Droplet Coalescence at A Flat Interface in Liquid-Liquid Systems

邰德荣; G.W.Stevens; H.R.C.Pratt

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Droplet Coalescence at A Flat Interface in Liquid-Liquid Systems

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- Droplet Coalescence at A Flat Interface in Liquid-Liquid Systems
- CIESC Journal Issue 1, (1991)
- 作者机构：
  
  清华大学核能技术设计研究院,澳大利亚墨尔本大学化学工程系,澳大利亚墨尔本大学化学工程系 ,墨尔本,墨尔本,北京
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 February 1991，
  
  Published：25 February 1991
- 稿件说明：
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邰德荣, G.W.Stevens, H.R.C.Pratt. Droplet Coalescence at A Flat Interface in Liquid-Liquid Systems[J]. CIESC Journal, 1991, (1).
DOI：

邰德荣, G.W.Stevens, H.R.C.Pratt. Droplet Coalescence at A Flat Interface in Liquid-Liquid Systems[J]. CIESC Journal, 1991, (1). DOI：

摘要

众所周知

分散相液滴的大小影响液液萃取设备的处理能力和传质效率.Garg和Pratt对脉冲筛板柱的研究及Hamilton和Pratt对填料柱的研究均表明

液滴大小受液滴聚结和破碎速率控制.聚结速率对混合澄清槽的澄清室设计极为重要

并已成为许多科学工作者的研究课题.如Jeffreys等对连续澄清器性能的宏观研究及水平界面上单液滴聚结特性的研究等.单液滴研究有助于判别聚结时作用在液滴上的一些重要的作用力.一般说

聚结过程包括以下步骤:

Abstract

This paper presents a study of the effect of inorganic electrolytes on the rate of coalescence of organic droplets in an aqueous continuous phase. It was found that the addition of ionizing salts to the aqueous phase resulted in an increase in coalescence time at a flat interface with droplets of polar organic liquids

such as butyl acetate. In contrast

no change in coalescence time was observed for non-polar droplets such as heptane. These results are discussed in relation to existing theories of drop coalescence

and a qualitative explanation of the phenomenon is proposed in terms oi an increase in the intertacial viscosity.

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