Flow promoter for fluidized solids
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United States of America Patent
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Sep 1, 1992
Grant Date -
N/A
app pub date -
Mar 1, 1991
filing date -
Mar 1, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for promoting the flow rate of solid particulates from a fluidized bed of solids into a downcomer extending from a discharge outlet in a wall or the bed includes a hollow, funnel-like, horn element having a lower end connected upstream of the discharge outlet and an upper end portion spaced upwardly of the lower end and flared outwardly at progressively higher levels to form an enlarged flow entrance for the fluidized solid particulates to move from said bed toward said discharge outlet into the downcomer. The funnel-like, horn element has an enlarged open upper end formed with a rim around the flow entrance spaced above the lower wall of the bed and has a flow cross-section substantially greater than that of the discharge outlet. A bubble ring is provided adjacent the rim for injecting gaseous fluid into the solids to fluidize the solid particulates for movement in a generally horizontal direction towards a center axis of the flow entrance of the funnel-like, horn element.
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