Effects of rotor and stator geometry on dissolution process and power consumption in jet-flow high shear mixers

Abstract

The jet-flow high shear mixer (JF-HSM) is a new type of intensified equipment with special configurations of the rotor and the stator. The mass transfer property and power consumption were studied in the solid-liquid system for a series of JF-HSMs involving different configuration parameters, such as rotor diameter, rotor blade inclination, rotor blade bending direction, stator diameter, and stator bottom opening diameter. The flow characteristics were examined by computational fluid dynamic simulations. Results indicate that the turbulent power consumption of the JF-HSM is affected by the change in rotor blade inclination and stator bottom opening. With the increase in the shear head size and the change in the rotor into a backward-curved blade, the solid-liquid mass transfer rate can be remarkably increased under the same input power. Dimensionless correlations for the mass transfer coefficient and power consumption were obtained to guide the scale-up design and selection of such a new type of equipment to intensify the overall mixing efficiency.

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References

  1. 1.

    John T P, Fonte C P, Kowalski A, Rodgers T L. A comparison of power and flow characteristics between batch and in-line rotor-stator mixers. Chemical Engineering Science, 2019, 202: 481–490

    CAS  Article  Google Scholar 

  2. 2.

    James J, Cooke M, Trinh L, Hou R, Martin P, Kowalski A, Rodgers T L. Scale-up of batch rotor–stator mixers. Part 1—power constants. Chemical Engineering Research & Design, 2017, 124: 313–320

    CAS  Article  Google Scholar 

  3. 3.

    Utomo A T, Baker M, Pacek A W. Flow pattern, periodicity and energy dissipation in a batch rotor–stator mixer. Chemical Engineering Research & Design, 2008, 86(12): 1397–1409

    CAS  Article  Google Scholar 

  4. 4.

    Qin H, Xu Q, Li W, Dang X, Han Y, Lei K, Zhou L, Zhang J. Effect of stator geometry on the emulsification and extraction in the inline single-row blade-screen high shear mixer. Industrial & Engineering Chemistry Research, 2017, 56(33): 9376–9388

    CAS  Article  Google Scholar 

  5. 5.

    Shiba R, Uddin M A, Kato Y, Kitamura S Y. Solid/liquid mass transfer correlated to mixing pattern in a mechanically-stirred vessel. Iron and Steel Institute of Japan International, 2014, 54(12): 2754–2760

    CAS  Article  Google Scholar 

  6. 6.

    Yang L, Cheng J, Fan P, Yang C, Mao Z. Micromixing of solidliquid systems in a stirred tank with double impellers. Chemical Engineering & Technology, 2013, 36(3): 443–449

    CAS  Article  Google Scholar 

  7. 7.

    Chen G, Luo G, Xu J, Wang J. Preparation of barium sulfate particles using filtration dispersion precipitation method in O/W system. Powder Technology, 2005, 153(2): 90–94

    CAS  Article  Google Scholar 

  8. 8.

    Montante G, Carletti C, Maluta F, Paglianti A. Solid dissolution and liquid mixing in turbulent stirred tanks. Chemical Engineering & Technology, 2019, 42(8): 1627–1634

    CAS  Google Scholar 

  9. 9.

    Stoian D, Eshtiaghi N, Wu J, Parthasarathy R. Enhancing impeller power efficiency and solid–liquid mass transfer in an agitated vessel with dual impellers through process intensification. Industrial & Engineering Chemistry Research, 2017, 56(24): 7021–7036

    CAS  Article  Google Scholar 

  10. 10.

    Tokura Y, Uddin M A, Kato Y. Effect of suspension pattern of sedimentary particles on solid/liquid mass transfer in a mechanically stirred vessel. Industrial & Engineering Chemistry Research, 2019, 58(24): 10172–10178

    CAS  Article  Google Scholar 

  11. 11.

    Viten’ko T N, Gumnitskii Y M. Mass transfer during dissolution of solids using hydrodynamic cavitation devices. Theoretical Foundations of Chemical Engineering, 2006, 40(6): 598–603

    Article  Google Scholar 

  12. 12.

    Myers K J, Reeder M F, Ryan D. Power draw of a high-shear homogenizer. Canadian Journal of Chemical Engineering, 2001, 79(1): 94–99

    CAS  Article  Google Scholar 

  13. 13.

    Padron G. Measurement and comparison of power draw in batch rotor-stator mixers. Dissertation for the Master’s Degree. Maryland: University of Maryland, 2001, 126–127

    Google Scholar 

  14. 14.

    Doucet L, Ascanio G, Tanguy P A. Hydrodynamics characterization of rotor-stator mixer with viscous fluids. Chemical Engineering Research & Design, 2005, 83(10): 1186–1195

    CAS  Article  Google Scholar 

  15. 15.

    James J, Cooke M, Kowalski A, Rodgers T L. Scale-up of batch rotor-stator mixers. Part 2—Mixing and emulsification. Chemical Engineering Research & Design, 2017, 124: 321–329

    CAS  Article  Google Scholar 

  16. 16.

    Carletti C, Montante G, De Blasio C, Paglianti A. Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography. Chemical Engineering Science, 2016, 152: 478–487

    CAS  Article  Google Scholar 

  17. 17.

    Altheimer M, Becker D, D’Aleo F P, Rudolf von Rohr P. Flow regime and liquid–solid mass transfer investigation in a designed porous structure using electrochemical micro-probes. Chemical Engineering Science, 2016, 152: 699–708

    CAS  Article  Google Scholar 

  18. 18.

    Paglianti A, Carletti C, Busciglio A, Montante G. Solid distribution and mixing time in stirred tanks: The case of floating particles. Canadian Journal of Chemical Engineering, 2017, 95(9): 1789–1799

    CAS  Article  Google Scholar 

  19. 19.

    Koganti V, Carroll F, Ferraina R, Falk R, Waghmare Y, Berry M, Liu Y, Norris K, Leasure R, Gaudio J. Application of modeling to scale-up dissolution in pharmaceutical manufacturing. American Association of Pharmaceutical Scientists PharmSciTech, 2010, 11(4): 1541–1548

    Google Scholar 

  20. 20.

    Håkansson A, Mortensen H H, Andersson R, Innings F. Experimental investigations of turbulent fragmenting stresses in a rotorstator mixer. Part 1. Estimation of turbulent stresses and comparison to breakup visualizations. Chemical Engineering Science, 2017, 171: 625–637

    Article  Google Scholar 

  21. 21.

    Qi N, Wang H, Zhang K, Zhang H. Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model. Frontiers of Chemical Engineering in China, 2010, 4(4): 506–514

    CAS  Article  Google Scholar 

  22. 22.

    Jasińska M. Test reactions to study efficiency of mixing. Chemical & Process Engineering, 2015, 36(2): 171–208

    Article  Google Scholar 

  23. 23.

    John T P, Panesar J S, Kowalski A, Rodgers T L P, Fonte C. Linking power and flow in rotor-stator mixers. Chemical Engineering Science, 2019, 207: 504–515

    CAS  Article  Google Scholar 

  24. 24.

    Xu S, Cheng Q, Li W, Zhang J. LDA measurements and CFD simulations of an in-line high shear mixer with ultrafine teeth. AIChE Journal. American Institute of Chemical Engineers, 2014, 60(3): 1143–1155

    CAS  Article  Google Scholar 

  25. 25.

    Levins D, Glastonbury J. Application of Kolmogorofff’s theory to particle—liquid mass transfer in agitated vessels. Chemical Engineering Science, 1972, 27(3): 537–543

    CAS  Article  Google Scholar 

  26. 26.

    Harriott P. Mass transfer to particles: Part I. Suspended in agitated tanks. AIChE Journal. American Institute of Chemical Engineers, 1962, 8(1): 93–101

    CAS  Article  Google Scholar 

  27. 27.

    Nienow A W, Miles D. The effect of impeller/tank, configurations on fluid-particle mass transfer. Chemical Engineering Journal, 1978, 15(1): 13–24

    CAS  Article  Google Scholar 

  28. 28.

    Pangarkar V G, Yawalkar A A, Sharma M M, Beenackers A A C M. Particle-liquid mass transfer coefficient in two-/three-phase stirred tank reactors. Industrial & Engineering Chemistry Research, 2002, 41(17): 4141–4167

    CAS  Article  Google Scholar 

  29. 29.

    Bong E. Solid-liquid mass transfer in agitated vessels with high solids concentration. Dissertation for the Doctoral Degree. Melbourne: Royal Melbourne Institute of Technology University, 2013, 47–58

    Google Scholar 

  30. 30.

    Özcan-Taşkın G, Kubicki D, Padron G. Power and flow characteristics of three rotor-stator heads. Canadian Journal of Chemical Engineering, 2011, 89(5): 1005–1017

    Article  Google Scholar 

  31. 31.

    Cooke M, Rodgers T L, Kowalski A J. Power consumption characteristics of an in-line silverson high shear mixer. AIChE Journal. American Institute of Chemical Engineers, 2012, 58(6): 1683–1692

    CAS  Article  Google Scholar 

  32. 32.

    Carletti C, Bikić S, Montante G, Paglianti A. Mass transfer in dilute solid–liquid stirred tanks. Industrial & Engineering Chemistry Research, 2018, 57(18): 6505–6515

    CAS  Article  Google Scholar 

  33. 33.

    Bong E Y, Eshtiaghi N, Wu J, Parthasarathy R. Optimum solids concentration for solids suspension and solid-–liquid mass transfer in agitated vessels. Chemical Engineering Research & Design, 2015, 100: 148–156

    CAS  Article  Google Scholar 

Download references

Acknowledgements

This work was supported by the National Key Research and Development Program of China (Grant No. 2016YFD-0501402-04), the National Natural Science Foundation of China (Grant Nos. 21776179, 21621004) and the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT_15R46).

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Correspondence to Wenpeng Li or Jinli Zhang.

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Yang, L., Li, W., Guo, J. et al. Effects of rotor and stator geometry on dissolution process and power consumption in jet-flow high shear mixers. Front. Chem. Sci. Eng. (2020). https://doi.org/10.1007/s11705-020-1928-7

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Keywords

  • jet-flow high shear mixer
  • solid particle dissolution
  • power consumption characteristics
  • CFD Simulation