Method of washing pulp in a pressure pulp washer adding two wash

Details Method of washing pulp in a pressure pulp washer adding two wash Method of washing pulp in a pressure pulp washer adding two wash

1987-11-23

1989-02-28

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With washing

8156, 68 43, 162239, 210402, D21C 902, D21C 906

Patent

active

048082651

ABSTRACT:
A pulp mat is formed on the outside of a permeable, rotatable drum by feeding a pulp slurry through a mat forming and pressing zone, followed by a mat washing zone. In the mat washing zone, the mat is washed with liquid from a first source and then washed with liquid from a second source.
A washing baffle has a first portion extending from its upstream end partially along the outside surface of the drum and slightly spaced from the outside surface of the drum. This first portion is followed by a second portion extending partially along the outside surface of the drum and spaced further from the outside surface of the drum than the first portion.

REFERENCES:
patent: 4085003 (1978-04-01), Luthi
patent: 4292123 (1981-09-01), Lintunen
patent: 4511088 (1985-04-01), Wilt et al.
patent: 4529479 (1985-07-01), Tuoni
patent: 4595456 (1986-06-01), Andersson
patent: 4705600 (1987-11-01), Jacobson

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