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

Yong LI; Fei LIU; Haifeng DONG; Xiangping ZHANG; Jingrong CHEN; Rencai LIU; Shao JIN; Zhanpeng WU; Xiaodong WANG

doi:10.119494/0438-1157.20190175

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

Fluid dynamics and transport phenomena | 更新时间：2020-06-24

- Application of micro particle real-time online analyzer in solid-liquid system measurement
- CIESC Journal Vol. 70, Issue S2, Pages: 181-190(2019)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.119494/0438-1157.20190175
  CLC： TH 70
- Received：03 March 2019，
  
  Revised：2019-04-22，
  
  Published：05 September 2019
- 稿件说明：
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李勇, 刘飞, 董海峰, 张香平, 陈靖容, 刘仁材, 金劭, 吴战鹏, 王晓东. 微颗粒实时在线监测仪在固液体系测量中的应用[J]. 化工学报, 2019, 70(S2): 181-190

LI Yong, LIU Fei, DONG Haifeng, ZHANG Xiangping, CHEN Jingrong, LIU Rencai, JIN Shao, WU Zhanpeng, WANG Xiaodong. Application of micro particle real-time online analyzer in solid-liquid system measurement[J]. CIESC Journal, 2019, 70(S2): 181-190
李勇, 刘飞, 董海峰, 张香平, 陈靖容, 刘仁材, 金劭, 吴战鹏, 王晓东. 微颗粒实时在线监测仪在固液体系测量中的应用[J]. 化工学报, 2019, 70(S2): 181-190 DOI： 10.119494/0438-1157.20190175.

LI Yong, LIU Fei, DONG Haifeng, ZHANG Xiangping, CHEN Jingrong, LIU Rencai, JIN Shao, WU Zhanpeng, WANG Xiaodong. Application of micro particle real-time online analyzer in solid-liquid system measurement[J]. CIESC Journal, 2019, 70(S2): 181-190 DOI： 10.119494/0438-1157.20190175.

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、Al

和 ZrO

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Al

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。

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

and ZrO

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 Al

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.

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