Effect of Structural Parameters on Drop Size Distribution in Pulsed Packed Columns

Samani, Mahmoud Gholam; Safdari, Jaber; Asl, Ali Haghighi; Torab‐Mostaedi, Meisam

doi:10.1002/ceat.201300837

Cited by 24 publications

(9 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, hold up will increase with higher rate. 14,26 The similar results have been reported for this extraction column by some authors. 15,27 The inuence of continuous phase supercial velocity on the hold-up is shown in Fig.…”

Section: Dispersed Phase Hold-upsupporting

confidence: 90%

See 1 more Smart Citation

Hold-up and flooding characteristics in a perforated rotating disc contactor (PRDC)

et al. 2015

View full text Add to dashboard Cite

Dispersed phase hold-up and flooding behavior were investigated in a pilot plant scale perforated rotating disc contactor (PRDC) using three different liquid-liquid systems. The influence of various operational parameters including rotor speed, continuous and dispersed phases flow rates on flooding velocities and hold-up have been studied. Changes in the continuous phase velocity has a minor effect on dispersed phase hold-up while increasing dispersed phase flow rate and rotor speed results in an increase in dispersed phase hold-up. Moreover, based on physical properties of liquid systems and operating conditions two empirical correlations were derived for flooding point and dispersed phase hold-up. The proposed empirical correlations are thenvalidated through comparing with experimental data. Therefore, due to lack of experimental data on this type of column, these predictive empirical correlations can be used for accurate design of perforated rotating disc contactor.

show abstract

Section: Dispersed Phase Hold-upsupporting

confidence: 90%

“…Consequently, hold up will increase with higher rate 14,26 . The interfacial energy which is responsible for keeping drop surface is lower in low value of interfacial tension.…”

Section: Dispersed Phase Hold-upmentioning

confidence: 99%

Hold-up and flooding characteristics in a perforated rotating disc contactor (PRDC)

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The pulsed extraction columns are among the extractors that avoid frequent maintenance, making remote operation possible. Moreover, they are designed in packed, perforated-plate, and disc and doughnut forms [4][5][6]. In another classification, the pulsed extraction columns can be divided into two major categories: vertical columns and horizontal columns.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Concentration Profiles in an L‐Shaped Pulsed Extraction Column

et al. 2019

Self Cite

View full text Add to dashboard Cite

The L-shaped extraction pulsed plate column is believed to be able to perform under operating conditions between those of the vertical and the horizontal pulsed plate columns. It has an extraction efficiency similar to the vertical pulsed plate column. Here, the mass transfer performance of this novel column type was investigated and the application of three different models, i.e., the plug flow, the axial dispersion, and the back flow models, was evaluated to predict the solute concentration profile along the column length. The water-acetone-n-butyl acetate and the water-acetone-toluene systems were used. The influence of the operational parameters on the height of the mass transfer unit and the back flow coefficients was evaluated using the back flow model. New correlations were proposed to predict the height of the mass transfer unit along with the back flow coefficients in each phase, which were in satisfactory agreement with the experimental data.

show abstract

“…In addition, increasing the continuous phase flow rate acts as a barrier to the dispersed phase and does not release along the column. Therefore, the dispersed phase hold up is enhanced by increasing the continuous phase flow rate; however, the mean drop size is not significantly affected by the continuous phase . Hence, the interfacial area available for mass transfer is increased according to Equation .…”

Section: Resultsmentioning

confidence: 99%

Use of axial dispersion and plug flow models for determination of axial mixing and mass transfer coefficient in an l‐shaped pulsed packed extraction column

et al. 2019

Self Cite

View full text Add to dashboard Cite

In this study, the volumetric overall mass transfer and phases axial mixing coefficients have been investigated in a pilot plant of an L‐shaped pulsed packed extraction column by using two liquid systems of toluene/acetone/water and n‐butyl/acetone/water. The mass transfer performance has been evaluated using two methods of axial dispersion and a plug flow model. The effect of the operational variables and physical properties, including the dispersed and continuous phases flow rates, pulsation intensity, and interfacial tension, on mass transfer and phases axial mixing coefficients have been considered. It has been found that the pulsation intensity and the continuous phase flow rate seriously affect the mass transfer coefficient, however, the dispersed phase flow rate has a weaker effect. Also, the axial mixing of a phase is strongly affected by the pulsation intensity and the flow rate of the phase itself and it is not affected by the second phase flow rate. Finally, new correlations are proposed to accurately predict the mass transfer and axial mixing coefficients.

show abstract

Effect of Structural Parameters on Drop Size Distribution in Pulsed Packed Columns

Cited by 24 publications

References 28 publications

Hold-up and flooding characteristics in a perforated rotating disc contactor (PRDC)

Hold-up and flooding characteristics in a perforated rotating disc contactor (PRDC)

Prediction of Concentration Profiles in an L‐Shaped Pulsed Extraction Column

Use of axial dispersion and plug flow models for determination of axial mixing and mass transfer coefficient in an l‐shaped pulsed packed extraction column

Contact Info

Product

Resources

About