Recoveries of Deuterium from the Separation of water-isotope Mixture in batch-type Thermal Diffusion Columns under unsteady-state Operation

非穩態操作下於批式熱擴散塔中自水同位素回收重氫

葉和明(Ho-Ming Yeh)

《Journal of the Chinese Institute of Chemical Engineers》 38卷5&6期 (2007/11) Pp. 495-499

摘要

本文旨在先探討水同位素(H2O-HDD-D2O)在批式熱擴散塔中之分離，進而估計HDD與D2O中回收重氫(D)之量。結果發現：當重水各進料質量濃度分率為0.22時，重氫回收率最大。

並列摘要

Heavy water (D2O) is the most feasible moderator and coolant in nuclear-fission reactors while deuterium (D) will be the nuclear fulel for thermonuclear fusion in the distant future. The recoveries of deuterium in D2O and HDO from the separation of water-isotope mixture (H2O-HDO-D2O) by thermal diffusion has been estimated. First, the degrees of separation for each component of Water-isotope mixture in thermal diffusion columns were predicted, then the recoveries of deuterium in each component were estimated from the molecule weights. It was found that the maximum recovery of deuterium might be obtained when the feed concentration of D2O is 0.22 mass fraction.

並列關鍵字

Deuterium recovery ； Thermal diffusion ； Water isotope ； Unsteady-state operation