Gas-Flow Patterns in Fluidized Beds


A FLUIDIZED bed is sometimes used as a means of carrying out a chemical reaction between a gas and solid particles. In gas-fluidized beds, ‘bubbles’ form and there is considerable interest in the part played by these in gas/solids in contact. It has been suggested, for example, that some of the gas rises through the bed in the form of bubbles and effectively bypasses the solid particles2. Several investigators1–7 have made various indirect measurements and have concluded that back-mixing of the gas occurs. These processes are important in estimating reaction-rates. So far as we are aware, no one has hitherto observed directly gas-flow patterns within the bed.

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  1. 1

    Zenz, F. A., Petrol. Refiner, 36, 321 (1957).

    CAS  Google Scholar 

  2. 2

    Zenz, F. A., and Othmer, D. F., and Othmer, D. F., “Fluidisation and Fluid Particle Systems”, 278 (Reinhold, 1960).

    Google Scholar 

  3. 3

    Lanneau, K. P., Trans. Inst. Chem. Eng., 38, 125 (1960).

    CAS  Google Scholar 

  4. 4

    Leva, M., “Fluidisation”, 282 (McGraw-Hill, 1959).

    Google Scholar 

  5. 5

    Gilliland, E. R., and Mason, E. A., Indust. Eng. Chem., 41, 191 (1949); 44, 218 (1952).

    Article  Google Scholar 

  6. 6

    Askins, J. W., Hinds, G. P., and Kunreuther, F., Chem. Eng. Prog., 47, 401 (1951).

    CAS  Google Scholar 

  7. 7

    Handlos, A. E., Kunstman, R. W., and Schissler, D. D., Indust. Eng. Chem., 49, 25 (1957).

    CAS  Article  Google Scholar 

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ROWE, P., WACE, P. Gas-Flow Patterns in Fluidized Beds. Nature 188, 737–738 (1960).

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