Method of dispersing a bleaching agent into a stream of fibrous

Details Method of dispersing a bleaching agent into a stream of fibrous Method of dispersing a bleaching agent into a stream of fibrous

1975-01-20

1977-06-21

Corbin, Arthur L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Mechanical defibration in the presence of heated gas or gas...

162 24, 162 68, 162 71, 162 78, 162 83, 241 17, 241 18, 241 28, D21B 112, D21C 910

Patent

active

040309690

ABSTRACT:
A stream of disintegrated fibrous cellulosic pulp material and steam under pressure is subjected to an instantaneous pressure reduction as said stream and steam pass through a throttling nozzle, in a throttling zone, wherein a liquid solution of a bleaching agent is admixed with said stream and which stream, admixed with bleaching agent, is then passed into an expansion zone ahead of the throttling nozzle resulting in a uniform dispersion of the bleaching agent into the fibers in the stream of fibrous cellulosic pulp material.

REFERENCES:
patent: 2422522 (1947-06-01), Beveridge et al.
patent: 2717195 (1955-09-01), Armstrong
patent: 3388037 (1968-06-01), Asplund et al.
patent: 3467574 (1969-09-01), West
patent: 3644170 (1972-02-01), Mekata et al.

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