INVESTIGADORES
MAZZA German Delfor
artículos
Título:
The significance of bed collapse experiments in the characterization of fluidized beds of fine powders
Autor/es:
G. F. BARRETO ; G.D. MAZZA; J. G. YATES
Revista:
CHEMICAL ENGINEERING SCIENCE
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 1988 vol. 43 p. 3037 - 3047
ISSN:
0009-2509
Resumen:
Bed collapse experiments are interpreted by a three-phase model of a gas-fluidized bed. Application of the model leads to a relationship between bed voidage in the sedimentation zone of the collapse and the properties of the emulsion and bubble phases of the bed prior to the collapse. Experimental results show that for beds of small particles fluidized under pressure the flow of gas through the emulsion phase is higher than that expected on the basis of existing theories, but it is shown that average rise velocities of bubbles may be obtained from results of bed collapse measurements.
