Nonisothertmal design of fluid segments for precise temperature control in microreactors

Nobuaki Aoki, Kazuhiro Mae

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The present paper discusses effects the fluid segments size on temperature profile as well as mixing performance in microreactors under nonisothermal conditions. In the reactors, exothermic parallel-series reaction systems having different ratio of activation energy proceeds with the cooling through walls of a fixed temperature. Reactant fluids are fed by the form of fluid segment. The width of fluid segment determines the diffusive mixing rate, and the height of fluid segment affects the cooling rate of reactant fluids. When the activation energy of the reaction producing the desired product is higher than that of the by-product, an optimum height to maximize the yield of the desired product exists with a fixed fluid segment width. This result indicates that the fluid segment size can be determined from the mixing rate and cooing rate. The fluid segment height is then changed on the half way of reactor channel. Reactors where the height is small near the inlet region and enlarged suddenly after the region provides higher yield of the desired product than those where the height is fixed.

    Original languageEnglish
    Title of host publication2006 AIChE Annual Meeting
    Publication statusPublished - 2006 Dec 1
    Event2006 AIChE Annual Meeting - San Francisco, CA, United States
    Duration: 2006 Nov 122006 Nov 17

    Publication series

    NameAIChE Annual Meeting, Conference Proceedings

    Other

    Other2006 AIChE Annual Meeting
    CountryUnited States
    CitySan Francisco, CA
    Period06/11/1206/11/17

    Keywords

    • Arrangements and shapes of fluid segments
    • Microreactor
    • Mixing by molecular diffusion
    • Yield and selectivity of multiple reactions

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

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