侧线反馈对H_2/HD/D_2低温精馏分离的影响  

Sidestream Effect on Separation of H_2/HD/D_2 by Cryogenic Distillation

作　　者：夏修龙[1] 任兴碧[1] 傅中华[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《核化学与放射化学》2008年第4期227-231,共5页Journal of Nuclear and Radiochemistry

基　　金：中国工程物理研究院科技发展基金资助项目(2007B02005)

摘　　要：为研究带侧线反馈的低温精馏氢同位素分离规律性,建立了带侧线反馈的低温精馏氢同位素分离计算方法,并以H2/HD/D2体系进行了计算分析。计算结果表明,侧线反馈对分离性能影响显著,再沸器中以D2为主,氘丰度可达到0.90,而无侧线反馈情况下,再沸器中以HD为主,氘丰度不超过0.50;有侧线反馈条件下,系统运行约40 h HD向D2的转化达到峰值,而在无侧线情况下,HD浓缩在40 h已达到饱和;当侧线采出比为1时,脱氘率最高。A computational model was constructed to study the separation of hydrogen isotopes by cryogenic distillation with sidestream feedback and a computational analysis was made for H2/HD/D2 system. The results show a remarkable influence of sidestream feedback on separation performance. D2 is dominant in reboiler and deuterium abundance may reach 0.90 with sidestream feedback while HD is dominant in reboiler and deuterium abundance can not exceed 0.50 without sidestream feedback. A peak of transformation of HD to D2 appears after about 40 h with sidestream while enrichment of HD is saturated without sidestream at the same time. The efficiency of deuterium stripping is best when a sidestream ratio is 1.

关 键 词：氢同位素分离 低温精馏 侧线反馈 

分 类 号：O643.14[理学—物理化学]