Apparatus to displace a digester from both ends

Details Apparatus to displace a digester from both ends Apparatus to displace a digester from both ends

1989-10-30

1991-10-22

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

Digester

162241, 162242, 162248, 162249, D21C 700, D21C 708, D21C 712

Patent

active

050592840

ABSTRACT:
An apparatus and method for use in a batch digesting process to quantitatively displace fluids in the digester by pumping into the digester under pressure a first volume of displacing fluid at the upper end and a second volume of displacing fluid at the lower end of the digester. Displaced fluids are collected and removed from the digester near the midline between the top and the bottom of the digester.

REFERENCES:
patent: 2179796 (1939-11-01), Morterud
patent: 2614923 (1947-02-01), Tarkkonen
patent: 3881986 (1975-05-01), Backlund
patent: 4248662 (1981-02-01), Wallick
patent: 4578149 (1986-03-01), Fagerlund
patent: 4690731 (1987-09-01), Hartler et al.
Abstract Bulletin of the Institute of Paper Chemistry, vol. 53, No. 8, Feb. 1983, p. 978.

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