混合澄清槽的临界安全设计研究

Research on Criticality Safety Design of Mixer-settler

摘要: 混合澄清槽是乏燃料后处理生产过程中的一种广泛应用的萃取分离设备。从临界安全的角度首先对混合澄清槽的相态、混合状态、相口和浓度分布进行了敏感性分析，然后分析研究了混合澄清槽的尺寸对临界安全的影响，并给出了使Pu浓度在较大范围内变化时仍具有足够临界安全裕量的尺寸限值，为混合澄清槽的设计优化提供了参考。

Abstract: Mixer-settler separator is the widely used extraction equipment in spent fuel reprocessing plant. Sensitive Analysis of mixer-settler based on criticality safety is analyzed, including phase states, mixed state, phase interface and concentration distribution. And effect of the mixer-settler size on criticality safety is analyzed. Then the limiting size of mixer-settler is given which has adequate criticality safety allowance in a large range of plutonium concentration. This paper provides a reference for the design of mixer-settler.