CIESC Journal ›› 2019, Vol. 70 ›› Issue (S2): 181-190.DOI: 10.119494/0438-1157.20190175

• Fluid dynamics and transport phenomena • Previous Articles     Next Articles

Application of micro particle real-time online analyzer in solid-liquid system measurement

Yong LI1(),Fei LIU2(),Haifeng DONG3,Xiangping ZHANG3,Jingrong CHEN1,Rencai LIU1,Shao JIN2,Zhanpeng WU2,Xiaodong WANG1()   

  1. 1. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
    2. Faculty of Science, Beijing University of Chemical Technology, Beijing 100084, China
    3. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2019-03-03 Revised:2019-04-22 Online:2019-09-06 Published:2019-09-06
  • Contact: Xiaodong WANG

微颗粒实时在线监测仪在固液体系测量中的应用

李勇1(),刘飞2(),董海峰3,张香平3,陈靖容1,刘仁材1,金劭2,吴战鹏2,王晓东1()   

  1. 1. 中国科学院大学材料科学与光电技术学院,北京 100049
    2. 北京化工大学理学院,北京 100084
    3. 中国科学院过程工程研究所绿色过程与工程重点实验室,北京 100190
  • 通讯作者: 王晓东
  • 作者简介:李勇(1991—),男,硕士研究生,liyong16@mails.ucas.ac.cn;刘飞(1993—),男,硕士研究生,1183563786@qq.com|李勇(1991—),男,硕士研究生,liyong16@mails.ucas.ac.cn;刘飞(1993—),男,硕士研究生,1183563786@qq.com
  • 基金资助:
    中国科学院装备研制项目(YZ201567);中国科学院国际合作局国际大科学培育专项“液态阳光”能源体系计划项目(211211KYSB20180020)

Abstract:

The micro particles’suspension and sedimentation processes were quantitatively studied by using a self-developed micro particle real-time online analyzer. After verifying the accuracy and reliability of the self-developed micro particle analyzer, three micro particles of different densities, the latex particle reference material, Al2O3 and ZrO2, were selected to conduct experiments. Through monitoring the suspension and gravity sedimentation processes, the particles’concentration and granularity distribution information were then obtained. The results show that the Al2O3 particles exhibit non-uniform distribution state even under super-critical suspension speed. And the particles’granularity and density play a significant role in solid-liquor separation during the transient process of gravity deposition.

Key words: particle size distribution, particulate processes, two-phase flow, online monitoring, resistance pulse

摘要:

使用自研的微颗粒实时在线监测仪对微颗粒在液相中的悬浮和沉降过程进行了在线定量测量研究。首先,通过与商用离线仪器Multisizer 4e的对比验证了自研的微颗粒监测仪实时、在线测量的可靠性。然后,选用了标准物质乳胶微球、Al2O3和 ZrO2三种密度不同的百微米量级的微颗粒,对磁力搅拌器中稳定转速下的悬浮特性以及搅拌停止后颗粒的重力沉降过程进行实时在线观测,得到了这两种情形下测量点的颗粒浓度和粒度分布信息。实验结果表明,即使搅拌速度超过临界悬浮转速,搅拌容器中的Al2O3颗粒仍存在不同程度的非均匀分布状态,呈现出一定的浓度和粒度分布。在重力沉降的瞬变过程中,固体颗粒的粒径和密度在固液两相分离的过程中有着显著的作用。

关键词: 粒度分布, 颗粒过程, 两相流, 在线监测, 电阻脉冲

CLC Number: