Gas--solids interactions in the distribution zone of a fluidized bed. Phase I. Quarterly report, September 15--December 15, 1976. [2 refs]

The distribution zone of a 60 micron solids fluidized bed was probed with a newly-developed miniature, self-heating thermistor probe to define the gas jet, moving but non-fluidized solids, moving solids, emulsion, and bubble regimes. Data from probings at a gas entry velocity of 100 fps and superficial velocities of 1 and 2 fps and a gas entry velocity of 200 fps and a superficial velocity of 2 fps were used to generate three-dimensional interfaces for the several solids regimes. The effects of entrance velocity, superficial velocity, and type of air entry on location and magnitude of the several regimes are shown.