Study of axial mixing, holdup and slip velocity of dispersed phase in a pulsed sieve plate extraction column using radiotracer technique

2009 ◽  
Vol 67 (7-8) ◽  
pp. 1248-1253 ◽  
Author(s):  
Ghiyas Ud Din ◽  
Imran Rafiq Chughtai ◽  
Mansoor Hameed Inayat ◽  
Iqbal Hussain Khan
Keyword(s):  
Slip Velocity ◽  
Extraction Column ◽  
Dispersed Phase ◽  
Sieve Plate ◽  
Radiotracer Technique

Study of holdup and slip velocity in an L-shaped pulsed sieve-plate extraction column

2019 ◽  
Vol 10 (1) ◽  
pp. 1-15
Author(s):  
Elham Mohammadi ◽  
Jafar Towfighi ◽  
Jaber Safdari ◽  
Mohammad H. Mallah
Keyword(s):  
Slip Velocity ◽  
Extraction Column ◽  
Sieve Plate

Dispersed Phase Holdup in a Tall and Low Plate Free Area Liquid Pulsed Sieve-Plate Extraction Column

2013 ◽  
Vol 48 (1) ◽  
pp. 175-182 ◽  
Author(s):  
S. Y. Khawaja ◽  
M. R. Usman ◽  
S. Khan ◽  
W. Afzal ◽  
N. A. Akhtar
Keyword(s):  
Extraction Column ◽  
Dispersed Phase ◽  
Sieve Plate ◽  
Free Area

scholarly journals Effect of Plate Wettability on Dispersed-Phase Holdup in a Pulsed Disc-and-Doughnut Solvent Extraction Column

2017 ◽  
Vol 35 (7) ◽  
pp. 573-585 ◽  
Author(s):  
Teobaldo Grabin ◽  
Kathryn H. Smith ◽  
Kathryn A. Mumford ◽  
Yong Wang ◽  
Geoffrey W. Stevens
Keyword(s):  
Solvent Extraction ◽  
Extraction Column ◽  
Dispersed Phase

scholarly journals Dispersed phase hold-up and characteristic velocity in a pulsed packed extraction column

2012 ◽  
Vol 18 (2) ◽  
pp. 255-262 ◽  
Author(s):  
Mehdi Asadollahzadeh ◽  
Jaber Safdari ◽  
Ali Haghighi-Asl ◽  
Meisam Torab-Mostaedi
Keyword(s):  
Physical Properties ◽  
Packed Column ◽  
Operating Conditions ◽  
Empirical Correlation ◽  
Extraction Column ◽  
Dispersed Phase ◽  
Characteristic Velocity ◽  
Operating Variables ◽  
Liquid Systems ◽  
Good Agreement

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.

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