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本文介绍了在30％TBP(磷酸三丁酯)/煤油-HNO_3体系中DBP(磷酸二丁酯)与硝酸锆络合物的形成对脉冲喷嘴板萃取柱液泛负荷的影响。实验研究结果表明:当有机相中DBP的浓度小于(2.0±0.2)×10~(-3)M时,其络合物对液泛负荷影响不大;当DBP浓度大于(2.0±0.2)×10~(-3)M时,液泛负荷明显下降。文章指出,在萃取过程中产生亲有机相的胶状沉淀物zr(OH)(NO_3)(DBP)_2,是导致体系过分乳化、易于液泛、操作容量降低的主要原因。本研究对探讨Purex过程污物形成机理、确定1A柱操作负荷有较大的实际意义。
This article describes the effect of DBP (dibutyl phosphate) and zirconium nitrate complex formation on the pan-load of pulsed nozzle plate extraction columns in a 30% TBP (tributyl phosphate) / kerosene-HNO3 system. The experimental results show that when the DBP concentration in the organic phase is less than (2.0 ± 0.2) × 10 ~ (-3) M, the complex has little effect on the liquid load. When the DBP concentration is more than (2.0 ± 0.2) × 10 ~ (-3) M, the liquid pan-load decreased significantly. The article points out that zr (OH) (NO_3) (DBP) _2, which is a pro-organic phase, is the main reason for the system’s over-emulsification, liquid pan-flooding and reduction of operation capacity. This study is to explore the Purex process dirt formation mechanism to determine the 1A column operating load has great practical significance.