The effect of multi-orifice plate configuration on bubble detachment volume

doi:10.1016/j.cjche.2018.09.024

Abstract

Abstract: The multi-orifice plate gas sparger, mainly composed of a multi-orifice plate and a gas chamber, is one of the most common sparger facilities. The aeration performance of multi-orifice plate has a close relation with the multiorifice plate configuration. In addition, the weeping phenomenon has a considerable influence on the gas chamber condition which affects the bubble detachment volume directly. This paper conducts a set of visual experiments to study the influence of multi-orifice configuration and gas chamber condition on the aeration performance of gas sparger. For multi-orifice plate, an improved theoretical model is proposed which considers the wave effect of the previous bubbles generated from adjacent orifices and the variance of the number of active bubbling orifice. A parameter is proposed to evaluate the aeration performance in order to overcome the difficulty caused by the randomness of bubble formation process. The experimental results suggest that the gas chamber filled with water is in favor of large bubble formation. The influence of the pitch of orifice on aeration performance can only be observed in high-restricted case. According to the theoretical model and experimental results, the influences of gas flow rate and the number of open orifices on the aeration performance are analyzed and a design criterion for the number of open orifice is proposed.

Key words: Multi-orifice plate, Aeration performance, Bubble detachment volume, The number of open orifices

摘要： The multi-orifice plate gas sparger, mainly composed of a multi-orifice plate and a gas chamber, is one of the most common sparger facilities. The aeration performance of multi-orifice plate has a close relation with the multiorifice plate configuration. In addition, the weeping phenomenon has a considerable influence on the gas chamber condition which affects the bubble detachment volume directly. This paper conducts a set of visual experiments to study the influence of multi-orifice configuration and gas chamber condition on the aeration performance of gas sparger. For multi-orifice plate, an improved theoretical model is proposed which considers the wave effect of the previous bubbles generated from adjacent orifices and the variance of the number of active bubbling orifice. A parameter is proposed to evaluate the aeration performance in order to overcome the difficulty caused by the randomness of bubble formation process. The experimental results suggest that the gas chamber filled with water is in favor of large bubble formation. The influence of the pitch of orifice on aeration performance can only be observed in high-restricted case. According to the theoretical model and experimental results, the influences of gas flow rate and the number of open orifices on the aeration performance are analyzed and a design criterion for the number of open orifice is proposed.

关键词: Multi-orifice plate, Aeration performance, Bubble detachment volume, The number of open orifices

Jiming Wen, Qiunan Sun, Zhongning Sun, Haifeng Gu. The effect of multi-orifice plate configuration on bubble detachment volume[J]. Chin.J.Chem.Eng., 2019, 27(1): 72-84.

Jiming Wen, Qiunan Sun, Zhongning Sun, Haifeng Gu. The effect of multi-orifice plate configuration on bubble detachment volume[J]. Chinese Journal of Chemical Engineering, 2019, 27(1): 72-84.

References

[1] J. Smith, Bubble Wake Dynamics in Liquids and Liquid-Solid Suspensions, in:LiangShih Fan, Katsumi Tsuchiya (Eds.), Butterworth-Heinemann, 1990.

[2] J. Zhang, L.S. Fan, On the rise velocity of an interactive bubble in liquids, Chem. Eng. J. 92(1-3) (2003) 169-176.

[3] M. Jamialahmadi, H. Muuller-Steinhagen, Effect of superficial gas velocity on bubble size, terminal bubble rise velocity and gas hold-up in bubble columns, Dev. Chem. Eng. Miner. Process. (1) (1993) 16-31.

[4] P. Snabre, F. Magnifotcham, I. Formation and rise of a bubble stream in a viscous liquid, Eur. Phys. J. B 4(3) (1998) 369-377.

[5] G. Besagni, F. Inzoli, G.D. Giorgia, et al., The dual effect of viscosity on bubble column hydrodynamics, Chem. Eng. Sci. 158(2017) 509-538.

[6] N. Kantarci, F. Borak, K.O.U.B. Ulgen, Bubble column reactors, Process Biochem. (7) (2005) 2263-2283.

[7] V.T. Nguyen, C. Song, B. Bae, et al., Modeling of bubble coalescence and break-up considering turbulent suppression phenomena in bubbly two-phase flow, Int. J. Multiphase Flow 54(2013) 31-42.

[8] J. Solsvik, H.A. Jakobsen, Development of fluid particle breakup and coalescence closure models for the complete energy spectrum of isotropic turbulence, Ind. Eng. Chem. Res. 55(5) (2015) 1449-1460.

[9] K. Akita, F. Yoshida, Bubble size, interfacial area, and liquid-phase mass transfer coefficient in bubble columns, Ind. Eng. Chem. Process. Des. Dev. (1) (1974) 84-91.

[10] Wilkinson, P. Mervyn, Physical aspects and scale-up of high pressure bubble columns, J. SE Asian Stud. 41(3) (2010) 255-273.

[11] M.R. Bhole, J.B. Joshi, D. Ramkrishna, CFD simulation of bubble columns incorporating population balance modeling, Chem. Eng. Sci. 63(8) (2008) 2267-2282.

[12] Y. Liao, D. Lucas, A literature review on mechanisms and models for the coalescence process of fluid particles, Chem. Eng. Sci. 65(10) (2010) 2851-2864.

[13] N. Yang, Q. Xiao, A mesoscale approach for population balance modeling of bubble size distribution in bubble column reactors, Chem. Eng. Sci. 170(2017) 241-250.

[14] G.R. Guedon, G. Besagni, F. Inzoli, Prediction of gas-liquid flow in an annular gap bubble column using a bi-dispersed Eulerian model, Chem. Eng. Sci. 161(2017) 138-150.

[15] G. Marrucci, L. Nicodemo, Coalescence of gas bubbles in aqueous solutions of inorganic electrolytes, Chem. Eng. Sci. (9) (1967) 1257-1265.

[16] M. Jamialahmad, H. Miiller-Steinhagen, Effect of alcohol, organic acid and potassium chloride concentration on bubble size, bubble rise velocity and gas hold-up in bubble columns, Chem. Eng. J. (1) (1992) 47-56.

[17] M.C. Ruzicka, M.M. Vecer, S. Orvalho, et al., Effect of surfactant on homogeneous regime stability in bubble column, Chem. Eng. Sci. (4) (2008) 951-967.

[18] J. Zahradnik, M. Fialova, M. Ruzicka, et al., Duality of the gas-liquid flow regimes in bubble column reactors, Chem. Eng. Sci. 52(21) (1997) 3811-3826.

[19] G. Besagni, L. Gallazzini, F. Inzoli, Effect of gas sparger design on bubble column hydrodynamics using pure and binary liquid phases, Chem. Eng. Sci. 176(2017) 116-126.

[20] P.M. Wilkinson, A.P. Spek, L.L.V. Dierendonck, Design parameters estimation for scale-up of high-pressure bubble columns, AIChE J. 38(4) (1992) 544-554.

[21] M. Martin, J.M. Garcia, F.J. Montes, et al., On the effect of the orifice configuration on the coalescence of growing bubbles, Chem. Eng. Process. (9-10) (2008) 1799-1809.

[22] Y. Park, A.L. Tyler, N. de Nevers, The chamber orifice interaction in the formation of bubbles, Chem. Eng. Sci. (8) (1977) 907-916.

[23] F.B. Campos, P.L.C. Lage, Heat and mass transfer modeling during the formation and ascension of superheated bubbles, Int. J. Heat Mass Transf. 43(16) (2000) 2883-2894.

[24] S. Ata, Y. Kang, E. Law, et al., Influence of particles on the formation of bubbles from a submerged capillary, Miner. Eng. 66-68(Vol 2) (2014) 47-53.

[25] M. Huber, D. Dobesch, P. Kunz, et al., Influence of orifice type and wetting properties on bubble formation at bubble column reactors, Chem. Eng. Sci. (2016) 151-162.

[26] X. Guan, N. Yang, Bubble properties measurement in bubble columns:from homogeneous to heterogeneous regime, Chem. Eng. Res. Des. 127(2017) 103-112.

[27] M.T. Dhotre, J.B. Joshi, Design of a gas distributor:Three-dimensional CFD simulation of a coupled system consisting of a gas chamber and a bubble column, Chem. Eng. J. 125(3) (2007) 149-163.

[28] W. Shi, N. Yang, X. Yang, A kinetic inlet model for CFD simulation of large-scale bubble columns, Chem. Eng. Sci. 158(2017) 108-116.

[29] F. Bahadori, R. Rahimi, Simulations of gas distributors in the design of shallow bubble column reactors, Chem. Eng. Technol. 30(4) (2010) 443-447.

[30] D.D. McClure, J.M. Kavanagh, D.F. Fletcher, et al., Development of a CFD model of bubble column bioreactors:Part two-Comparison of experimental data and CFD predictions, Chem. Eng. Technol. (1) (2014) 131-140.

[31] J.J.H.A. Riet, Mass transfer, mixing and heat transfer phenomena in low viscosity bubble column reactors, Chem. Eng. J. (2) (1984) B21-B42.

[32] N.A. Kazakis, A.A. Mouza, S.V.H.P. Paras, Experimental study of bubble formation at metal porous spargers:Effect of liquid properties and sparger characteristics on the initial bubble size distribution, Chem. Eng. J. (2) (2008) 265-281.

[33] T.T.L.T. Loimer, G. Machu, U. Schaflinger, Inviscid bubble formation on porous plates and sieve plates, Chem. Eng. Sci. (4) (2004) 809-818.

[34] R.H. Bowers, The mechanics of bubble formation, J. Chem. Technol. Biotechnol. 5(10) (1955) 542-548.

[35] E.S. Gaddis, A. Vogelpohl, Bubble formation in quiescent liquids under constant flow conditions, Chem. Eng. Sci. 41(1) (1986) 97-105.

[36] J. Wen, Q. Sun, Z. Sun, et al., An improved image processing technique for determination of volume and surface area of rising bubble, Int. J. Multiphase Flow 104(2018) 294-306.

[37] W. Zhang, R.B.H. Tan, A model for bubble formation and weeping at a submerged orifice, Chem. Eng. Sci. 55(24) (2000) 6243-6250.

[38] L. Zhang, M. Shoji, Aperiodic bubble formation from a submerged orifice, Chem. Eng. Sci. (18) (2001) 20.

[39] L.M. Milne-Thomson, Theoretical Hydrodynamics, Macmillan, (1960) 62.

[40] K. Sekoguchi, An experimental investigation of sparsely populated air bubbles in a water stream of a vertical duct, Two-Phase Bubble Flow, Yokendo Ltd., Tokyo, (1974) 1395-1403.

[41] H. Schlichting, K. Gersten, Boundary-layer Theory, McGraw-Hill, (1979) 48-89.

[42] A. Marmur, E. Rubin, A theoretical model for bubble formation at an orifice submerged in an inviscid liquid, Chem. Eng. Sci. 31(6) (1976) 453-463.

[43] D.J. McCann, R.G.H. Prince, Bubble formation and weeping at a submerged orifice, Chem. Eng. Sci. 24(5) (1970) 801-814.