Gas-solids interactions in the distribution zone of a fluidized bed. Phase I. Special interim report: literature search. [55 references]

Based on a literature search of several abstract journals, a number of conclusions can be drawn about the importance of the gas distribution zone and the effect of distribution on overall fluidized bed performance. The quality of gas distribution has a well documented effect on the physical and chemical parameters of a fluidized bed. The design of gas distributors for fluidized beds is largely empirical. Mass and momentum transfer characteristics of a gas jet in a fluidized bed have been reported. Data on gas-solids movement in the immediate region of gas jet entry are limited to selected determinations of stagnant (nonmoving) zones. More work is needed to delineate the separate zones of nonmoving solids, moving but non-fluidized solids, emulsion phase fluidized solids, bubble phase fluidized solids and gas jet in the vicinity of a gas jet entry to a fluidized bed.