H-D体系的气液催化交换实验研究

采用Pt-SDB疏水催化剂与亲水填料混装,考查了氢同位素氘从气、液两相间相互交换过程的影响因素。结果表明:随着天然水流量的增大,开始时催化交换效率增大,而后趋于平稳;在相同的液体流量下,随着气体流量的增大,催化交换效率减小;随着温度的升高,催化交换效率增大;在同一温度下,随着液体流量的增大,气相总传质系数(Kya)没有什么明显的变化,而反应温度对Kya影响显著,高、低气体流速下两者的活化能相差很小。

Research on the Hydrogen-Deuterium Isotope Exchange Reaction(In Chinese)

The influencing factors of the hydrogen isotopic deuterium from gas to liquid phase are examined by mixed Pt-SDB hydrophobic catalyst and hydrophilic packing.The results show that the exchanged efficiency increases with increasing liquid flux,but the trend is slow down when the liquid flux attains some level.In the same liquid flux,the exchanged efficiency decreases with increasing gas flux,the exchanged efficiency increases with increasing temperature.In the same temperature,the volume transfer coefficient cannot obviously be changed with increasing liquid flux,the influence of the volume transfer coefficient increases with increasing temperature,but the discrepancy of the activation energies between the conditions of high and low gas flux little.