Process distributing fluffed pulp into a static bed reactor for

Details Process distributing fluffed pulp into a static bed reactor for Process distributing fluffed pulp into a static bed reactor for

1995-10-27

1998-06-30

Alvo, Steven

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Chemical treatment after start or completion of mechanical...

162 52, 162 63, 162 65, 162246, D21C 706

Patent

active

057728445

ABSTRACT:
A process and apparatus for treating and particularly bleaching pulp contacts a pulp with a gaseous reaction medium in a reactor tower. The pulp is fluffed and refined before being added to the pulp bed and then homogeneously permeated with the gaseous reaction medium to produce a uniformly treated pulp. A distribution device is included in the reactor to uniformly distribute the pulp in the reactor and form a homogenous pulp bed having a substantially even upper surface and uniform bed depth.

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Perkins et al, "Advances in Ozone Bleaching--Paper III", pp. 263-266.
"Importance of Reactor Design in High Consistency Ozone Bleaching", White et al, 79th Annual Meeting Canadian Pulp and Paper Assoc., Jan. 28, 1993.

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