ИСТИНА

Chemical isotope exchange in the water-hydrogen system is a perspective separation method for water waste detritiation. However, the realization of this process according to CECE technology with an electrolyzer as a lower flow reversal unit (LFRU) is energy-intensive, which limits its use in large-scale plants. The dual-temperature isotope separation scheme is significantly less energy consuming. The principle of method is the use of a “hot” column as LFRU. In this case, the separation efficiency is determined by the temperature difference in the “hot” and “cold” columns. For the water-hydrogen system, the possible temperature range depends on the catalyst activity. Usability of the new catalyst developed in the MUCTR for a two-temperature scheme was researched in this work. Work results and conclusions: 1. Using of the new catalyst makes possible the cold column operation below room temperature, and the value of HETP for a column with independent flows at a temperature Тcold = 285К does not exceed 16 cm. 2. It is shown that in the water-hydrogen system at atmospheric pressure, the process can be performed up to a temperature of Thot = 363K, providing a possible degree of tritium extraction of at least 0.45.