Varying annular fluidization zone for increased mixing efficienc

Details Varying annular fluidization zone for increased mixing efficienc Varying annular fluidization zone for increased mixing efficienc

1993-09-01

1995-01-03

Scherbel, David A.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With agitation or forced circulation

162243, 366171, 366172, 366305, 366307, D21C 322, B01F 504

Patent

active

053783212

ABSTRACT:
Medium consistency (e.g. about 5-18%) paper pulp is mixed with a treatment fluid by fluidizing them while subjecting them to a constantly changing shear field in radial and axial planes. This is accomplished by providing a mixer rotor having a constantly varying cross-section along a dimension of elongation. The rotor may comprise a body having an external surface simulating alternately oriented cone frustums along its axis of rotation, with vanes connected to the external surface and including portions following the surface contour. A disk may or may not be provided at the end of the body connected to a shaft. A first interior housing portion has a configuration mimicking that of the rotor, while a second housing portion defines a fluidization zone with the disk.

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International Technical Disclosures, ITD 1:9, vol. 1, No. 9, Jul. 25, 1983.

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