Method and equipment for pulp bleaching

Details Method and equipment for pulp bleaching Method and equipment for pulp bleaching

D - Textiles, Paper

21

C

8/78, 92/60.1

D21C 9/10 (2006.01) D21C 9/14 (2006.01)

Patent

CA 1204560

ABSTRACT Method and equipment for pulp bleaching at several bleaching stages by utilizing two different bleach chemicals or more. Bleach chemical (E) is in turn led to the pulp so that it displaces of pulp the chemical used at the preceding stage (C/D, D). Displacing chemical (E) is led to the pulp sheet when on the filtering area of a 2- or multi-stage drum washer (1, 2).

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