Hydrodynamic, Mass Transfer and RTD Studies of Fluid Flow in a Spiral Microreactor

  • Urvashi Bhivgade
  • Yadagiri Maralla
  • Bharat A. Bhanvase
  • Shirish SonawaneEmail author
Original Contribution


In this article, the spiral microreactor made of copper tube with U-junction, mixing region, was used to study the reactor performance on sodium hydroxide-n-butyl acetate system. The internal diameter of microreactor is 1.5 mm and length is 2 m. The performance of spiral microreactor was studied considering hydrodynamic flow, mass transfer characteristics, RTD and computational analysis of fluid flow using n-butyl acetate and sodium hydroxide system. Pressure drop was estimated in spiral geometry using dean number and compared with simulation results for laminar flow. The volumetric mass transfer coefficient obtained was in the range of 0.02–0.37 s−1. The dispersion number calculated from the RTD study was equal to 0.0526 indicating the plug flow conditions.


Spiral microreactor U-junction Hydrodynamics Mass transfer characteristics RTD 



  1. 1.
    O. Worz, K.P. Jackel, Th Richter, A. Wolf, Microreactors: a new efficient tool for optimum reactor design. Chem. Eng. Sci. 56(3), 1029–1033 (2001)CrossRefGoogle Scholar
  2. 2.
    O. Worz, K.P. Jackel, Th Richter, A. Wolf, Microreactors—a new efficient tool for reactor development. Chem. Eng. Technol. 24(2), 138–142 (2001)CrossRefGoogle Scholar
  3. 3.
    K.F. Jensen, Microreaction engineering is small better. Chem. Eng. Sci. 56(2), 293–303 (2001)CrossRefGoogle Scholar
  4. 4.
    J.R. Burns, C. Ramshaw, The intensification of rapid reactions in multiphase systems using slug flow in capillaries. Lab Chip 1(1), 10–15 (2001)CrossRefGoogle Scholar
  5. 5.
    J. Yue, G. Chen, Q. Yuan, L. Luo, Y. Gonthier, Hydrodynamics and mass transfer characteristics in gas–liquid flow through a rectangular microchannel. Chem. Eng. Sci. 62(7), 2096–2108 (2007)CrossRefGoogle Scholar
  6. 6.
    A. Ghaini, M.N. Kashid, D.W. Agar, Effective interfacial area for mass transfer in the liquid–liquid slug flow capillary microreactors. Chem. Eng. Process. 49(4), 358–366 (2010)CrossRefGoogle Scholar
  7. 7.
    P. Plouffe, D.M. Roberge, J. Sieber, M. Bittel, A. Macchi, Liquid–liquid mass transfer in a serpentine micro-reactor using various solvents. Chem. Eng. J. 285, 605–615 (2016)CrossRefGoogle Scholar
  8. 8.
    A. Woitalka, S. Kuhn, K.F. Jensen, Scalability of mass transfer in liquid–liquid flow. Chem. Eng. Sci. 116, 1–8 (2014)CrossRefGoogle Scholar
  9. 9.
    A.J. Tusek, I. Anic, Z. Kurtanjek, B. Zelic, Mass transfer coefficient of slug flow for organic solvent—aqueous system in a microreactor. Korean J. Chem. Eng. 32(6), 1037–1045 (2015)CrossRefGoogle Scholar
  10. 10.
    S. Asai, H. Nakamura, H. Kataoka, Alkaline hydrolysis of n-butyl acetate. Chem. Eng. Commun. 112(1), 135–143 (1992)CrossRefGoogle Scholar
  11. 11.
    B. Xu, C. Wangfeng, X. Liu, X. Zhang, Mass transfer behavior of liquid–liquid slug flow in circular cross—section microchannel. Chem. Eng. Res. Des. 91(7), 1203–1211 (2013)CrossRefGoogle Scholar
  12. 12.
    S.S. Das, B.K. Patawari, P.K. Patowari, S. Halder, Computational analysis for mixing of fluids flowing through micro-channels of different geometries, in 5th International and 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR), 236 (2014), p. 1–6Google Scholar
  13. 13.
    Y. Zhao, G. Chen, Q. Yuan, Liquid–liquid two-phase mass transfer in the T-junction microchannels. AlChE J. 53(12), 3042–3053 (2007)CrossRefGoogle Scholar
  14. 14.
    M.N. Kashid, A. Gupta, A. Renken, L. Kiwi-Minsker, Numbering-up and mass transfer studies of liquid–liquid two-phase microstructured reactors. Chem. Eng. J. 158(2), 233–240 (2010)CrossRefGoogle Scholar
  15. 15.
    A.L. Dessimoz, L. Cavin, A. Renken, L. Kiwi-Minsker, Liquid–liquid two-phase flow patterns and mass transfer characteristics in rectangular glass microreactors. Chem. Eng. Sci. 63(16), 4035–4044 (2008)CrossRefGoogle Scholar
  16. 16.
    M.N. Kashid, Y.M. Harshe, D.W. Agar, Liquid–liquid slug flow in a capillary: an alternative to suspended drop or film contactors. Ind. Eng. Chem. Res. 46(25), 8420–8430 (2007)CrossRefGoogle Scholar
  17. 17.
    M.N. Kashid, A. Renken, L. Kiwi-Minsker, Microstructured Devices for Chemical Processing (Wiley, London, 2014)CrossRefGoogle Scholar
  18. 18.
    A.K. Yadav, J.C.D.L. Cal, M.J. Barandiaran, Feasibility of tubular microreactors for emulsion polymerization. Macromol. React. Eng. 5(1), 69–77 (2011)CrossRefGoogle Scholar
  19. 19.
    O. Levenspiel, Chemical Reaction Engineering, 2nd edn. (Wiley, New York, 1972)Google Scholar
  20. 20.
    M. Ghobadi, Y.S. Muzychka, Pressuredrop in mini-scale coiled tubing. Exp. Therm Fluid Sci. 57, 57–64 (2014)CrossRefGoogle Scholar
  21. 21.
    R.L. Manlapaz, S.W. Churchill, Fully developed laminar flow in a helically coiled tube of finite pitch. Chem. Eng. Commun. 7(1–3), 57–78 (1980)CrossRefGoogle Scholar
  22. 22.
    D.V.R. Kumar, M. Kasture, A.A. Prabhune, C.V. Ramana, B.L.V. Prasad, A.A. Kulkarni, Continuous flow synthesis of functionalized silver nanoparticles using bifunctional biosurfactants. Green Chem. 12(4), 609–615 (2010)CrossRefGoogle Scholar
  23. 23.
    Y. Maralla, S. Sonawanea, D. Kashinath, M. Pimplapure, B. Paplal, Process intensification of tetrazole reaction through tritylation of 5-[4′-(methyl) biphenyl-2-Yl] using microreactors. Chem. Eng. Process. 112, 9–17 (2017)CrossRefGoogle Scholar
  24. 24.
    Y. Maralla, S. Sonawane, Process intensification using a spiral capillary microreactor for continuous flow synthesis of performic acid and it’s kinetic study. Chem. Eng. Process. 125, 67–73 (2018)CrossRefGoogle Scholar
  25. 25.
    Y. Maralla, S.H. Sonawane, Process intensification by using a helical capillary microreactor for a continuous flow synthesis of peroxypropionic acid and its kinetic study. Period Polytech. Chem. 63, 65–74 (2018)CrossRefGoogle Scholar
  26. 26.
    Y. Maralla, S. Sonawane, Comparative study for production of unstable peracetic acid using microstructured reactors and its kinetic study. J. Flow. Chem. 9, 145–154 (2019). CrossRefGoogle Scholar

Copyright information

© The Institution of Engineers (India) 2019

Authors and Affiliations

  • Urvashi Bhivgade
    • 1
  • Yadagiri Maralla
    • 1
  • Bharat A. Bhanvase
    • 2
  • Shirish Sonawane
    • 1
    Email author
  1. 1.Department of Chemical EngineeringNational Institute of TechnologyWarangalIndia
  2. 2.Department of Chemical Engineering, Laxminarayan Institute of TechnologyRashtrasant Tukadoji Maharaj Nagpur UniversityNagpurIndia

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