混合澄清槽中硝酸传质对分散相存留分数的影响
Influence of Mass Transfer on Holdup in Mixer Settler
王博 1武沛 1高明媛 1刘继连 1秦永泉1
作者信息
- 1. 中国核电工程有限公司,北京 100840
- 折叠
摘要
混合澄清槽是一种重要的液-液萃取设备,分散相存留分数是混合澄清槽混合室中的一个重要水力学参数.传质条件下分散相存留分数的变化情况是一个重要的研究方向.针对 2套不同尺寸的混合澄清槽开展了水力学和硝酸传质实验.获得了水力学条件下泵轮转速、两相流比、料液停留时间对于分散相存留分数影响的实验结果.在传质条件下,发现 2 套混合澄清槽的级效率均＞90%.该研究条件下传质通量集中在 10-5～10-4数量级,在该数量级上传质通量很难对水力学性能产生影响,上述计算结果解释了传质条件下分散相存留分数未出现明显变化的根本原因.
Abstract
The mixer settler is an important equipment on liquid-liquid extraction,and the holdup of dispersed phase is an important hydraulic parameter in the mixing chamber of the mixer settler.The variation of dispersed phase holdup under mass transfer conditions is an important research direction.In this paper,hydraulic and nitric acid mass transfer experiments on two sets of mixer settler with different scales were conducted.Experimental results on the effects of rotating speed,two-phase flow ratio,and residence time on the holdup of dispersed phases under hydraulic conditions were obtained.Under mass transfer conditions,it was found that the stage efficiency of both sets of mixer settler was greater than 90%.Under the conditions of this study,the mass transfer flux was concentrated in the order of 10-5 to 10-4,and it was difficult for the mass transfer flux to affect the hydraulic performance at this order of magnitude.The above calculation results could explain the fundamental reason why the holdup of dispersed phase did not show significant changes under mass transfer conditions.
关键词
混合澄清槽/硝酸传质/分散相存留分数/传质通量Key words
Mixer settler/Nitric acid mass transfer/Holdup/Mass transfer flux引用本文复制引用
基金项目
中核集团青年英才(启明星)项目(CNPE-KY23100)
出版年
2024
NETL
NSTL
万方数据