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Related Experiment Videos

Performance of a shaking vessel with current pole.

Y Kato1, S Hiraoka, Y Tada

  • 1Department of Applied Chemistry, Nagoya Institute of Technology, Gokisocho, Showaku, 466-8555, Nagoya, Japan

Biochemical Engineering Journal
|February 15, 2001
PubMed
Summary

A central "current pole" enhances solid particle suspension in liquids within shaking vessels. This innovation improves particle dispersion and reduces mixing time without increasing power consumption, optimizing vessel performance.

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Area of Science:

  • Chemical Engineering
  • Fluid Dynamics
  • Particle Technology

Background:

  • Achieving uniform solid particle suspension in liquids is crucial for many industrial processes.
  • Shaking vessels are commonly used, but often suffer from poor particle dispersion and dead zones.

Purpose of the Study:

  • To investigate the efficacy of a central pole, termed the "current pole", in improving solid particle suspension in a shaking vessel.
  • To evaluate the impact of the current pole on particle dispersion, power consumption, mixing time, and mass transfer.

Main Methods:

  • Experimental analysis of a shaking vessel equipped with a central current pole.
  • Measurements included particle dispersion, power input, mixing duration, and solid-liquid mass transfer coefficients.
  • Varied pole diameters were tested to determine optimal dimensions.

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Main Results:

  • The current pole significantly improved particle suspension and dispersion.
  • It reduced the critical circulating frequency required for complete suspension.
  • Mixing time was decreased, particularly by eliminating stagnation points on the vessel bottom.
  • Optimal pole diameter was found to be approximately 5% of the vessel diameter.

Conclusions:

  • The central current pole is an effective modification for enhancing solid particle suspension in shaking vessels.
  • It offers improved performance in terms of dispersion and mixing efficiency without additional power costs.
  • The design provides a simple yet effective solution for optimizing suspension processes.