Abstract
This chapter is concerned with the flow of solids under gravity. Two types of flow will be considered. In one, solids flow downwards in a vertical or inclined tube generally known as a ‘standpipe’. Standpipe flow is often encountered in the outlet of hoppers, in cyclone diplegs and particularly in transferring solids out of a fluidized bed. The other type of gravity flow considered here is analogous to open channel flow of a liquid. This is known as flow in a gravity conveyor or an air-slide. Solids flow down a channel tilted a few degrees to the horizontal (often between 1° and 8°). The solids are fluidized by an upflow of gas close to the minimum fluidization velocity and flow down the channel like a liquid. In this chapter, the two types of gravity flow will be considered separately.
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© 1997 G.E. Klinzing, R.D. Marcus and F. Rizk
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Klinzing, G.E., Marcus, R.D., Rizk, F., Leung, L.S. (1997). Flow in standpipes and gravity conveyors. In: Pneumatic Conveying of Solids. Powder Technology Series, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8981-9_8
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DOI: https://doi.org/10.1007/978-94-015-8981-9_8
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