Study on Liquid Catalytic Isotopic Exchange of H_2O-H_2

The process conditions are experimentally studied for H2O-H2 liquid catalytic isotopic exchange with Pt-SDB as hydrophobic catalyst. The results show that the pressure drop of the catalytic exchange bed is caused mainly by temperature and hydrogen flow rate. The efficiency of catalytic exchange reaction is high with a packing ratio of 1∶4 of hydrophobic catalyst and hydrophilic packing. The height of a mass transfer unit (HTU) decreases with increasing temperature, but the trend is slow down when the temperature is above 60 ℃. The HTU increases with increasing the mole rate of hydrogen flow and the diluted heavy water flow.