Analysis of separation characteristics of low temperature distillation system in fuel supply and exhaust system for nuclear fusion reactors

The most promising method for the hydrogen isotope separation in the fuel supply and exhaust system for nuclear fusion reactors is low temperature distillation method. In order to establish the design and operation methods for low temperature distillation towers, it is necessary to perform the experimental research and theoretical analysis for long period. The author has studied on the analysis model of low temperature distillation towers. The problem of low temperature distillation is that the experimental data of high accuracy are difficult to obtain because of many restrictions on the measurement. Accordingly, the analysis depends on the estimation by computer aid. In hydrogen isotopic separation, it is important to estimate accurately the amount of components existing in very small amount in output flow. The latent heat of evaporation is different according to the components. The decay of tritium generates heat. Hydrogen isotope system deviates from the law of Raoult. The effect of the three factors on the steady characteristics of a tower was examined, and the deviation from the law of Raoult affected most. (Kako, I.)