Mass Transfer Controlled Reactions In Packed Beds At Low Reynolds Numbers
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Author | : Peter S. Fedkiw |
Publisher | : |
Total Pages | : 524 |
Release | : 1979 |
Genre | : |
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Download Mass Transfer Controlled Reactions in Packed Beds at Low Reynolds Numbers Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1978 |
Genre | : |
ISBN | : |
Download Mass Transfer Controlled Reactions in Packed Beds at Low Reynolds Numbers Book in PDF, Epub and Kindle
The a priori prediction and correlation of mass-transfer rates in transport limited, packed-bed reactors at low Reynolds numbers is examined. The solutions to the governing equations for a flow-through porous electrode reactor indicate that these devices must operate at a low space velocity to suppress a large ohmic potential drop. Packed-bed data for the mass-transfer rate at such low Reynolds numbers were examined and found to be sparse, especially in liquid systems. Prior models to simulate the solid-void structure in a bed are reviewed. Here the bed was envisioned as an array of sinusoidal periodically constricted tubes (PCT). Use of this model has not appeared in the literature. The velocity field in such a tube should be a good approximation to the converging-diverging character of the velocity field in an actual bed. The creeping flow velocity profiles were calculated. These results were used in the convective-diffusion equation to find mass transfer rates at high Peclet number for both deep and shallow beds, for low Peclet numbers in a deep bed. All calculations assumed that the reactant concentration at the tube surface is zero. Mass-transfer data were experimentally taken in a transport controlled, flow-through porous electrode to test the theoretical calculations and to provide data resently unavailable for deeper beds. It was found that the sinusoidal PCT model could not fit the data of this work or that available in the literature. However, all data could be adequately described by a model which incorporates a channelingeffect. The bed was successfully modeled as an array of dual sized straight tubes.
Author | : Harry Hung-Kwan Yip |
Publisher | : |
Total Pages | : 120 |
Release | : 1973 |
Genre | : |
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Download Mass Transfer Coefficient in Packed Bed at Low Reynolds Number Book in PDF, Epub and Kindle
Author | : Raymond Leon Porter |
Publisher | : |
Total Pages | : 320 |
Release | : 1973 |
Genre | : Chemical engineering |
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Download Physical Model for Mass Transfer in a Packed Bed Book in PDF, Epub and Kindle
Author | : Edwin John Wilson |
Publisher | : |
Total Pages | : 160 |
Release | : 1964 |
Genre | : Mass transfer |
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Download Mass Transfer in a Packed Bed of Spherical Benzoic Acid Pellets at Low Reynolds Numbers and Short Bed Lengths Book in PDF, Epub and Kindle
Author | : Edward J. Lynch |
Publisher | : |
Total Pages | : 48 |
Release | : 1959 |
Genre | : Hygrometry |
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Download A New Correlation for Mass Transfer in the Flow of Gases Through Packed Beds and for the Psychrometric Ratio Book in PDF, Epub and Kindle
Author | : John Earnest Frandolig |
Publisher | : |
Total Pages | : 132 |
Release | : 1964 |
Genre | : Mass transfer |
ISBN | : |
Download Liquid-phase Mass Transfer at Low Flow Rates in a Packed Column Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1280 |
Release | : 1980 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Author | : Abbesghol Bakhtiar |
Publisher | : |
Total Pages | : |
Release | : 1958 |
Genre | : |
ISBN | : |
Download Mass transfer at low Reynolds' numbers between gas and solids in a fluidised bed Book in PDF, Epub and Kindle
Author | : Khaliqur Rahman |
Publisher | : |
Total Pages | : |
Release | : 1973 |
Genre | : |
ISBN | : |
Download Mass transfer at low reynolds number in liquid fluidized beds Book in PDF, Epub and Kindle