On some properties of quasi-ideal cascades with losses at stages

Some regularities of mass transfer in quasi-ideal cascades with losses at their stages are investigated. Simple relationships to evaluate the influence of losses on the integral characteristics of quasi-ideal cascades under the condition of the low factors of losses are obtained. The optimum parameters of a match-abundance ratio cascade, which is a special case of a quasi-ideal cascade, under the condition of the minimum total flow in a cascade are found

The theory of isotope separation in cascades: problems and solutions

The status of the theory of isotope mixture separation in cascades is presented. The problems that limit the concept of an ideal cascade in the case of separation of binary mixtures and arbitrary separation factors at cascade stages are discussed. A new type of separating cascades which have a total flow less than the flow of the corresponding ideal cascade is presented. Furthermore, these “optimum” cascades may permit mixing concentrations and still produce higher cascade separative work. In the paper, a criterion to define efficiency for the separation of multi-isotope mixtures is analyzed. The analysis is based on the concept of the match-abundance ratio cascade (MARC). The approach has demonstrated that in order to obtain the optimum parameters of a single stage in a cascade it is necessary to minimize the linear combination of the inverse values of “partial separative powers” for all mixture components

On one analytical solution of the mass transfer problem in multistage installations with constant cut numbers

Separation of binary isotope mixtures in multistage installations consisting of separation elements with constant cut numbers and separation factors is considered. The analytical solution for component concentration distributions over a cascade with constant cut numbers is obtained. Major mass transfer regularities in such a kind of cascades are reviewed