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US 4,546,552 AGranted
Fluid induced transverse flow magnetically stabilized fluidized bed
AssigneeExxon Research & Engineering Co.
InventorsRobert P. Cahn, Jeffrey H. Siegell
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AssigneeExxon Research & Engineering Co.
InventorsRobert P. Cahn, Jeffrey H. Siegell
Estimating the term…
Solids comprising a magnetically stabilized fluidized bed are transported in a direction transverse to the flow of the fluidizing fluid exiting the bed by contacting at least a portion of said solids with fluidizing fluid which enters the bed with a velocity component in the direction of solids flow; i.e. the transverse flow direction. In a preferred embodiment, the fluidizing fluid entering the bed is passed through a distribution means containing propulsion passages slanted in the desired direction of solids flow which serve to orient the fluidizing fluid in the transverse flow direction. Use of this invention eliminates the need for the costly and inconvenient pneumatic, hydraulic and mechanical transport devices employed in the prior art. Solids attrition and elutriation are also reduced.
In a process for effecting fluid-solids contacting under fluidization conditions wherein a bed comprising fluidized magnetizable particles is contacted in a vessel with a fluidizing fluid which passes into the lower portion of said bed and exits from the upper surface of the bed, said bed being stabilized by a magnetic means having a strength sufficient to suppress solids backmixing, the improvement which comprises transporting at least a portion of said particles in a direction transverse to the flow of the fluidizing fluid exiting said bed by contacting said particles with at least a portion of the fluidizing fluid entering into said bed, said entering fluidizing fluid having a component of velocity in said transverse direction caused by passage through a distribution means.
A process for circulating a bed comprising fluidized magnetizable particles within a contacting zone while maintaining an essentially fixed inventory of said particles within said zone, said bed being fluidized by a fluidizing fluid that enters the lower portion of said bed and exits from the upper surface thereof, said bed being stabilized by a magnetic means having a strength sufficient to suppress particle backmixing therein, which comprises:
Dependencies are inferred from the claim text.