Gas-LiquidMassTransferin Continuous Oscillatory Flow BaaledColumnina

https://doi.org/10.22146/ajche.50832

Taslim Taslim(1*), Mahd. Sabri Takriff(2)

(1) Department of Chemical and ProcessEngineering Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, MAlAYSIA
(2) Department of Chemical and ProcessEngineering Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, MAlAYSIA
(*) Corresponding Author

Abstract


Gas-liquid mass transfer in continuous oscillatory flow was conducted in a vertical baffled column. Pure carbon dioxide (C02) was used as the dispersed phase and tap water was used as the continuous phase. The mass transfer rate of C02 measured under continuous operation was expressed in terms of the liquid-side volumetric mass transfer coefficient (kLa) and was calculated using a stationary method. The effects of oscillation frequency, oscillation amplitude, and flow rates on mass transfer were also determined. The results showed that a significant increase in mass transfer could be achieved in oscillatory flow in a baffled column comp.:lfed to that in a bubble column. The mass transfer in continuous oscillatory flow in a baffled column was not affected by the liquid flow rate in the range tested. Then, kLQwas correlated as a function of power density and superficial gas velocity.

Keywords


Baffle columns, fluid oscillation, liquid-side volumetric mass transfer coefficient (k, a), mass transfer improvement, power consumption, and superficial gas-liquid velocity.

Full Text:

PDF


References

  1. Baird, M. H. I., and Stonestreet, P. (1995). “Energy dissipation in oscillatory flow within a baffled tube," Trans IChemE., 73, 503-11.
  2. Brunold, C. R., Hunn, J. C. B., Mackley, M. R., and Thomson, J. W. (1989). "Experimental observations on flow patterns and energy losses for oscillatory flow in ducts containing sharp edges," Chem. Eng. Sci., 44, 1227-44.
  3. Butler, J. M. (1982). Carbon dioxide equilibria and their applications, Addison-Wesley, London. 15-20.
  4. Dickens, A, W., Mackley, M. R., and William, H. R. (1989). “Experimental residence time distribution measurements for unsteady flow in baffled tubes," Chem. Eng. Sci., 44, 1471-79.
  5. Hewgill, M. R., Mackley, M. R., Pandit, A. B., and Pannu, S. S. (1993). “Enhancement of gas-liquid mass transfer using oscillatory flow in baffled tubes," Chem. Eng. Sci., 48, 799-803.
  6. Jealous, A.C., and Johnson, H. F. (1995). "Power requirements for pulse generation in pulse column," Ind. Eng. Chem., 47, 1159–66.
  7. Kojima, H., Uchida, Y., Ohsawa, T., and lguci, A. (1987). “Volumetric liquid-phase mass transfer coefficient in gas-sparged three phase stirred vessel," J. Chem. Eng. Japan, 20, 104-6.
  8. Mackay, M. E., Mackley, M. R., and Wang, Y. (1991). "Oscillatory flow within tubes containing wall or central baffles," Trans IChemE., 71, 649-56.
  9. Mackley, M. R. (1987 February). "Using oscillatory flow to improve performance," Chem. Eng., 18-20
  10. Mackley, M. R. (1991). “Process innovation using oscillatory flow within baffled tubes," Trans IChemE., 69, 197-99.
  11. Ni, X., Gao, S., and Pritchard, D. W. (1995). "Study of mass transfer in yeast in a pulsed baffled bioreactor," Biotechnol. and Bioeng., 45, 165–75.
  12. Ni, X., and Gough, P. (1997). "On the discussion of dimensionless groups governing Oscillatory flow in a baffled tube," Chem. Eng. Sci., 52, 3209-12.



DOI: https://doi.org/10.22146/ajche.50832

Article Metrics

Abstract views : 1204 | views : 545

Refbacks

  • There are currently no refbacks.


ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.