Method for counter-current treatment of cellulose fiber material

Details Method for counter-current treatment of cellulose fiber material Method for counter-current treatment of cellulose fiber material

1976-07-20

1977-11-01

Bascomb, Jr., Wilbur L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Continuous chemical treatment or continuous charging or...

162 52, 162237, 210 70, D21C 324

Patent

active

040564290

ABSTRACT:
In counter-current treatment of cellulosic fiber material it is known to have strainers for separation of liquid from the fiber material. In this invention strainers are omitted by introducing pretreated sinking fiber material through an inverted funnel into a liquid filled tank passing treatment liquid counter-currently to the fiber material and extract liquid from a liquid room above the surface of the fiber material and above the open lower end of said funnel. The tank may be operated at atmospheric or at higher pressures to suit the conditions.

REFERENCES:
patent: 1283364 (1918-10-01), Trent
patent: 2781301 (1957-02-01), Payne
patent: 2904506 (1959-09-01), Penick
patent: 3567573 (1971-03-01), Case
patent: 3814664 (1974-06-01), Carlsmith

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