Multiphase pulp washer

Details Multiphase pulp washer Multiphase pulp washer

1990-06-13

1991-09-10

Stinson, Frankie L.

Textiles: fluid treating apparatus

Machines

Combined operations

68158, 68181R, D21C 102

Patent

active

050463381

ABSTRACT:
Multiphase washing of pulp is accomplished on a fully pressurized drum filter by employing compaction baffles to increase the consistency of the pulp mat and by providing a separate pump for each wash zone so that there is no pressure difference between the wash zones and, thus, no need for any mat contacting mechanical seal. This avoids mat disruptions and machine clogging often caused by pulp pile-up at such seals. Feed pulp of relatively high consistency is made possible by incorporation of a deflocculator and distributor in the pulp feed nozzle.

REFERENCES:
patent: 4213822 (1980-07-01), Eriksson
patent: 4266413 (1981-05-01), Yli-Vakkuri
patent: 4292123 (1981-09-01), Lintunen et al.
patent: 4769986 (1988-09-01), Kokkonen et al.
patent: 4827741 (1989-05-01), Luthi
patent: 4894121 (1990-01-01), Lutni et al.
patent: 4952314 (1990-08-01), Henricson et al.

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