Enhanced mass transfer by liquid-liquid slug flow in microchannels for efficient extraction

Nobuaki Aoki, Teng Hong Khoo, Yoshihito Okubo, Kazuhiro Mae

    研究成果: Conference contribution

    抄録

    The internal circulation liquid-liquid slug flow in microchannels intensifies mass transfer between the two phases. In this work, effectiveness of the slug flow in a narrow channel for the extraction of phenol from dodecane to water was first investigated. Extraction based on slug flow and that based on emulsion generated by a micromixer was compared from the viewpoint of the total operation time for extraction and separation of the two phases. The results showed that the enhanced circulation flow in slugs by increasing flow rate enables rapid extraction. Moreover, large slug length compared with emulsion diameter allows instant separation of the two phases after the extraction. Required time for extraction based on emulsion is shorter than that based on slug flow. However, it takes more than a few hours to separate the two phases due to the small emulsion size (∼50 μm). Thus, the extraction based on slug flow is preferable to that based on emulsion from the viewpoint of the total operation time for the entire extraction process. Then, the effects of operating parameters such as ratio of oil phase volume flow rate to total flow rate and outlet channel i.d. were examined. The result showed that appropriate operating condition improves extraction efficiency in slug flow.

    本文言語English
    ホスト出版物のタイトルTopical Conference on Applications of Micro-Reactor Engineering 2007, Held at the 2007 AIChE Spring National Meeting
    出版社AIChE
    ページ111-117
    ページ数7
    ISBN(電子版)9781604233506
    出版ステータスPublished - 2014
    イベントTopical Conference on Applications of Micro-Reactor Engineering 2007, Held at the 2007 AIChE Spring National Meeting - Houston, United States
    継続期間: 2007 4月 222007 4月 27

    出版物シリーズ

    名前Topical Conference on Applications of Micro-Reactor Engineering 2007, Held at the 2007 AIChE Spring National Meeting

    Other

    OtherTopical Conference on Applications of Micro-Reactor Engineering 2007, Held at the 2007 AIChE Spring National Meeting
    国/地域United States
    CityHouston
    Period07/4/2207/4/27

    ASJC Scopus subject areas

    • プロセス化学およびプロセス工学
    • 産業および生産工学

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