Skip to main content

Micromixing in a Single Feed Semibatch Precipitation Process

  • Chapter
Mixing and Crystallization

Abstract

Precipitation processes are initiated by chemical reactions, which lead to the generation of high supersaturations followed by nucleation and growth of the precipitated particles. The precipitation reactions are very fast and are thereby influenced by mixing. Micromixing is described in terms of engulfment of the environment by a mixed-precipitation zone. Macromixing is accounted for by updating the environment. The effects of various operating conditions on the particle size distribution of barium sulfate were investigated and verified experimentally in an 18-L Rushton type semibatch reactor.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 129.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  • Aslund, B.L., and Rasmuson, A.C. (1992) Semibatch reaction crystallization of benzoic acid. A.I.Ch.E. J. 38, 328–342.

    Article  Google Scholar 

  • Baldyga, J., and Boume, J.R. (1984) A fluid mechanical approach to turbulent mixing and chemical reaction. Chem. Eng. Comm. 28, 231–281.

    Article  CAS  Google Scholar 

  • Baldyga, J., and Bourne, J.R. (1989a) Simplification of micromixing calculations I. Derivation and application of new model. Chem. Eng. J. 42, 83–92.

    Article  CAS  Google Scholar 

  • Baldyga, J., and Bourne, J.R. (1989b) Simplification of micromixing calculations II. New applications. Chem. Eng. J. 42, 93–101.

    Article  CAS  Google Scholar 

  • Baldyga, J., and Rohani, S. (1987) Micromixing described in terms of inertial-convective disintegration of large eddies and viscous convective interactions among small eddies I. General development and batch systems. Chem. Eng. Sci. 42, 2597–2610.

    Article  CAS  Google Scholar 

  • Baldyga, J., Podgórska, W., and Pohorecki, R. (1995) Mixing precipitation model with application to double feed semibatch precipitation, Chem. Eng. Sci. 50, 1281–1300.

    Article  CAS  Google Scholar 

  • Bourne, J. R., and Yu, S. (1994) Investigation of micromixing in stirred tank reactors using parallel reactions. Ind. Eng. Chem. Res. 33, 41–55.

    Article  CAS  Google Scholar 

  • Chen, C., Zhang, C., and Chen, G. (1996) Interaction of macro and micromixing on particle size distribution in reactive precipitation. Chem. Eng. Sci. 51, 1957–1966.

    Article  CAS  Google Scholar 

  • Fitchett, D.E, and Tarbell, J.M. (1990) Effect of mixing on the precipitation of barium sulfate in an MSMPR reactor A.I.Ch.E. J. 36, 511–522.

    Article  CAS  Google Scholar 

  • Garside, J., and Tavare, N.S. (1985) Mixing reaction and precipitation limits of micromixing in an MSMPR crystallizers. Chem. Eng. Sci. 40 1485–1493.

    Article  CAS  Google Scholar 

  • Marcant B., and David, R. (1991) Experimental Evidence for and prediction of micromixing effects in precipitation. A.LCh.E. J. 37, 1698–1710.

    Article  CAS  Google Scholar 

  • Nielsen, A.E. (1958) The kinetics of crystal growth in barium sulfate Precipitation. Acta Chem. Scand. 12, 951.

    Article  CAS  Google Scholar 

  • Okamoto, Y., Nishikawa, M., and Hashimoto, K. (1981) Energy dissipation rate distribution in mixing vessels and its effect on liquid-liquid dispersion and solid-liquid mass transfer Int. Chem. Eng. 21, 88–94.

    Google Scholar 

  • Pohorecki, R., and Baldyga, J. (1988) Effects of micromixing and the manner of reactor feeding on precipitation in stirred tank reactors Chem. Eng. Sci. 43, 1949–1954.

    Article  CAS  Google Scholar 

  • Randolph, A.D., and Larson, M.A. (1988) Theory of Particulate Processes. Academic Press, New York-London.

    Google Scholar 

  • Uhl, V.W., and Gray, J.B. (1966) Mixing Theory and Practice Vol. I. Academic Press, New York-London.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2000 Springer Science+Business Media Dordrecht

About this chapter

Cite this chapter

Philips, R., Rohani, S., Baldyga, J. (2000). Micromixing in a Single Feed Semibatch Precipitation Process. In: Gupta, B.S., Ibrahim, S. (eds) Mixing and Crystallization. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2290-2_18

Download citation

  • DOI: https://doi.org/10.1007/978-94-017-2290-2_18

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-5410-4

  • Online ISBN: 978-94-017-2290-2

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics