Development of Supercritical Fluid Extraction and Rectification Processes

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  • Hashimoto Yoshiaki
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University
  • Ota Masaki
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University
  • Sato Yoshiyuki
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University
  • Ohizumi Yasushi
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University
  • Inomata Hiroshi
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University

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  • 天然機能性成分の分離濃縮を目的とした超臨界流体抽出–精留プロセスの開発
  • テンネン キノウセイ セイブン ノ ブンリ ノウシュク オ モクテキ ト シタ チョウリンカイ リュウタイ チュウシュツ : セイリュウプロセス ノ カイハツ

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Abstract

Supercritical fluid extraction with a rectification process was developed with a view to separation of trace components from natural materials. Fundamental experiments for separation of 7-hydroxyflavone from anthracene were carried out in a newly developed apparatus at a pressure of 12 MPa. When the respective temperatures of supercritical CO2+ethanol extraction and rectification were controlled at 333 K and 353 K, and with a feed ethanol concentration of 12 mol% and a CO2 flow rate of 1.4 L/min, only anthracene was recovered from the top of the rectifier. Rectification conditions were optimized by selecting a low feed ethanol concentration and by taking into consideration the phase separation of CO2-ethanol systems.

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