相对丰度匹配的网格级联分离多组分同位素混合物

Separation of Multi-component Isotope Mixtures by Matched Abundance Ratio Net Cascade

本文提出了一种仅两个取料的网格级联——相对丰度匹配的网格级联。其上半部分是理想网格级联,下半部分是有回流的网格级联。只要在回流点处某两种关键组分的分离是对称分离,这两种组分即能满足丰度无混合的条件。给出了相对丰度匹配网格级联的计算方法,并针对分离多组分同位素混合物的不同情况,对该种网格级联的分离性能进行了讨论。结果表明,相对丰度匹配网格级联能很好地实现同位素的分离,在级联总流量相同的情况下,能达到不亚于常规相对丰度匹配级联的分离效果。

A net cascade with two withdraws named as matched abundance ratio net cas‐cade was proposed .The upper part is an ideal net cascade ,and the lower part is a net cascade with recirculation . If the separation of two key components is symmetrical , their abundances will not mix at inflow points .The computation method of the matched abundance ratio net cascade was given ,and the separation performance was discussed through separating multi‐component isotope mixtures in different cases . The results show that the matched abundance ratio net cascade can separate mixtures well ,and its separation performance is no less than conventional matched abundance ratio cascade in case of same total flow s .