Method for alkaline delignification of lignocellulosic fibrous m

Details Method for alkaline delignification of lignocellulosic fibrous m Method for alkaline delignification of lignocellulosic fibrous m

1986-02-12

1989-02-21

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Continuous chemical treatment or continuous charging or...

162 37, 162 39, 162 60, 162 65, 162 89, 162 90, D21C 326, D21C 912, D21C 9147, D21C 918

Patent

active

048062030

ABSTRACT:
A process is disclosed for the pretreatment of lignocellulosic fibrous materials prior to delingification. The process in one of its embodiments is comprised of the following steps:

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patent: 3652388 (1972-03-01), Croon et al.
patent: 3874992 (1975-04-01), Liebergott
patent: 4046621 (1977-09-01), Sexton
patent: 4160693 (1979-07-01), Lindahl et al.
patent: 4259150 (1981-03-01), Prough
patent: 4298427 (1981-11-01), Bentuclzene et al.
patent: 4444621 (1984-04-01), Lindahl
patent: 4568420 (1986-02-01), Nunni
Perkins, "Equipment for Rapid Press-Caustic Extraction" Tappi Alkaline Pulping Conference, Oct. 1975; Williamsburg, Va.

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