Process of delignification and bleaching lignocellulose pulp

Details Process of delignification and bleaching lignocellulose pulp Process of delignification and bleaching lignocellulose pulp

D - Textiles, Paper

21

C

9/31, 8/78

D21C 3/18 (2006.01) D21C 9/10 (2006.01) D21C 9/12 (2006.01)

Patent

CA 1040809

ABSTRACT OF THE DISCLOSURE The delignification and bleaching of lignocellulosic products is effected by treatment by means of chlorine-containing and/or oxygen- containing substances. The pulp is mixed with a pair of chlorine-containing and/or oxygen-containing substances, simultaneously or sequentially, and they, by reaction in situ, give rise to gases in the nascent state. The chlorine and/or oxygen are in the so-called "singlet" state, or in a state of higher energy. The duration of the treatment is some minutes, at a temperature below 100°, preferably of the order of 20° to 60°.

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