Imperforate bowl: centrifugal separators – Bowl and means external thereof for recirculating material
Patent
1983-05-18
1988-08-02
Coe, Philip R.
Imperforate bowl: centrifugal separators
Bowl and means external thereof for recirculating material
494 32, 210 961, 210413, B04B 304
Patent
active
047611570
ABSTRACT:
A decanter centrifuge is equipped with a conventional screw conveyor which advances separated solids or heavy phase material toward a solids discharge zone, and it is also equipped with discharge nozzles mounted on the bowl wall for discharging concentrated solids therethrough from the solids discharge zone. In addition to light phase or liquid discharge means, the centrifuge is further provided with a recycle system which returns at least a portion of the discharged solids to the solids discharge zone via a conduit. At the end of the conduit are recycle tubes mounted on the hub of the screw conveyor. The effect of feeding recycled solids to the discharge zone, to which newly separated solids is also being advanced, is to increase the solids concentration of the solids being discharged by the discharge nozzles.
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Coe Philip R.
Pennwalt Corporation
Stinson Frankie L.
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