Study on the Preparation of Depleted Deuterium Water by LPCE Isotope Separation
The liquid phase catalytic exchange(LPCE)method is a convenient and efficient hydrogen isotope separation method.In this paper,an experimental study on the preparation of low deuterium water by LPCE isotope separation was carried out.The results show that when the gas-liquid ratio is 1.5,as the temperature increases,the total volume mass transfer coefficient Kya value of the LPCE process for preparing low deuterium water will first increase and then decrease.When the temperature is higher than 60℃,The total volume mass transfer coefficient Kya value gradually becomes smaller,and the optimal reaction temperature is 60℃.For different exchange reaction temperatures,there are different optimal gas-liquid ratios for the preparation of low deuterium water by the LPCE method.As the gas-liquid ratio increases,The larger the total volume mass transfer coefficient Kya value is,but an excessively large gas-liquid ratio will cause gas-liquid entrainment or even flooding,reducing the exchange reaction efficiency.
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