CIESC Journal

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超临界流体萃取塔的流体力学和传质性能

石冰洁; 张卫东; 张泽廷; 于恩平   

  1. College of Chemical Engineering, Beijhng University of Chemical Technology, B eijing
    100029, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-12-28 发布日期:2002-12-28
  • 通讯作者: 石冰洁

Hydrodynamics and Mass Transfer Performance in Supercritical Fluid Extraction Columns

SHI Bingjie; ZHANG Weidong; ZHANG Zeting; YU Enping   

  1. College of Chemical Engineering, Beijhng University of Chemical Technology, B eijing
    100029, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-12-28 Published:2002-12-28
  • Contact: SHI Bingjie

摘要: New models for describing hydrodynamics and mass transfer performance in supercritical
fluid extraction columns were proposed.Those models were proved by experimental data, which
were obtained in supercritical fluid extraction packed column, spray column and sieve tray
column respectively. The inner diameter of those columns are φ25 mm. These experimental
systems include supercritical carbon dioxide-isopropanol-water and supercritical carbon
dioxide-ethanol-water, in which supercritical carbon dioxide was dispersed phase, and
another was continuous phase. The extraction processes were operated with continuous
conntercurrent flow. The predicted values are agreed well with ex-perimental data.

关键词: supercritical fluid extraction;hydrodynamics;mass transfer

Abstract: New models for describing hydrodynamics and mass transfer performance in supercritical
fluid extraction columns were proposed.Those models were proved by experimental data, which
were obtained in supercritical fluid extraction packed column, spray column and sieve tray
column respectively. The inner diameter of those columns are φ25 mm. These experimental
systems include supercritical carbon dioxide-isopropanol-water and supercritical carbon
dioxide-ethanol-water, in which supercritical carbon dioxide was dispersed phase, and
another was continuous phase. The extraction processes were operated with continuous
conntercurrent flow. The predicted values are agreed well with ex-perimental data.

Key words: supercritical fluid extraction, hydrodynamics, mass transfer