A Method for Measuring Bubble Diameter Distribution in Gas-Liquid Agitated Vessel under High Gas Hold-Up Using Real-Time High-Speed Image Processing System

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For an improved understanding of the gas-liquid contact system in an agitated vessel, it is very important to accumulate data about the bubble size distribution and interfacial area at all locations in the vessel. In this study, an advanced method is proposed for measuring the bubble volume and diameter equivalent to a sphere under high gas hold-up conditions based on the suction probe technique. This technique withdraws liquid containing bubbles from the vessel to the outside. It has already been elucidated in past studies by Greaves <I>et al</I>. The real-time high-speed image processing system, which was originally developed by the authors, is utilized as the measuring technique. It enables visualizing the entire image of a bubble distributed from about 30 <I>μ</I>m to 10 mm. Because this method can use a sampling tube with a diameter larger than that in conventional methods, it can be applied to viscous liquids and allows selection of sampling conditions without breaking the bubble during its flow in the tube, in contrast to conventional methods. The measured bubble diameter distribution data, specific surface area in various liquids, and examples of the relation between the conditions of agitation and the characteristics of the bubbles are presented. Using this method, quantitative information on bubbles in an aerated vessel with agitation is very accurate and is obtained in a very short time.

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 31(3), 366-373, 1998-06 

    The Society of Chemical Engineers, Japan

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被引用文献:  3件

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各種コード

  • NII論文ID(NAID)
    10002065521
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    4539059
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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