Direct Contact Heat Transfer in Melt Crystallization

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The heat transfer of melt crystallization with direct contact coolants such as gas, liquid and vaporized liquid was explored. Melt crystallization with direct contact coolants was carried out by crystallizing n-dodecanol from n-decanol - n-dodecanol mixture. The direct cooled crystallizers were capable of being operated either batch-wise or continuously. The superficial velocity of coolant: 3 × 10<SUP>–6</SUP>–2 × 10<SUP>–4</SUP> m/s for the vaporized liquid, 1 × 10<SUP>–5</SUP>–1 × 10<SUP>–4</SUP> m/s for the liquid and 5 × 10<SUP>–2</SUP>–2 × 10<SUP>–1</SUP> m/s for the gas, and the hold-up of coolant: 0.02–0.9 for the liquid and 0.01–0.25 for the gas were varied. The volumetric heat transfer coefficient obtained by direct contact cooling in the melt crystallizer was varied in the range of 0.1 to 100 kW/m<SUP>3</SUP>K. It was roughly proportional to the 1.5 to 1.8 power of the linear velocity of coolant. The semiempirical relations for correlating the volumetric heat transfer coefficient in the direct cooled melt crystallization were presented.

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 31(4), 527-535, 1998-08 

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10002065896
  • 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
    4541594
  • 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  NDL  J-STAGE 
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