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The catalytic isotopic exchange module for hydrogen isotopes is described as a integrated system in the TRF of ICIT Ramnicu Valcea. Optimal functioning of the TRF states that for the cryogenic distillation column, gas input must have a controlled relative humidity and temperature. The catalytic exchange column can run for different input parameters of gas flow, liquid flow and temperature working regime. In situation of variable working temperature or inadequate thermostatic condition for the isotopic exchange column, demanded input parameters for the cryogenic distillation column must be obtain through different methods. One of the easiest and safety system equilibration methods requires the variation of refrigeration power of the condenser unit by the refrigeration agent flow variation. Changes in the refrigeration unit equilibrated the outlet temperature of the gas through the molsieve adsorber unit at certain values. Experimental data were obtained for different working regimes of the condenser unit installed in the catalyzed isotopic exchange system. The condensed liquid volume per time unit and the relative humidity at the condenser outlet were measured and reported in this paper. By controlling of the described parameters, considering also technical system design data and catalyst proprieties, for optimal isotopic column runs a thermic regime can be calculated and obtained. [ABSTRACT FROM AUTHOR]

It was analyzed the behavior of the cryogenic distillation column at the influence of an external factor. So, it was considered the non steady state for the column when exist a variation in the control system from the cooling circuit of the cryogenic distillation plant, which determine the fluctuation of the hydrogen level from the cryogenic distillation column condenser. The column has H height and NT theoretical stages, with the feed stream bicompound mixture of tritium and deuterium. The mathematical model for the simulation of the process is based on the equations of balance on the column, for the stages and for the condenser. The results were represented in specific diagrams and plots. Each parameter can offer information about the behavior of the distillation column operated at total reflux with sinusoidal oscillation of the liquid level in condenser. [ABSTRACT FROM AUTHOR]