Method and equipment for filtration of suspension

Details Method and equipment for filtration of suspension Method and equipment for filtration of suspension

1989-10-13

1991-09-24

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210107, 210247, 210394, 210396, 210404, 210411, 210791, B01D 3306

Patent

active

050511955

ABSTRACT:
Method and equipment for filtration of a suspension so that the suspension to be filtered is fed from a feed part (4) onto the filter face of a filter member (5), which moves relative the feed part. The pulp layer is formed on the outer face of the filter member and the filtrate flows into the interior of the filter member, and the pulp layer is removed from the filter member at the removing point. After the pulp removing point (17), before the feed point (4), one or several cleaning points (12) are provided wherein liquid is made to flow through the filter member (5) from the inner face of the filter member to the outer face. The flow rate of the liquid that flows through the cleaning point or points is adjusted higher than the rate of any liquid flow that may flow through the rest of the filter member from the inside-face side to the outside-face side.

REFERENCES:
patent: 917305 (1909-04-01), Johnson
patent: 2294179 (1942-08-01), Hawley
patent: 2765085 (1956-10-01), Strindlund
patent: 3876548 (1975-04-01), Welles
patent: 4001119 (1977-01-01), Hunter
patent: 4115271 (1978-09-01), Holt
patent: 4139412 (1979-02-01), Printz
patent: 4443300 (1984-04-01), Bubik et al.
patent: 4844789 (1989-07-01), Lundqvist
patent: 4894121 (1990-01-01), Luthi et al.

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