecules containing ¹⁷O or ¹⁸O, ie stable isotope of oxygen, are subjected to photo stabilisation in stable and selective conditions to produce oxygen molecules. This allows efficient and continuous concentration of ¹⁷O or ¹⁸O in oxygen molecules. At the stage of ozone photo dissociation mixed gas containing CF₄ and ozone is irradiated by light to selectively dissociate tagged ozone isotopologs, containing required oxygen isotope in ozone, into oxygen molecules. Produced mixed gas entrapped, oxygen molecules are separated from not dissociated ozone molecules and CF₄ in mixed gas being entrapped by means of low-temperature dry distillstion. Oxygen isotopes are concentrated in separate oxygen molecules at the stage of oxygen isotopes concentration.

EFFECT: efficient and continuous concentration of isotopes in oxygen molecules.

13 cl, 4 dwg