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利用色谱分离的速率理论分析了贮氚老化影响钯氢化物中恒流速氢氘交换性能的原因,并利用塔板理论模拟了氢氘交换流出曲线,同时,实验对比了未贮氚老化与贮氚老化1.6年钯的氢氘交换流出曲线。理论模拟结果表明:贮氚老化后,钯氢化物氢氘交换反应的塔板数n减少,塔板高度H增加,交换反应的平衡时间增长,氢氘交换流出曲线趋于平缓,氢氘交换性能下降。而塔板高度的增加,是由于衰变3He滞留在钯材料中,导致氢同位素在老化钯中的扩散受阻,同时使得钯的氢同位素分离因子改变。实验对比结果表明:恒流速状态下,贮氚老化1.6年钯的氢氘交换流出曲线较之未贮氚老化钯变得平缓,氢氘交换性能下降。理论模拟与实验结果符合较好。
Based on the theory of rate of chromatographic separation, the reasons for the effect of tritium aging on the hydrogen-deuterium exchange performance in palladium hydride at constant velocity were analyzed, and the outflow curve of hydrogen-deuterium exchange was simulated by the plate theory. Meanwhile, the tritium- Aging 1.6 years palladium hydrogen deuterium exchange outflow curve. The theoretical simulation results show that the number of trays of hydrogen-hydrogen-deuterium exchange reaction of palladium hydride decreases after the storage of the tritium tritium, the height of the trays increases, the equilibrium time of the exchange reaction increases, the hydrogen-deuterium exchange outflow curve tends to be gentle, decline. The increase in plate height is due to decay 3He retention in the palladium material, resulting in the diffusion of hydrogen isotopes in the aged palladium block, while making the palladium hydrogen isotope separation factor changes. Experimental results show that the hydrogen-deuterium exchange outflow curve of palladium aged with tritium storage is steadier than that of non-tritium-packed aged palladium, and the hydrogen-deuterium exchange performance is decreased under constant flow rate. The theoretical simulation and experimental results are in good agreement.