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  • 标题:Dispersed phase hold-up and characteristic velocity in a pulsed packed extraction column
  • 本地全文:下载
  • 作者:Mehdi Asadollahzadeh ; Jaber Safdari ; Ali Haghighi-Asl
  • 期刊名称:Chemical Industry and Chemical Engineering Quarterly
  • 印刷版ISSN:1451-9372
  • 出版年度:2012
  • 卷号:18
  • 期号:2
  • 页码:255-262
  • DOI:10.2298/CICEQ110828002A
  • 出版社:Association of the Chemical Engineers
  • 摘要:Dispersed phase hold-up has been measured in a 76.2 mm diameter pulsed packed column for four different liquid-liquid systems. The effects of pulsation intensity, phase ratio, and packing characteristic on the hold-up have been investigated under a variety of operating conditions. The dispersed phase axial hold-up shows a strong non-uniformity, depending on the operating conditions. The results indicated that the characteristic velocity approach is applicable to this type of extraction column for analysis of hold-up. An empirical correlation is derived for prediction of the hold-up in terms of operating variables, physical properties of the systems, and packing geometry. Good agreement between prediction and experiments was observed for all investigated operating conditions.
  • 关键词:Pulsed Packed Column; Hold-up; Characteristic Velocity; Slip Velocity
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