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US 4,052,794 AGranted
Fluidized bed process
AssigneeStruthers Scientific and International Corporation
InventorNeophytos Ganiaris
Life of this patent
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Abstract
In a fluidized bed dryer or reactor in which particles are coated or aggregated to form granules, all fines separated from the exhaust gas are recycled into feed or into the fluidized bed in solution.
Claims2
The process of providing product granules of a desired size in a fluidized bed dryer from an aqueous feed solution comprising the steps of:
- a. passing heated air upward in a fluidized bed dryer;
- b. spraying an aqueous solution of feed into the dryer forming a fluidized bed therein in which drying particles aggregate and grow into granules to fall from the fluidized bed;
- c. withdrawing aggregated particles from the fluidized bed as a product;
- d. recovering fines blown upward from the fluidized bed;
- e. passing the fines through a water scrubber with a predominently recycled water supply to provide dust in a water solution;
- and
- f. withdrawing dust laden water from the scrubber and adding it to the fluidized bed.
4 more elements
Dependencies are inferred from the claim text.