Paper making and fiber liberation – Apparatus – Slurry supply conditioning or condition maintaining
Patent
1992-02-26
1993-12-07
Jones, W. Gary
Paper making and fiber liberation
Apparatus
Slurry supply conditioning or condition maintaining
162139, 96197, B01D 1900
Patent
active
052680770
ABSTRACT:
The stock stream of a pre-cleaned paper stock suspension is sub-divided into extremely small partial jets in a chamber of a compartment. Each such partial jet or stream has a throughflow volume of approximately 50 liters/min. to 80 liters/min. and is directed with great turbulence against an impact wall within the closed chamber of the compartment at jet velocities in the order of about 10 m/sec. to 12 m/sec. and at an absolute pressure of about 0.5 to 0.8 bar absolute, the partial jets then being completely sprayed at such impact wall. The paper stock suspension which is to be deaerated has as large as possible surface area, so that the air is efficiently released at a negative pressure or vacuum of approximately 0.05 bar prevailing in the chamber and then can be suctionally removed. The division of the stream of the paper stock suspension into partial jets is accomplished by a distributor through which extends a predetermined number of throughflow openings defined by bores. The throughflow openings each have, for example, the shape of a stepped constricting or widening diffusor. Turbulence-generators can increase the action of the stepped diffusors.
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Bubik Alfred
Gmeiner Anton
Stein Walter
Jones W. Gary
Lamb Brenda
Sulzer Esher Wyss GmbH
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