以正辛烷为介质离心分离碳同位素  

Centrifugal Separation of Carbon Isotopes Using n-octane as Processing Gas

作　　者：周明胜[1] 李梁[1] 徐燕博[1] 程维娜[1] 

机构地区：[1]清华大学工程物理系,北京100084

出　　处：《同位素》2012年第3期140-143,共4页Journal of Isotopes

基　　金：国家自然科学基金资助项目(10975087)

摘　　要：以正辛烷(C8H18)为分离介质,利用离心机进行了一系列单机分离实验,研究了其单机分离性能。通过质谱分析,得到了不同供料压强、滞留量下的基本全分离系数、分流比等单机参数:基本全分离系数接近或大于1.10,最高可达1.13。在单机实验数据的基础上,采用相对丰度匹配级联(MARC)的计算模型,对正辛烷离心分离级联的参数进行了初步估算,估算结果显示,采用联级分离可将13 C浓缩至约11%。Using n-octane as processing gas and single centrifuge as separator, a series of ex- periments were conducted to study the separation performance. Samples of each experiment were sent to mass spectrometer for analysis, and the overall separation factor and flow cut at different feed flow and holdup were obtained. The overall spearation factor were all close to or more than 1.10, and the maximum valuta can reach to 1.13. Based on the experimen- tal data, parameters of cascade for separating 13C were estimated using the MARC model. The calcuation results indicated that 13C can be neriched to about 11% by centrifuge cas- cade.

关 键 词：碳同位素 气体离心法 正辛烷 基本全分离系数 

分 类 号：TL92[核科学技术—核燃料循环与材料] O612.4[理学—无机化学]