Process and mechanism to empty pulping digester

Details Process and mechanism to empty pulping digester Process and mechanism to empty pulping digester

1989-09-25

1991-10-22

Fisher, Richard V.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Charging and/or discharging fibrous material

162 57, 162246, D21C 708

Patent

active

050592815

ABSTRACT:
A batch process and mechanism for cooking fibrous paper pulb including a digester wherein the pulp is cooked under elevated temperatures and pressures for a predetermined time, a discharge line leading from the lower end of the digester to a blow tank, a valve in the discharge line and cycling means connected to the valve cyclically opening and closing the valve while the contents are emptied from the digester.

REFERENCES:
patent: 953076 (1910-03-01), Waite
patent: 1947888 (1934-02-01), Thorne
patent: 3741864 (1973-06-01), Pennington
patent: 4039373 (1977-08-01), Michelsen
patent: 4284120 (1981-08-01), Gloersen

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