Process Systems Engineering. Measurement of Cooling Coil Film Heat Transfer Coefficient with Polymer Reaction Proceeding in a Stirred Batch Reactor.

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  • Yamamoto Kazumi
    Research and Development Center, Soken Chemical & Engineering Co., Ltd.
  • Nishi Kazuhiko
    Department of Material Science and Chemical Engineering, Yokohama National University
  • Kaminoyama Meguru
    Department of Material Science and Chemical Engineering, Yokohama National University
  • Kamiwano Mitsuo
    Department of Material Science and Chemical Engineering, Yokohama National University

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  • プロセスシステム工学　重合槽内における反応進行にともなう冷却コイルの境膜熱伝達係数の経時変化
  • ジュウゴウソウナイ ニ オケル ハンノウ シンコウ ニ トモナウ レイキャク

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Abstract

In radical additional solution polymerization, the viscosity increases with reaction progress. It is important to evaluate beforehand the cooling capacity of the reactor, which worsens with the process.<BR>In this study, a stirred batch reactor with both a paddle and a helical screw impeller were studied, and measurements were made for the dynamic changes of the film heat transfer coefficient of the cooling coil with progress of the polymer reaction. We found the change could be evaluated by the calculating heat balance of the generated heat, the viscous dissipation energy and the sensible heat change under conditions of monomer conversion and changing viscosity.

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