Open AccessDispersed phase hold-up and characteristic velocity in a pulsed packed extraction column
Author(s) -
Mehdi Asadollahzadeh,
Jaber Safdari,
Ali Haghighi Asl,
Meisam TorabMostaedi
Publication year - 2012
Publication title -
chemical industry and chemical engineering quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.189
H-Index - 26
eISSN - 2217-7434
pISSN - 1451-9372
DOI - 10.2298/ciceq110828002a
Subject(s) - packed bed , materials science , extraction (chemistry) , phase (matter) , mechanics , column (typography) , intensity (physics) , analytical chemistry (journal) , chromatography , chemistry , optics , mathematics , geometry , physics , organic chemistry , connection (principal bundle)
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