METHOD OF RECOVERY OF LOW GRADE DEUTERIUM OXIDE HAVING IMPROVED PURITY

摘要

A method for re-collecting low grade deuterium oxide vapor having improved purity is provided to re-collect the deuterium oxide vapor having improved purity by collecting the low grade deuterium oxide vapor when a density of the deuterium oxide vapor is reduced in an outlet of an absorption tower. A method for re-collecting low grade deuterium oxide vapor having improved purity includes the steps of: absorbing the low grade deuterium oxide vapor to an absorbent of an absorption tower; performing elution to a movable phase by heating the absorbent of the previous step and detaching the deuterium oxide vapor from the absorbent; and classifying a moisture density of the eluted deuterium oxide vapor by the purity and collecting the deuterium oxide vapor when the moisture density of the eluted deuterium oxide vapor at the previous step is reduced from a saturated state.