GAO Yunhu, XU Zhihong, YU Zhaojun, et al. Concentration distribution of deuterium and oxygen-18 and its influence in heavy-oxygen water separation cascade[J]. CIESC Journal, 2014, (1): 213-219.
GAO Yunhu, XU Zhihong, YU Zhaojun, et al. Concentration distribution of deuterium and oxygen-18 and its influence in heavy-oxygen water separation cascade[J]. CIESC Journal, 2014, (1): 213-219.DOI: 10.3969/j.issn.0438-1157.2014.01.027.
Deuterium and oxygen-18 are enriched in a water distillation system for isotope separation. A new method is proposed to calculate concentration distributions of deuterium and oxygen-18 and the separation factor for oxygen-16 and oxygen-18. The method divides water into four lumps to simplify the complicated isotope exchange reactions. Reactive distillation module of ASPEN PLUS is used to complete the simulation. An example containing five distillation columns cascade indicates that the concentrations of deuterium and oxygen-18 reach 70.7% and 98.0%
respectively. With the increase of deuterium concentration in the last column
the separation factor for oxygen-16 and oxygen-18 αcal approaches αH216O/H218O rather than αD216O/D218O.