Apparatus for withdrawing a particulate solid from a packed, non-fluidized bed
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United States of America Patent
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Dec 14, 1993
Issued Date -
N/A
app pub date -
Dec 11, 1991
filing date -
Jun 12, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for withdrawing particulate spent catalyst particles from a packed, non-fluidized bed of such particles in contact with a liquid medium within a vessel wherein the apparatus is a withdrawal conduit or pipe which has an inlet that opens within the bottom of the bed and faces generally downwardly so that a first section extends upwardly from the inlet, and a second section extends downwardly, and the spent catalyst particles exits the packed bed through a uniform and continuous flow path opening into a solids recovery vessel whose pressure is controlled to regulate flow of such spent catalyst from the reaction vessel independent of the rate of flow through the withdrawal conduit.
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