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A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
A New Approach to Engineering: Career & Research
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A New Approach to Engineering: Career & Research

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An innovative presentation on new engineering technology in research at UCD Dublin. A short review of Bubble Columns of general interest but especially for the casual enthusiast!

An innovative presentation on new engineering technology in research at UCD Dublin. A short review of Bubble Columns of general interest but especially for the casual enthusiast!

Published in: Technology, Business
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Transcript

  • 1. Investigation into Hydrodynamics, Dispersion and Mass-Transfer in a Bubble Column
  • 2. Chemical Engineering Research Presentation
    • Applications in both the Oil & Gas Industry, Bulk Chemical Manufacture as well as Industrial Microbiology
    • Fischer-Tropsch Applied Study
    Study conducted under academic supervision in Dublin, Ireland. Self-Published to Promote Engineering on the Interweb.
  • 3. ii) Scope of Review
    • Hydrodynamics [60]
      • Impingement Plate Study
      • Instrument Noise Characterisation
      • Directionality in Measurements
    • Dispersion [30]
      • Characterisation of Mixing in a Bubble Column
    • Mass-Transfer [10]
      • Study of Mass-Transfer in a Bubble Column
  • 4. 1. Hydrodynamics
    • Study of Fluid Properties/Flow
      • Conservation Laws
      • Newtonian Fluid Behaviour
      • Enhanced Process Understanding
    • Focused upon Measuring Dispersion
      • Standard Inert Test …the black-box approach
    • Optimise & Control Sources of Error
      • Tracer Injection
      • Tracer Measurement Recordings
  • 5. 1.1 Impingement Plate Study
    • Description
    • D.O.E
    • Challenges
      • An efficient Injection Pulse
      • Optimise Radial Dispersion
  • 6. 1.1 Impingement Plate Study
    • Gaussian Plume Modelled
    • Dissipation of Mass/Energy
  • 7. 1.1 Results, Conclusions, Caveats
    • Effects of Critical Variables:
    • Gas Flow Rate Changing Mechanisms of Dispersion
    • Plate Separation Buoyant Effects, Dispersion Ratio
    • Plate Geometry Impingement Characteristics
    • Tracer Concentration Viscosity, Density Effects
    • Plate Size Energy Losses, Liquid Pooling
  • 8. 1.2 Instrument Signal Analysis Comment : Un-Filtered Data
  • 9. 1.2 Noise Characterisation 
  • 10. 1.3 Optimum Conductivity Probe Orientation in Two-Phase Flow Window 1.03 1.60 1.35 0.67 45 1.04 1.65 1.30 1.29 60 0.35 0.22 0.49 0.54 -45 1.41 1.14 0.89 0.29 -60 1.10 1.74 1.06 0.89 0 SE H NE N Position
  • 11. 1.3 Directionality in Readouts
  • 12. 1.3 Window Projection Residence Time Theory Position 3.18 2.25 4.5 2.25 3.18 135 o 1.28 2.75 6 3 4.24 90 o 3.18 2.25 4.5 2.25 3.18 45 o 0.64 1.38 3 1.5 2.12 0 o 135 o 120 o 90 o 60 o 45 o Window
  • 13. 1.3 Results, Conclusions, Caveats
    • Optimum Probe Position and Window Orientation
    • Bubble Column:
      • Variability Consistent
      • Linked with theory
    • Similarity between Columns established
      • Noise analysis
      • Geometrical Scales
    Two parameters characterised RTD could be interpreted with a degree of understanding
  • 14. 2. Dispersion
    • Dispersion helps us to understand the flow behaviour of certain materials
    • It occurs in this study as a fluid-fluid interaction
    • Characterisation of dispersion would allow a rigorous mathematical model to be applied
  • 15. 2. Axial Dispersion Model  /L Time Comment : Notable Similarities to Control Theory
  • 16. 2. Dispersion
  • 17. 2. Dispersion Selected RTD for Pulse Injection Dispersion mechanisms evident – Expected Result ?
  • 18. 3. Mass Transfer
    • Mass Transfer is concerned with the analyses of behaviour on a molecular level
    • Bubble Columns are understood to relate primarily to macroscopic phenomena
    • Measurement of k L a
    • Dissolved Oxygen Measurements
  • 19. 3. Mass Transfer of CO 2 Exponential Model to fit Data, Regression Coefficient of 0.9995
  • 20. 3. Improved Dispersion Model Comment : Agreement of Experimental Data with Predictive Theory
  • 21. Questions ? © Copyright 2007-2010 Please contact me with any comments or suggestions

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