Simulation of Combined Electrolysis Catalytic Exchange With HD/H₂O and HT/H₂O Systems

Based on two-step isotope exchange process, a theoretical model incorparating vapour effect for combined electrolysis catalytic exchange (CECE) system was constituted. The separation performance of HD/H₂O and HT/H₂O systems was calculated by using this model. The increase of mass transfer coefficient can notebly improve exchange system’s performance. The deuterium enrichment in electrolysis cell will finally cause a poor deuterium extraction efficiency, and this conflict indicates that dynamic behavior of CECE is a main concern in the choice of operating mode and the connection with cascade post-enrichment sysytem, and it should be an important factor in designning catalytic exchange column.