Method for continuous treatment of fiber material in a vertical

Details Method for continuous treatment of fiber material in a vertical Method for continuous treatment of fiber material in a vertical

1975-07-02

1977-06-07

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Continuous chemical treatment or continuous charging or...

162237, 162241, 162246, 232905, D21C 326, D21C 324

Patent

active

040281710

ABSTRACT:
A method for continuous treatment of fiber material in a digestor or the like that allows substantial segregation of the digestor treatment zones so as to prevent upflow of liquid from a bottom zone to an upper zone. An area of reduced cross-sectional area is provided between each treatment zone which increases the velocity of flow of fiber material and entrained liquid in that area, and substantially prevents upward movement of liquid therepast.

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patent: 3619348 (1971-11-01), Asplund
patent: 3660225 (1972-05-01), Verieyne
patent: 3811994 (1974-05-01), Ostberg

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