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用实验方法研究了 3 0 % TRPO(混合三烷基氧膦 ) -煤油 /硝酸体系在脉冲喷嘴板萃取柱中水相连续和有机相连续时的水力学特性。结果表明 ,水相连续时 ,液泛发展较快 ,液泛通量小 ,有机相连续时 ,液泛发展较慢 ,液泛通量大。两种情况下 ,水力学参数和液泛通量均能较好地用关联式进行关联或计算。随脉冲强度改变 ,特性速度的变化规律基本相同 ,且可用公式 V0 /( cm.s-1 ) =9.69exp[-0 .475 Af/( cm.s-1 ) ]进行关联 ,式中 V0 为液滴特性速度 ,A为脉冲振幅 ,f为脉冲频率。研究表明 ,有机相连续时 ,与其它结构参数的喷嘴板相比 ,标准喷嘴板脉冲萃取柱具有操作通量大和稳定性好的优点
The hydraulics characteristics of a 30% TRPO (mixed trialkylphosphine oxide) - kerosene / nitric acid system continuous with continuous aqueous phase and organic phase in a pulsed nozzle plate extraction column were studied experimentally. The results show that when the water phase is continuous, the flooding develops rapidly and the liquid flooding flux is small. When the organic phase is continuous, the flooding develops slowly and the flooding flux is large. In both cases, the hydraulic parameters and flooding fluxes can be better correlated or calculated using correlations. With the change of pulse intensity, the change of characteristic velocity is basically the same, and can be related by the formula V0 / (cm.s-1) = 9.69exp [-0.475 Af / (cm.s-1)], Drop velocity, A is the pulse amplitude, f is the pulse frequency. The results show that, when the organic phase is continuous, the standard nozzle plate pulse extraction column has the advantages of large operating flux and good stability compared with other structural parameters of the nozzle plate