Rushton turbine

The Rushton turbine or Rushton disc turbine is a radial flow impeller used for many mixing applications (commonly for gas dispersion applications) in process engineering and was invented by John Henry Rushton.[1] The design is based on a flat horizontal disk, with flat, vertically mounted blades that are usually six or eight in number.[2] Recent innovations include the use of concave or semi-circular blades.[3]

It is preferred in the fermentation and bioprocessing industries, because it can very efficiently facilitate gas dispersion, and it can create independent large-scale circulation loops for better homogenisation.[4] This is because it can effectively handle non-Newtonian fluids, such as solid suspensions.[5] In these cases, the diameter of the turbine is usually between a third to half of that of the cylindrical tank.

References

  1. ^ Wankat, Phillip C.; Peppas, Nicholas A. "4". 100 Years of Chemical Engineering at Purdue University, 1911-2011 (PDF). Purdue University: Department of Chemical Engineering. p. 100.
  2. ^ Oldshue, James (1983). Fluid Mixing Technology. New York: McGraw Hill.
  3. ^ NOV. "Chemineer™ BT-6 Gas Dispersion Impeller bulletin". chemineer.com. NOV. Retrieved 2 July 2021.
  4. ^ Doran, Pauline M. (2013-01-01), Doran, Pauline M. (ed.), "Chapter 8 - Mixing", Bioprocess Engineering Principles (Second Edition), London: Academic Press, pp. 255–332, doi:10.1016/b978-0-12-220851-5.00008-3, ISBN 978-0-12-220851-5, retrieved 2025-10-09{{citation}}: CS1 maint: work parameter with ISBN (link)
  5. ^ Chhabra, R. P.; Richardson, J. F. (2008-01-01), Chhabra, R. P.; Richardson, J. F. (eds.), "Chapter 9 - Further Exercises", Non-Newtonian Flow and Applied Rheology (Second Edition), Oxford: Butterworth-Heinemann, pp. 462–499, doi:10.1016/b978-0-7506-8532-0.00009-3, ISBN 978-0-7506-8532-0, retrieved 2025-10-09{{citation}}: CS1 maint: work parameter with ISBN (link)


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