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本文研究了无机离子交换剂亚铁氰化钛钾对模拟高放废液进行三柱串级的中试实验。结果表明:当模拟高放废液中Cs的浓度为1.15g/L,酸度为1.1mol/L,料液流速为2.0BV/h,交换柱穿透率为1%时,干交换剂的交换容量为0.38mmol/g,90%穿透时,交换容量可达0.77mmol/g。交换后的废交换剂用0.1mol/L的硝酸洗涤,卸柱时树脂仍保持良好的球型,说明交换剂亚铁氰化钛钾有良好的机械稳定性。
In this paper, a three-column cascade pilot scale experiment was carried out for the inorganic ion exchanger titanium potassium ferrocyanide to simulate high-level liquid waste. The results showed that when the concentration of Cs in simulated high-level liquid waste was 1.15g / L, the acidity was 1.1mol / L, the flow rate of feed liquid was 2.0BV / h and the exchange column penetration was 1%, the exchange of dry exchangers Capacity of 0.38mmol / g, 90% penetration, the exchange capacity of up to 0.77mmol / g. The exchanged waste exchangers were washed with 0.1 mol / L nitric acid, and the resin remained well spherical at the time of unloading, indicating that the exchange agent potassium titanium ferrocyanide had good mechanical stability.