Abstract:

A theoretical model was built to study the separation of hydrogen isotopes by the electrolysis-distillation process, and the separation performance of H₂/HD/HT was investigated.Enrichment behavior of both electrolysis and distillation was obtained: HDO and HTO concentration in electrolysis reached 8.35×10^-4 and 6.34×10^-6 respectively; HD and HT concentration in reboiler finally reached 0.033 and 6.06×10^-5 respectively.For the difference of separation factor for H/D and H/T, about 63.4% HTO stay in electrolysis cell which brought a poorer HT enrichment in reboiler compared with that of HD.As enrichment developed, deuterium(tritium) extraction efficiency decreased with time.

摘要： 为研究电解精馏级联氢同位素分离过程的规律性，建立了理论模型，并以H2/HD/HT为对象计算研究了系统分离行为。获得了电解和精馏过程系统的浓集行为： 电解池中HDO浓度从2.88×10-4 增长到 8.35×10-4， HTO浓度从1.0×10-6 增长到6.34×10-6；精馏柱再沸器中HD浓度达到0.033，HT浓度达到6.06×10-5。由于H/D和H/T电解池分离因子的差异，63.4%的HTO仍然留在电解池中，造成精馏柱再沸器中HT浓缩倍数不如HD。随时间的增长，脱氘（氚）率下降。