| EPSRC Reference: |
GR/J07761/01 |
| Title: |
FLOW PATTERNS IN FAST-FLUIDISED BEDS |
| Principal Investigator: |
Davidson, Professor J |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Chemical Engineering and Biotechnology |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1993 |
Ends: |
30 September 1996 |
Value (£): |
136,703
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Summary on Grant Application Form |
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The objective is to understand the flow of gas-solid mixtures through pipe bends and other geometries, eg a sudden contraction in a pipe or a gradual enlargement in a pipe (diffuser). Such geometries are used for circulating fluidised beds.The flow pattern would be studied for bends or other connectors conveying the gas-solids mixture from the riser to the cyclone of a fast-fluidised bed. Important measurements would be (a) the effect of geometry on the percentage of particles recyled from the connector to the riser, (b) the resulting effect on riser pressure drop. For the simpler riser-to-cyclone connectors, eg a sudden contraction, theoretical analysis is envisaged to predict the percentage recycle of solids: this theory would be useful for the design of large units, for which no procedure is currently available.The behaviour of a diffuser (gradual enlargement) in the vertical riser would be studied by experiment, (a) without a particle film falling on the riser wall, (b) with a falling particle film: these alternative flow regimes can be formed by mounting the diffuser in the riser (a) at the top or (b) lower down. With no falling film, a pressure recovery is expected. Theory would be developed to predict the gas and particle streamlines with no wall film, a well-posed theoretical problem.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cam.ac.uk |