Abstract
This study investigated the effect of multiple impeller designs and configurations on the Sauter mean diameter and the uniformity of droplet size in a 100 L scale stirred tank. By using a borescope installed inside the tank, droplet images of a highly turbid liquid-liquid system were captured even at high impeller speeds, and by adjusting the borescope position, it could be observed how the droplet size changed depending on the position. The area of the flow pattern produced by the impeller was taken as an impeller region, and it explained well the change in the droplet size due to the varying liquid phase volume and impeller spacing. In addition, the change of the Sauter mean diameter and the droplet size uniformity was also elucidated by the variation of the impeller diameter, blade angle, and number of impellers. All three parameters showed a decrease in the deviation between droplet sizes as they increased, but increasing the impeller diameter was the most effective in reducing the Sauter mean diameter itself.
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Abbreviations
- B:
-
bottom clearance of the lower impeller [cm]
- D:
-
reactor diameter [cm]
- DI :
-
impeller diameter [cm]
- di :
-
droplet diameter [cm]
- d32 :
-
Sauter mean diameter [cm]
- H:
-
liquid phase height [cm]
- M:
-
torque of the impeller [N m]
- N:
-
impeller speed [s−1]
- NI :
-
number of impellers [−]
- ni :
-
number of droplets
- P:
-
power consumption [W]
- R:
-
:impeller zone radius [cm]
- S:
-
impeller spacing [cm]
- T:
-
top clearance of the upper impeller [cm]
- V:
-
liquid phase volume [L]
- VI :
-
impeller zone volume [L]
- W:
-
impeller blade width [cm]
- \(\overline \varepsilon \) :
-
mean energy dissipation rate [W kg−1]
- θ :
-
impeller blade angle of the upper impeller [°]
- ϕ :
-
organicphase holdup [−]
References
C. Joshi and R. S. Singhal, Korean J. Chem. Eng., 35, 195 (2018).
H. Im, J. Park and J. W. Lee, Korean J. Chem. Eng., 36, 1680 (2019).
J. W. Lee, Y. C. Ko, Y. K. Jung, K. S. Lee and E. S. Yoon, Comput. Chem. Eng., 21, S1105 (1997).
J.-R. Lee, N. Hasolli, K.-S. Lee, K.-Y. Lee and Y.-O. Park, Korean J. Chem. Eng., 36, 1548 (2019).
A. Wongkia, K. Suriye, A. Nonkhamwong, P. Praserthdam and S. Assabumrungrat, Korean J. Chem. Eng., 30, 593 (2013).
J. A. Rocha-Valadez, M. Hassan, G. Corkidi, C. Flores, E. Galindo and L. Serrano-Carreón, Biotechnol. Bioeng., 91, 54 (2005).
D. E. Bergbreiter and S. D. Sung, Adv. Synth. Catal., 348, 1352 (2006).
J. Park, S. Lee and J. W. Lee, Ind. Eng. Chem. Res., 57, 2310 (2018).
J. H. Lee, H. U. Lee, J. H. Lee, S. K. Lee, H. Y. Yoo, C. Park and S. W. Kim, Korean J. Chem. Eng., 36, 71 (2019).
C. Desnoyer, O. Masbernat and C. Gourdon, Chem. Eng. Sci., 58, 1353 (2003).
M. Kraume, A. Gäbler and K. Schulze, Chem. Eng. Technol., 27, 330 (2004).
S. Lee and A. Varma, AIChE J., 61, 2228 (2015).
L. Böhm, L. Hohl, C. Bliatsiou and M. Kraume, Chem. Ing. Tech., 91, 1724 (2019).
A. Gäbler, M. Wegener, A. Paschedag and M. Kraume, Chem. Eng. Sci., 61, 3018 (2006).
D. Pinelli, A. Bakker, K. Myers, M. Reeder, J. Fasano and F. Magelli, Chem. Eng. Res. Des., 81, 448 (2003).
S. Maaß, T. Rehm and M. Kraume, Chem. Eng. J., 168, 827 (2011).
N. Hardy, F. Augier, A. W. Nienow, C. Béal and F. B. Chaabane, Chem. Eng. Sci., 172, 158 (2017).
D. Gu, Z. Liu, C. Xu, J. Li, C. Tao and Y. Wang, Chem. Eng. Process., 118, 37 (2017).
V. Mishra and J. Joshi, Chem. Eng. Res. Des., 72, 657 (1994).
M. Cai, X. Zhou, J. Lu, W. Fan, C. Niu, J. Zhou, X. Sun, L. Kang and Y. Zhang, Bioresour. Technol., 102, 3584 (2011).
F. Magelli, G. Montante, D. Pinelli and A. Paglianti, Chem. Eng. Sci., 101, 712 (2013).
R. Darvishi, M. N. Esfahany and R. Bagheri, Ind. Eng. Chem. Res., 54, 10953 (2015).
M. Ruiz, P. Lermanda and R. Padilla, Hydrometallurgy, 63, 65 (2002).
J. Ritter and M. Kraume, Chem. Eng. Technol., 23, 579 (2000).
W. M. Haynes, D. R. Lide and T. J. Bruno, CRC handbook of chemistry and physics, CRC Press, Boca Raton, Florida (2017).
M. Laliberté, J. Chem. Eng. Data, 52, 321 (2007).
N. Vargaftik, B. Volkov and L. Voljak, J. Phys. Chem. Ref. Data, 12, 817 (1983).
H. Girault, D. Schiffrin and B. Smith, J. Colloid Interface Sci., 101, 257 (1984).
J. Lovick, A. Mouza, S. Paras, G. Lye and P. Angeli, J. Chem. Technol. Biotechnol., 80, 545 (2005).
B. Letellier, C. Xuereb, P. Swaels, P. Hobbes and J. Bertrand, Chem. Eng. Sci., 57, 4617 (2002).
S. Okufi, E. P. De Ortiz and H. Sawistowski, Can. J. Chem. Eng., 68, 400 (1990).
P. Jüsten, G. Paul, A. Nienow and C. Thomas, Biotechnol. Bioeng., 52, 672 (1996).
G. Zhou and S. M. Kresta, Chem. Eng. Sci., 53, 2063 (1998).
A. Amanullah, B. C. Buckland and A. W. Nienow, Handbook of industrial mixing Science and practice, John Wiley & Sons Inc., Hoboken, New Jersey, 1071 (2004).
W. McManamey, Chem. Eng. Sci., 34, 432 (1979).
K. Rutherford, K. Lee, S. Mahmoudi and M. Yianneskis, AIChE J., 42, 332 (1996).
P. R. Gogate, A. A. Beenackers and A. B. Pandit, Biochem. Eng. J., 6, 109 (2000).
V. Hudcova, V. Machon and A. Nienow, Biotechnol. Bioeng., 34, 617 (1989).
C. Baudou, C. Xuereb and J. Bertrand, Can. J. Chem. Eng., 75, 653 (1997).
A. Pacek, S. Chamsart, A. Nienow and A. Bakker, Chem. Eng. Sci., 54, 4211 (1999).
L. A. Cutter, AIChE J., 12, 35 (1966).
H. Wu and G. Patterson, Chem. Eng. Sci., 44, 2207 (1989).
J. Sheng, H. Meng and R. Fox, Chem. Eng. Sci., 55, 4423 (2000).
E. L. Paul, V. A. Atiemo-Obeng and S. M. Kresta, Handbook of industrial mixing Science and practice, John Wiley & Sons Inc., Hoboken (2004).
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Park, J., Ahan, W. & Lee, J.W. Effect of multiple impeller designs and configurations on the droplet size and uniformity in a 100 L scale stirred tank. Korean J. Chem. Eng. 38, 1348–1357 (2021). https://doi.org/10.1007/s11814-021-0803-7
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DOI: https://doi.org/10.1007/s11814-021-0803-7