Mass Transfer Coefficient in a Pulsed Cross-Flow Sieve Plate Column for Phenol-Containing Wastewater System

doi:10.19894/j.issn.1000-0518.240273

Chinese Journal of Applied Chemistry ›› 2025, Vol. 42 ›› Issue (4): 542-551.DOI: 10.19894/j.issn.1000-0518.240273

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Mass Transfer Coefficient in a Pulsed Cross-Flow Sieve Plate Column for Phenol-Containing Wastewater System

Guang-Yin SUN¹, Ya-Zhou LI¹^,², Xiao-Yan LIU³, Long-Xiang LI¹, Guo-Hua LYU⁴, Bo-Ren TAN², Yong WANG²()

^1.College of Energy and Environmental Engineering，Hebei University of Engineering，Handan 056038，China
^2.National Engineering Research Center for Green Recycling of Strategic Metal Resources Technology，Institute of Process Engineering，Chinese Academy of Sciences，Beijing 100190，China
^3.Shandong Qinghui Environmental Consulting Co. ，Ltd. ，Qingdao 266100，China
^4.Hebei Sinochem Xinbao Chemical Technology Co. ，Ltd. ，Handan 056500，China

Received:2024-08-27 Accepted:2025-03-08 Published:2025-04-01 Online:2025-05-14
Contact: Yong WANG
Supported by:
the National Natural Science Foundation of China(22178350);the Major Research Plan of the National Natural Science Foundation of China(92262305)

Abstract

Abstract:

The hydraulic properties and mass transfer characteristics of a pulsed cross-flow sieve plate extraction column were investigated with phenol-containing wastewater extraction system， and the separation of phenol was realized. The results show that dispersed-phase holdup （x_d） decreases gradually with the increase of pulse intensity （Af） and then increases， and x_d reaches the minimum value at the Af of 0.0126 m/s， the Sauter mean （d₃₂） decreases with the Af increasing， and the d₃₂ decreases to about 1.3 mm at the Af of 0.0272 m/s. With the increase of two-phase flow rate， the x_d increases， but the phase flowrate has no significant effect on the d₃₂. As the Af increases， the extraction efficiency of phenol decreases first and then increases， which finally reaches 98.96%. The mass transfer coefficient was obtained using the axial diffusion model， and a prediction model was developed. The average relative error between experimental and calculated results was less than 10%， which provide a fundamental help for the equipment design and application.

Key words: Cross-flow sieve plate extraction column, Pulse, Dispersed-phase holdup, Droplet size, Mass transfer coefficient

CLC Number:

O625

Guang-Yin SUN, Ya-Zhou LI, Xiao-Yan LIU, Long-Xiang LI, Guo-Hua LYU, Bo-Ren TAN, Yong WANG. Mass Transfer Coefficient in a Pulsed Cross-Flow Sieve Plate Column for Phenol-Containing Wastewater System[J]. Chinese Journal of Applied Chemistry, 2025, 42(4): 542-551.

Figures/Tables 10

Fig.1 Pulsed cross-flow sieve column extraction system

Fig.2 The measuring device for the diameter of a droplet

Fig.3 Effects of dispersed phase velocity on xd

Fig.4 Effects of pulsation intensities on xd

Fig.5 Effect of dispersed phase velocity on d32 and droplet distribution

Fig.6 Effect of pulsation intensity on d32

Fig.7 Effect of pulsation intensities on extraction efficiency

Fig.8 Effects of pulsation intensities on specific?surface?area?for?mass?transfer （a）

Fig.9 Effects of pulsation intensities on overall mass transfer coefficient

Fig.10 Comparison of the experimental data with the predicted koc

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Mass Transfer Coefficient in a Pulsed Cross-Flow Sieve Plate Column for Phenol-Containing Wastewater System

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